When choosing the best solar heating system for your swimming pool, you need to think about your local climate, the length of your swim season, the size of your pool, and the cost to purchase and install a solar heating system.

With these things in mind, our pick for the best solar heater for above ground pools is the SunHeater S220 Solar Pool Heater. It’s built with the ability to connect multiple panels together, letting you customize how powerful you need your solar heater.

For smaller, pre-mounted options, we recommend either the  GAME 72000-BB SolarPRO or the very affordable Goplus Solar Dome.

Remember that solar heaters require plenty of sunny days to have enough energy to heat your pool. That’s why they’re best suited for areas with lots of sunshine and where winters are mild.

So if you’re in a colder climate with a limited swim season, or if you want to heat your water faster, you’ll need an electric pool heater or gas pool heater. They can heat more water in less time compared to solar.

Want to build your own solar heater? We have a step-by-step walkthrough on How To Build a DIY Solar Pool Heater for Less Than $100.

If you still want help deciding on the best heater to buy for your pool, here’s our complete guide to above ground pool solar pool heaters and how to pick the right one.

FYI: We’re a small team of pool industry experts and researchers that care about recommending quality, reliable pool products. If you do choose to click a link and buy any of the products we recommend, we earn a commission at no additional cost to you.

Best Solar Pool Heater: SunHeater S220

SunHeater S220 Solar Heating System for Above Ground Pools

Sunheater's Solar Pool Heating System is an efficient and cost-effective method to heat your above ground pool. This heater uses your existing filtration system and comes with the necessary fittings for easy installation.

As your pool’s pump pushes water through the panel’s tubes, it’s warmed by the sun and then returned to your pool. This system can raise the water temperature up to 15°F and extend your pool season by weeks.

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The SunHeater S220 Solar Heating System maximizes solar collection with its flat-panel style tubing. Since this solar heater uses your existing pool pump, it should be installed near your pool. And while its versatility gives you plenty of options and is easy to set up, it does not come mounted on anything. That means you’ll need space to lay it flat, like on a rooftop or deck.

A single installation kit comes with one panel that measures 2’ x 20’ (40 sq. ft.). So it’s perfect for heating above ground pools that are 24’ round pools or 15’ x 30’ oval pools. But keep in mind that additional units will be necessary to heat larger pools.

Best Smaller Solar Pool Heater: GAME 72000-BB SolarPRO

Our Top Pick

GAME 72000-BB SolarPRO Curve Solar Above Ground Pool Heater

The SolarPRO Curve Solar Pool Heater is an affordable way to increase your pool temperature steadily using the sun. For an 8,000-gallon above ground pool, expect your water to increase by 5 degrees in 4 days.

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The SolarPRO is a great option for those with smaller pools and limited space. Since it’s a curved solar pool heater, it allows it to maximize heat collection throughout the day. It also keeps the solar unit from killing your grass. And the adjustable legs make it compatible with multiple manufacturers, such as Intex and Bestway.

An 8,000-gallon pool can expect an increase of five degrees over several days. If you have a larger pool or need more heating power, it’s possible to add more solar panels to the system. But this might not be the most effective solution. And purchasing multiple units also means you’ll need bypass kits.

By the way, if you need more help taking care of your above ground pool, be sure to check out our Pool Care Video Course!

Frustrated by adding chemicals and trying to keep your pool clear all the time?

We cut out all the confusion of pool maintenance in this easy-to-read illustrated ebook and video course. It'll help you save $100 right away on pool care!

Click Here to Learn More

Best Budget Solar Heater: Goplus Solar Dome

Goplus Solar Dome Pool Heater

This affordable, space-saving solar dome will help you extend your swimming season and heat your pool to a warm, comfortable temperature. It's best for smaller pools, but multiple units can be connected to heat more water.

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As one of the cheaper options out there, the Goplus Solar Dome is a cost-effective way to heat a small pool. The dome style provides a compact size while maximizing the energy collection surface. And at only 11 pounds per unit, it’s easy to fit multiple units together if you want more power.

Each dome features rotatable hose connectors and foldable support legs. So it’s easy to adjust toward the sun and convenient to store. But because the hoses are only 38.5’’ long, you’ll need to install the system near the pool itself. And it won’t work for rooftop installation.

A single unit can heat a 6,000-gallon pool by 5 to 10 degrees. But with additional kits required for larger pools.

How Do Solar Pool Heaters Work?

Solar pool heaters work by directing your pool water through a series of valves to reach your solar collectors, which are solar panels. Water enters the collectors and is heated by solar energy. The heated water returns to the pool. The cycle repeats itself until the pool reaches your desired temperature.

Even though solar heaters are made from several types of materials, polymer systems are most common for above ground pools.

Polymer Solar Heating Systems

Polymer systems can be made out of PVC, polypropylene, rubber, plastic, and more. You can find them in mat and coil configurations, these are the most common options for above-ground pools. Many are affordably priced and offer an easy installation process. And they can usually be mounted on the ground close to the pool or on a rooftop or deck.

However, these models aren’t suitable for areas where below-freezing temperatures are common and require seasonal draining. This can damage the solar heater material.

Flat vs. Mounted Solar Heaters

With polymer systems, you’ll find either flat-lying or pre-mounted options. With a mounted model, like a dome, the system comes already tilted towards the sun and off the ground. This makes setup extremely easy. Also, dome configurations are also better for tight spaces where you don’t have the space to lie down a full mat. However, flat-lying options can collect more sunlight and can be mounted on sunny spots like a rooftop.

How To Choose The Best Solar Pool Heater

There are several considerations to keep in mind, including your access to sunlight and how much space you have around your pool.

Local Climate and Pool Season

The warmer your outdoor air is, the less your pool heater will have to work. That also means you can get by with a smaller pool heater. If you have a small pool or a short swimming season, solar heating panels are an eco-friendly way to heat your pool.

But if you’re in a cooler climate, a solar pool heater, even with multiple panels, may not be enough to help you achieve a comfortable water temperature. Solar heaters can only increase the temp by about 12 degrees, max.

Pool Size

The larger your pool, the more solar panels you’ll need to achieve the correct temperature. If you’re in a naturally cooler climate, it may not be possible to achieve it with solar alone.

It’s not just the size of your pool that matters – it’s also the size of the panels, and whether you have an open pool, screened pool, or shaded pool. For roof installations, you also have to account for the size of each panel.

For the basic solar domes and solar mats, one unit will heat a 6,000 to 8,000-gallon pool. Read manufacturer’s descriptions carefully, as the bypass kits you need to connect multiple units may need to be purchased separately.

Pool Heater Location

With solar pool heating systems, you could have a solar dome or mat on the ground next to the pool. Or you could have it raised off the ground nearby. Many kits allow for roof or rack installation. If you do a rack installation, you’ll need an area large enough to hold all the panels that also gets the necessary sun exposure.

Installation Requirements

Solar heaters are the easiest for DIY installations, but they still require planning, and the installation itself is time-consuming. With the right tools and adequate space on your property, you can take care of it.

Winterization

You must completely remove your solar heater from your pool to winterize it safely. This means turning off your circulating system and allowing the solar collectors and pipes to drain. Check all connectors, bypass valves, etc. Store the components in a dry place. If you’re planning on keeping everything in the basement or garage, it’s a good idea to keep it all in a box to protect the system from rodents.

If you run a year-round swimming season, shut the panels down if a hard freeze is expected.

Maintenance

The biggest part of maintaining your solar pool heater involves taking care of your pool and filtration system. Keep the filter clean and the chemicals balanced to ensure proper water flow goes to the collectors.

Frequently Asked Questions About Solar Pool Heaters

Need more help picking out the right solar heater? Here are some commonly asked questions and answers.

What size solar pool heater do I need to heat my above ground pool?

Choosing the right solar pool heater size depends on the solar panel’s surface area and the size of your pool. You’ll need enough solar paneling or tubing to equal 50% of your pool’s surface area. For example, if your pool’s surface area is 600 square feet, you’ll need 300 square feet of solar panels or tubing to heat it. Smaller above ground swimming pools of up to 8,000 gallons can get by with one unit. Larger pools require additional units with bypass kits. You’ll also need to consider local landscape features and how much sunlight you get.

Is solar pool heating worth it?

Solar heating is a cost-effective way to gradually boost your pool’s water temperature. In warmer climates where there are plenty of sunny days, it’s an energy-efficient way to keep your pool warm. But if you’re in a cooler climate, solar heating isn’t as effective as gas or electric pool heaters. To maximize solar pool heat, use a solar pool cover. This will help prevent evaporation and heat loss, especially at night.

How much warmer does solar heating make a pool?

Compared to an unheated pool, a solar pool water heater is on average, 8 to 12 degrees warmer. But that can be over the course of several days of heating. And your pool will still lose heat on cloudy days and overnight. Using a solar cover helps to reduce heat loss, but won’t completely prevent it.

How can I heat my above-ground pool fast?

If you need to warm your above-ground pool quickly, it’s most effective to use a gas pool heater or an electric heat pump. Pool solar panels are designed to heat the water gradually, over a period of several days. Gas and electric models can heat a larger volume of water over a period of hours.

Need More Pool Maintenance Help?

• Download our free Pool Care Cheat Sheet. It’s a free, easy-to-use guide to help you keep track of taking care of your pool.
• Subscribe to our Swim University YouTube Channel. We publish free video tutorials throughout the pool season.
• Check out our Pool Care Course. You’ll get 30+ step-by-step videos and a downloadable guide with everything you need to know about pool maintenance.

The post Best Solar Heaters for Above Ground Pools of 2023 appeared first on Swim University®.

With those criteria in mind, our picks for the best above ground pool heater are:

• Raypak Electronic Ignition Natural Gas Pool Heater
• Hayward HeatPro Heat Pump
• GAME 72000-BB SolarPRO Solar Heater

Natural gas heaters and heat pumps are more powerful but the units cost several thousands of dollars. On the other hand, passive solar heaters like the SolarPro only cost a few hundred but are far less effective at heating your water.

For more information about how these heaters work and what features to look for, keep reading for our complete guide to the best above ground swimming pool heaters.

FYI: We’re a small team of pool industry experts and researchers that care about recommending quality, reliable pool products. If you do choose to click a link and buy any of the products we recommend, we earn a commission at no additional cost to you.

How Do You Choose the Best Above Ground Pool Heater?

If you live in a colder climate or need to heat a larger pool quickly, we recommend the Raypak Natural Gas Heater. Gas heaters can heat your water up by 30 degrees in some cases. You will, however, pay for that power with the cost of the heater itself and a higher utility bill.

For the most energy-efficient option that doesn’t sacrifice power, consider the Hayward Electric Pool Heat Pump. It works well in mild climates, utilizing ambient heat from the air to help you save you money on your electric bill. Keep in mind that even though the heat pump is more energy-efficient, it may not work well in extremely cold temperatures.

But if you live somewhere with plenty of sunlight and don’t mind waiting for your pool to heat up, the SolarPRO Solar Heater is an extremely affordable option (a few hundred dollars) and very energy-efficient. It will just take several days to heat up your pool water and only by a few degrees.

Finally, if you’re specifically looking for a propane gas option and don’t mind sacrificing some power to save money, we recommend the Pentair MasterTemp 125.

The Best Above Ground Gas Pool Heater: Raypak Natural Gas Heater

Our Top Pick

Raypak Natural Gas Pool and Spa Heater

The Raypak gas heater is a high-efficiency pool heater with a small footprint. This heater includes a digital control panel (LCD) for temperature selection and heater settings.

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The Raypak Digital Electronic Ignition Natural Gas Pool Heater is the most powerful above-ground pool heater option. It uses an electronic ignition that will automatically start the system when the pool’s temperature falls below your preset preferred temperature. Featuring an LCD display, you can easily see and set the temperature on the thermostat at any time. And gas-powered heat means heating your pool water quickly in any climate.

The Raypak heater is available in several models, from 206,000 BTUs to 399,000 BTUs, to accommodate different size pools. However, it does require access to a natural gas line. That means not only is this heater a significant upfront cost, but the installation can also be pricey.

The Best Above Ground Electric Heater: Hayward HeatPro Heat Pump

Our Top Pick

Hayward W3HP50HA2 HeatPro Heat Pump, Beige

This easy-to-install heat pump uses less energy than natural gas and propane heaters. The Hayward HeatPro 50K BTU Heat Pump will quickly and energy-efficiently heat smaller above ground pools.

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The Hayward HeatPro heat pump is an energy-efficient option for pools up to 13,000 gallons, 24 feet round, and 15 x 30 feet oval pools. It features a high-efficiency titanium heat exchanger and a cooling mode to cool water temperature if needed.

This heat pump runs quietly with a defrost system that allows it to start in lower temperatures. It’s also a “Low Nox” heater, which means it minimizes levels of nitrogen-oxide, making it more environmentally friendly.

A heat pump like the Hayward HeatPro will help you heat your pool quickly and efficiently. Though it’s not as powerful as a gas heater and still costs several thousands of dollars, it’s a bit easier to install (though it may still require an outside contractor).

The Best Above Ground Solar Pool Heater: GAME 72000-BB SolarPRO

Our Top Pick

GAME 72000-BB SolarPRO Curve Solar Above Ground Pool Heater

The SolarPRO Curve Solar Pool Heater is an affordable way to increase your pool temperature steadily using the sun. For an 8,000-gallon above ground pool, expect your water to increase by 5 degrees in 4 days.

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An extremely affordable heater option, the GAME 72000-BB SolarPro has a unique curved shape to help maximize heat collection. Plus, because it doesn’t lie flat on the ground, this solar collector won’t kill your grass. It features threaded ports for plumbing options and adjustable legs, making it compatible with a variety of manufacturers, including Intex and Bestway above ground pools.

However, a solar heater will heat your water much slower than a gas or electric heat pump. If you have an 8,000-gallon pool, you can expect an increase of five degrees in four days. So if you need more heating power or have a larger pool, you’ll need multiple solar heaters. And that means you’ll need to purchase bypass kits to connect each one.

The Best Alternative Above Ground Pool Heater: Pentair MasterTemp 125

Available as a propane or a natural gas solution, the Pentair MasterTemp 125 is a slightly more affordable on-demand heater option. If you have a smaller pool (up to 17,500 gallons), this heater may be a perfect size. At only 80 pounds, its compact design makes it easy to fit in smaller spaces where other heaters just won’t go. And its rotating digital display lets you easily see your current pool water temperature.

By the way, if you need more help taking care of your pool, be sure to check out our pool maintenance video course.

Frustrated by adding chemicals and trying to keep your pool clear all the time?

We cut out all the confusion of pool maintenance in this easy-to-read illustrated ebook and video course. It'll help you save $100 right away on pool care!

Click Here to Learn More

How Do Different Types of Pool Heaters Work?

Pool heaters are available in three types: gas, electric, and solar. And each has pros and cons, including price, energy efficiency, and the ability to heat your water quickly.

Gas Pool Heaters

Gas pool heaters use either natural gas or propane gas to heat your pool. Pool water passes through the heater while a combustion chamber burns the gas. Then the heated water passes back into your pool.

If you’re in a cooler climate or you need to heat your pool quickly, a gas pool heater is most effective. Gas heaters can produce more heat in shorter periods of time. But compared to other heaters, they’re more expensive to operate. Propane or natural gas tends to cost more than the electricity used for a heat pump.

If you want to use natural gas, you’ll need a gas line near your pool. But if you don’t already have one, you’ll also need to pay for not only the heater installation but a gas line as well.

Electric Pool Heaters and Pool Heat Pumps

There are two types of electric pool heaters: a direct flow heater and a pool heat pump. The direct flow heater works much the same way as a tankless water heater, heating the water on demand as it passes through. And it requires electricity to generate heat.

On the other hand, a pool heat pump uses the warmth from the ambient, outside air to warm up your pool water. It’s the same way your home’s air conditioning system works but in reverse.

Direct flow electric heaters can be expensive to operate, hiking up your electricity bill in the pool season. But a pool heat pump is much more energy-efficient and costs much less to run. However, they won’t work well in colder temperatures since they rely on warmer, outside air to work.

Solar Pool Heaters

Powered by the sun’s heat, solar pool heaters come in a wide range of options. The simplest solar heaters use black coils to harness the sun’s rays to warm up your water. After exiting your filter pump, your pool water passes through the heated black tubing or solar dome before it’s transferred back into your pool.

More complex solar setups require solar panel installation and permanent plumbing fixtures. But the simplest solar heaters are easy to install, energy-efficient, and affordable. On-the-ground solar heaters with black tubing, however, take the longest to heat up your water.

For this type of above ground pool heater to work, you need lots of sunny, warm days to heat up your water. But if you do live in a hotter climate, a solar pool heater is the least expensive and most energy-efficient option.

Keep in mind that solar blankets and solar covers aren’t meant to directly heat your poo. These solar options stop evaporation and keep heat and water from dissipating, especially at night. But they don’t necessarily actively heat your pool. So solar blankets are a great compliment to a pool heater system but not a substitute.

How to Choose the Best Heater for Your Pool

Location

Where your pool heater goes may not seem all that important, but, you may need to use things from your yard or home to install it. A gas pool heater typically sits next to the pool or a nearby shed so it can connect to your pool’s water filter and pump system. They’re bigger than their electric equivalents, but require a lot less room compared to a solar heater. However, some do require access to a natural gas line.

An electric heater can be 50% smaller than the gas version. They are generally installed next to the pool or with the filter and pump. And they obviously need access to electricity.

Finally, a solar pool heater will take up more space and require more planning before you install them. Some will sit near the pool, while some can go on the decking or fencing. And you will need access to direct sunlight. So it’s crucial to measure and plan the layout to make sure there’s adequate space available.

Ease of Installation

If you’re planning for a DIY installation, passive solar pool heaters are the easiest option. They require no extra electric or gas hookups.

If you are looking to have an electric pool heater installed, you may be able to install this yourself. But even if you successfully connect the piping for the flow of the water, it’s always better to have an electrician connect the system and confirm that everything is working properly since the electrical equipment is around water.

A natural gas pool heating system is the most difficult to set up because it often requires both gas and electrical connections. As with an electric heater, it’s better to hire a professional to make sure the gas connections are secure before you start to use the pool heater. You may also need a natural gas line installed if you don’t have one.

Pool Size

The larger your pool volume, the harder your pool water heater will have to work. Because of this, it’s rare to use a passive solar pool heater if you have a huge pool. But if you do want to use solar energy to heat your swimming pool, you can add additional panels to keep the water warm. If you have a very large pool, opt for a gas or electric heater.

Note: Pool heaters use British Thermal Units (BTUs) to indicate heat potential. A single BTU increases the temperature of 1 lb of water by 1 degree, a heater with a higher BTU will heat your water faster. Be sure to check the heater’s BTU or pool size capacity before buying.

In-Season Water Temperature

Climate is a major factor in deciding on the best pool heater for your pool. In warmer climates, nearly any pool heater will work. It’s also likely that you won’t need a heater that’s as powerful to keep your pool at the right temperature.

For warmer areas, an electric heat pump or a solar pool heater is an effective choice because they pull heat from the outdoor air or natural sunlight. In cooler climates, you’ll likely require the power of the gas pool heater.

Heater Casing

Both electric and gas pool heaters have casings to protect the equipment from water, fluctuation in temperature, impact damages, and more. The casing is also insulated to keep the water flowing through it warm before it flows back into the pool.

If you opt for a solar heating system, you won’t have to think about the casing. This type of pool heater is designed to spread out so that it can absorb the maximum amount of solar energy. But the black tubing can corrode over time due to pool chemicals.

Winterizing

If you need to winterize your pool, you’ll need to prepare your filtration system, heater, pump, and other components for the cold temperatures. This keeps your hoses, filters, brackets, and all other internal components safe from freezing temperatures, and ensures they remain in good working order from season to season.

Solar heaters have to be completely removed to winterize them safely. Similarly, electric and gas heaters should be winterized by removing the hoses and power sources, removing water, and securely storing the parts in a dry location for the winter.

Maintenance

As with other parts of your pool, your heater requires regular maintenance. This includes cleaning it, repairing it, and, depending on climate, winterizing. Passive solar options rarely need an inspection. But if you have an electric or gas heater, consider scheduling an annual professional maintenance inspection to make sure works correctly.

If you’re concerned about regular maintenance and repair, purchase a pool heater than has a longer warranty period, making it possible to get service, parts, or a new unit if needed.

Frequently Asked Questions About Above Ground Pool Heaters

Looking for more help picking out the best pool heater? Here are some common questions and answers.

What’s the best way to heat an above ground pool?

The fastest way to heat an above ground pool is with a gas pool heater. They can raise your water temperature by up to 30 degrees. But the most cost-efficient, effective method is a heat pump. Just keep in mind that pool heat pumps are less effective in dramatically colder temperatures.

Solar pool heaters are the cheapest and most energy-efficient option. But it will take several days to increase your water temperature with a solar pool heater.

How much does it cost to heat an above ground pool?

It can cost anywhere from $0 per month (solar heater) to $800 a month (propane gas heater) to heat your pool. It depends on the type of energy you’re using. Propane tends to be more expensive than natural gas. And direct flow electric heaters use more power than heat pumps. According to PoolResearch.com, a heat pump costs up to $200/month to heat a pool compared to a direct flow electric heater which costs $600/month.

Can you install an inground pool heater on an above ground pool?

Not all pool heaters are designed to work with above ground pools. But there are many models that are built for both inground pools and above ground pools. Just keep in mind that gas heaters can raise your water temperature by 30 degrees or more. So some models may be too powerful for a smaller, above ground pool.

What is the cheapest way to heat an above ground pool?

The cheapest way to heat a pool is with a solar heater setup. This involves running your pool water through heated, black tubing that’s naturally warmed by the sun. You can make these yourself or purchase them online. Just keep in mind that things like solar pool covers or solar rings only help retain heat, not add heat to your pool. If you’ve already got a pool heater and you want to reduce your power or gas bill, use these methods to help hold in as much heat as possible.

What size heater do I need for my above ground swimming pool?

The size of pool heater you need depends on the volume (or cubic square feet) of your pool and the length of your swimming season. Smaller pools that hold up to 13,000 gallons can get by with a 50,000 BTU heater. Larger pools that hold up to 21,000 gallons need at least 85,000 BTU. Bottom line, the larger your pool, the more BTUs you’ll need to warm the water efficiently.

Need More Pool Maintenance Help?

• Download our free Pool Care Cheat Sheet. It’s a free, easy-to-use guide to help you keep track of taking care of your pool.
• Subscribe to our Swim University YouTube Channel. We publish free video tutorials throughout the pool season.
• Check out our Pool Care Course. You’ll get 30+ step-by-step videos and a downloadable guide with everything you need to know about pool maintenance.

The post The Best Above Ground Pool Heater of 2023 appeared first on Swim University®.

Keeping these criteria in mind, our two picks for the best natural gas and propane gas pool heaters are:

• Raypak Digital Electronic Ignition Pool Heater (Natural Gas)
• Hayward Universal H-Series (Propane Pool Heater)

For smaller or above ground pools, we recommend the Pentair MasterTemp 125 Pool Heater

The type of heater you choose depends on the type of gas you have available. Natural gas pool heaters require a gas line for installation. If lines aren’t available on your property, you’ll either need to pay to have them installed, or opt for a propane pool heater. And keep in mind that propane heaters tend to be more expensive to run than natural gas.

Curious about how gas pool heaters work and the features you should look for? Keep reading for our complete guide to the best natural gas and propane pool heaters.

FYI: We’re a small team of pool industry experts and researchers that care about recommending quality, reliable pool products. If you do choose to click a link and buy any of the products we recommend, we earn a commission at no additional cost to you.

Best Natural Gas Pool Heater: Raypak Digital Electronic Ignition

Our Top Pick

Raypak Natural Gas Pool and Spa Heater

The Raypak gas heater is a high-efficiency pool heater with a small footprint. This heater includes a digital control panel (LCD) for temperature selection and heater settings.

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This natural gas heater from Raypak uses an electronic ignition system that keeps your water consistently warm. It will automatically start whenever it finds the pool’s water temperature has fallen below your preset levels. And the LCD screen ensures that you can easily set and monitor temperature at any time.

Ranging from 206,000 BTU to 399,000 BTU, this heater works with both above ground and inground pools. However, if you have a small above ground pool, you may find even the smallest BTU has too much power.

Best Propane Pool Heater: Hayward Universal H-Series

Our Top Pick

Hayward Universal H-Series Pool and Spa Heater (Propane)

This heater is super reliable and protects against corrosion and premature failure caused by unbalanced water chemistry. Its design also reduces your pump run time to provide energy savings.

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If you need a propane heater, the Hayward Universal H-Series is a great option. With units available from 150,000 BTU to 400,000 BTU, you’ll be able to find the option that works best for your pool size and climate. Best of all, it’s a low NOx model, so it’s environmentally friendly and meets standards for areas where low NOx units are required.

Unfortunately, this particular model is designed only for inground pools. Pool owners with smaller or above ground pools should consider the Pentair MasterTemp 125.

Best Budget Propane Gas Pool Heater: Pentair MasterTemp 125

Pentair MasterTemp 125 Compact Energy Efficient Propane Gas Heater

This gas heater provides an option for either propane or natural gas. Its compact size is perfect for heating smaller pools.

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The Pentair MasterTemp 125 is not only perfectly sized for smaller or above ground pools, but it also costs half as much as other heaters. Its compact design is powerful enough to heat pools up to 15,000 gallons and is best suited for above ground pools. It’s also low noX certified, which means low emissions.

With user-friendly indicator lights, the Pentair MasterTemp 125 is simple to operate and monitor. And its corrosion and UV-resistant housing make it a durable, long-lasting heater.

By the way, if you need more help taking care of your pool, be sure to check out our pool maintenance video course. 

Frustrated by adding chemicals and trying to keep your pool clear all the time?

We cut out all the confusion of pool maintenance in this easy-to-read illustrated ebook and video course. It'll help you save $100 right away on pool care!

Click Here to Learn More

How Do Gas Pool Heaters Work?

You’ll find some gas heaters that run on natural gas and some that run on propane gas. Fundamentally, the two work the same way.
As your pool’s pump circulates water, water comes out of the pool, through a filter, and into the heater. The gas (fuel) burns in the combustion chamber to generate heat to warm up the water, and then sends it back out into the pool.

Gas heaters warm up your pool faster than electric pool heaters (pool heat pumps) or solar pool heaters. They’re also the most effective option for pool heating when temperatures are colder.

Natural Gas vs. Propane Pool Heaters: Which One is Better?

Natural gas and propane pool heaters work the same way. The difference lies in the fuel they use. Both fuels are colorless and odorless. And both are clean-burning fossil fuels, but that’s not all that matters.

Natural gas comes to your property via gas lines, so it may not be available in your local area. And propane is delivered via large tanks. With a natural gas line, you’ll never have to worry about running out of fuel. But propane is more energy-dense than natural gas, so you get more energy from it than you would the same amount of natural gas.

That said, natural gas is much cheaper than propane. In fact, you could save thousands each year using natural gas. It costs an average of $2,500 to $10,200 a year ($200 to $850/month) to run a propane pool heater (depending on location, pool size, and swim season). Natural gas, on the other hand, costs an average of $1,400 to $4,800 per year (about $100 to $400 a month).

If the cost of natural gas is 40% of the cost of propane in your area, then natural gas is the cheaper option for heating your pool water.

The cost to purchase the heaters will be about the same. And installation costs are similar as well. But it really comes down to your access to natural gas and the cost of fuel in your local area.

How To Choose The Best Gas Pool Heater

Pool Size

The bigger your pool, the more BTUs you’ll need to heat it. Smaller pools, up to 13,000 gallons can generally get by with lower BTU models (as low as 50,000 BTU). If you’ve got a larger pool, with 18,000 gallons or more, you’ll need more power.

Climate and Pool Temperature

If you live in a warmer area, you can get by with a smaller unit, since your heater won’t have to work as hard to heat water to your desired temperature. But if you live in a colder climate or you want a year-round swimming season, you’ll need a larger unit to account for the seasonal changes in outdoor air temperature.

Where Your Pool Heater is Located

Your gas heater will generally sit next to the pool, or in a nearby shed. The heater must be placed where it can connect to the pool pump and water filtration system. That means you’ll need plenty of room and the ability to connect it to your gas line, propane tank, and electricity.

Installation Requirements

If you were hoping for a DIY pool heater installation, we’re sorry to say that gas heaters are the most difficult to install. Why? They need both gas and electrical connections. So it’s best to hire a pool professional to install it for you.

The installation costs vary depending on where you live and whether or not you need to alter any of your existing pool plumbing or groundwork to install it.

Heat Conservation

Your heater will be insulated with either plastic or foam to keep as much heat in the water as it flows through the system. The better insulated your heater is, the better it can maintain a warm water temperature with less effort. When your system doesn’t have to work as hard, it will last longer, and you save energy. If you really want to save energy, use a pool cover to hold in the heat while the pool’s not in use.

Heater Casing

The heater casing is a special material designed to protect your equipment from water, temperature fluctuations, impact damage, etc. Aesthetically, they’re also designed to blend in with your surroundings so they don’t ruin your decor.

Winterization

No matter what type of pool heater you buy, you’ll need to winterize it. Winterizing your equipment prepares your pool and all of its components, including the heater, for the colder part of the year. To winterize a gas pool heater, you’ll need to disconnect all the hoses and power sources. Then remove all the water with a shop vac and store all the components in a dry location.

Maintenance

Just like you have to maintain the right water chemistry in your pool, you’ll also need to regularly maintain your pool heater. Doing so ensures it’s in good working order for years and extends its lifespan.

And if you don’t maintain the chemicals in your pool, especially your pH, you can wear out your gas pool heat exchanger.

Have your gas heater professionally inspected every six months if you operate a year-round swimming season, and once a year if you don’t.

If you’re worried about regular maintenance and repair costs, choose a pool water heater that features an extended warranty. This will make it easier to cover service and parts, or a replacement unit, should the need arise.

Frequently Asked Questions About Gas Pool Heaters

Need more help picking out the best pool heater? Here are some common questions and answers.

Is a gas pool heater worth it?

Gas pool heaters are more effective at heating your water compared to electric or solar heaters. It’s the most efficient way to heat pools in colder areas and the best way to extend your pool season. But if you live in a warmer climate or you want to spend less money on running your heater, a gas heater may not be the best option.

Are gas pool heaters expensive to run?

The operating costs to run a gas heater will depend on the cost of gas in your area and how much you run it. And keep in mind that natural gas costs less than propane. It costs an average of $200 to $850 per month to run a propane pool heater vs. $100 to $400 per month for a gas heater.

How much does a gas pool heater cost?

A gas heater will cost you an average of $2,000 to $3,000, depending on its size, BTUs, and the manufacturer. While they do cost more initially than other types of pool heaters, they’re the best option for heating pools quickly and keeping water warm in cooler climates.

How long does it take to heat a pool with natural gas?

The amount of time it takes to heat your pool depends on your pool size, the BTUs of your pool heater, and your desired temperature. Use this formula to get an estimate: Gallons of water x Weight per gallon (8.33 lbs) x Degrees of temperature increase / BTU output of the heater.

For example, here’s the amount of time it takes to raise the temperature in a 15,000 gallon pool by 10 degrees with a 100,000 BTU heater:

• 15,000 x 8.33 = 124,950
• 124,950 x 10 degrees = 1,249,500 BTUs needed to heat the water 10 degrees
• 1,249,500 / 100,000 (BTU output) = 12.495 hours

What is the cost to heat a pool with propane vs. natural gas?

Expect to spend anywhere from $200-$850 a month with a propane pool heater or $100-$400 a month with natural gas. Propane may be more energy-dense and require less fuel than natural gas, but propane is usually more expensive than natural gas.

If the cost of natural gas is 40% of the cost of propane in your area, then natural gas is the cheaper way to heat your pool.

What size pool heater should I get?

To figure out the right pool heater for your needs, you’ll need to know your pool’s volume (you can use our pool volume calculator). Then reference the pool heater’s guidelines regarding BTUs and pool size. It’s always a good idea to go higher, particularly with a gas heater. A bigger BTU unit helps to warm up your pool faster and compensate for the loss.

How long does a gas heater last?

Your gas pool heater should last an average of 10 years. Regular maintenance will extend its overall lifespan, so pool owners should factor that into ongoing costs. If you go extended periods without using it, always have it inspected and conduct any necessary maintenance and repair before starting it up again.

Need More Pool Maintenance Help?

• Download our free Pool Care Cheat Sheet. It’s a free, easy-to-use guide to help you keep track of taking care of your pool.
• Subscribe to our Swim University YouTube Channel. We publish free video tutorials throughout the pool season.
• Check out our Pool Care Course. You’ll get 30+ step-by-step videos and a downloadable guide with everything you need to know about pool maintenance.

The post Best Gas Pool Heaters of 2023 (Propane and Natural Gas) appeared first on Swim University®.

With those considerations in mind, tour top picks for the best inground pool heater are:

• Hayward Universal H-Series (Natural Gas or Propane)
• Hayward HeatPro Heat Pump (Electric Pump)
• SmartPool S601 Pool Solar Heaters

For pool owners with smaller pools who want a cheaper option, we recommend the Pentair MasterTemp 125.

If you live in a colder climate, skip the solar pool heater and opt for the heat pump or gas pool heater. A gas pool heater will heat your water faster and work better in colder temperatures. But the heat pump is more energy-efficient and you’ll spend less money running it.

For those in sunnier climates who don’t mind waiting a day or two for the water to heat up, a solar heater is a good option. Depending on the size of your pool, you may need to install multiple panels to reach your ideal temperature.

Want to learn more about the features you should look for in an inground pool heater? Keep reading to see our complete guide on the best inground swimming pool heaters.

FYI: We’re a small team of pool industry experts and researchers that care about recommending quality, reliable pool products. If you choose to click a link and buy any of the products we recommend, we earn a commission at no additional cost to you.

How Do You Choose the Best Inground Pool Heater?

If you live in a colder climate or need to heat a larger pool quickly, we recommend the Hayward Universal H-Series Gas Heater (it comes in either propane or natural gas). Gas heaters are extremely powerful and can heat your water up by 20 or 30 degrees. However, it will cost you over time, since gas is the most expensive utility to use to heat your pool.

For a more energy-efficient option that’s still powerful, consider the Hayward HeatPro Heat Pump. It utilizes ambient heat from the outside air, helping you save money on your utility bill. But even though this heat pump is more energy-efficient, it may not work as well in extremely cold temperatures as a gas heater.

Finally, if you live somewhere sunny and you don’t mind waiting a few days for your pool water to heat up, the SmartPool S601 Pool Solar Heaters is both very affordable and extremely energy-efficient. But unlike a heat pump or gas heater, it can take several days for your water temperature to rise.

Finally, if you have a smaller pool and you want a more affordable option, we recommend the Pentair MasterTemp 125. It’s a few thousand dollars less than the Hayward Heat Pump and Natural Gas Heater but it runs on propane and only works in pools up to 15,000 gallons.

Best Inground Gas Pool Heater: Hayward Universal H-Series

Our Top Pick

Hayward Universal H-Series Pool and Spa Heater (Natural Gas)

This heater is super reliable and long-lasting. The cupro nickel heat exchanger protects against corrosion caused by unbalanced water chemistry. And it provides major energy savings with low NOx emissions to meet air quality standards.

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The Hayward Universal H-Series Gas Heater comes as either a natural gas or propane pool heater. It’s available in a variety of sizes, ranging from 150,000 BTU to 400,000 BTU. And it’s an environmentally-friendly option for those in locations where low-NOx emissions are required. Keep in mind that you’ll likely have to pay to install it: professional installation is recommended to ensure plumbing and gas lines are handled correctly.

With a properly sized heater for your pool, you can expect the temperature to increase by one to two degrees an hour. A 40,000 BTU heater will warm a 33,000-gallon pool from 77 to 86 degrees in eight hours. Once it arrives at the set temperature, it will kick on a few times a day to maintain it.

Looking for another natural gas option? We recommend the Raypak Natural Gas Pool Heater.

Best Inground Electric Pool Heater: Hayward HeatPro Heat Pump

Our Top Pick

Hayward W3HP50HA2 HeatPro Heat Pump, Beige

This easy-to-install heat pump uses less energy than natural gas and propane heaters. The Hayward HeatPro 50K BTU Heat Pump will quickly and energy-efficiently heat smaller above ground pools.

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The Hayward HeatPro is a compact electric pool heater designed to heat your pool efficiently without taking up a ton of room. The titanium heat exchanger and “ultra gold” evaporator coil are chemically corrosion resistant. This makes it a great choice for coastal environments and saltwater pools. The lightweight design (coming in at less than 250 pounds) also makes it easier to transport.

But the best feature? Unlike other heat pumps, the Hayward HeatPro will even work when the outside air temperature is lower.

The HeatPro is fairly complex to install and is best left to professionals. You’ll need at least six feet of clearance above the heat pump at installation. And it’ll also take several hours to heat the water if you have a larger pool of over 25,000 gallons.

Best Inground Solar Pool Heater: SmartPool S601 Pool Solar Heaters

Our Top Pick

Smartpool Solar Pool Heating System

This solar pool heater features 80 square feet of solar panels that'll raise pool water temperature 6-10°F (4-6°C).

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If you’re looking for a solar heating system, the SmartPool S601 Pool Solar Heater System is a very affordable option. Designed for DIY installation, this solar heater system will raise your pool water by 6 to 10°F over several days.

Keep in mind that you will need space in the sun for this heater since it measures 4 feet by 20 feet. And it does not come with an installation kit, so you’ll need to purchase that separately.

For this particular setup, it’s recommended you have enough solar panels equal to at least 50% of your pool’s surface area square footage. If your pool’s surface is 500 square feet, you’ll need 250 square feet of solar panels for 50% coverage.

Best Budget Pick Inground Pool Heater: Pentair MasterTemp 125

Pentair MasterTemp 125 Compact Energy Efficient Propane Gas Heater

This gas heater provides an option for either propane or natural gas. Its compact size is perfect for heating smaller pools.

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The Pentair MasterTemp 125 is an affordable, propane gas option for smaller pools (up to 15,000 gallons). At only 80 pounds, this compact pool heater ensures it can fit in tight spaces where other heaters aren’t an option. It also features a rotating digital display so you can always see the current water temperature.

Because it has less power than the other options, the Pentair MasterTemp 125 won’t be enough to keep your pool at an adequate temperature if you have more than 15,000 gallons.

By the way, if you need more help taking care of your pool, be sure to check out our pool maintenance video course.

Frustrated by adding chemicals and trying to keep your pool clear all the time?

We cut out all the confusion of pool maintenance in this easy-to-read illustrated ebook and video course. It'll help you save $100 right away on pool care!

Click Here to Learn More

How Do Different Types of Inground Pool Heaters Work?

Inground pool heaters are available in three types: gas, electric, and solar. And each one has its advantages and disadvantages, including energy efficiency and price.

Gas Pool Heaters

Gas pool heaters are a good choice for those who have an easily accessible gas line near their pool. In colder climates, gas pool heaters are the most popular option because of how effective they are. Though they will cost more to purchase and run than their electric or solar counterparts, they will produce more heat in a shorter period.

Electric Pool Heaters and Pool Heat Pumps

When it comes to electric pool heaters, you have two types to choose from: a direct flow water heater or a heat pump. Heat pumps use the ambient air to heat the water and are one of the most energy-efficient, powerful heating options on the market.

An electric heat pump pool heater works just like an air conditioning unit but in reverse. It pulls the air in, heats the water, and pushes the warm water out of the pool heat pump. Because it’s so energy-efficient, a heat pump is one of the best electric options for heating your pool.

Solar Pool Heaters

Solar pool heaters use the sun’s warmth to warm up the water. The most effective systems use a series of panels attached to the roof of your home or a rack near the pool.

For solar heaters to work effectively, you must live in a warmer climate with a lot of sunny days to heat the water. If you’re in a hot climate, solar is an energy-efficient way to heat your swimming pool. If you’re in a cooler climate, solar panels aren’t effective.

Keep in mind that solar blankets, solar rings, and liquid solar covers only help reduce evaporation and heat loss. They aren’t very effective at heating up the water on their own.

How to Choose the Best Pool Heater for Your Pool

Your Climate and Swim Season

The local climate and the length of your swim season influence the type and size of the pool heater you need. For a warmer climate, any type of pool heater will work. You could also purchase a smaller unit since the heater doesn’t have to work as hard to maintain your ideal pool temperature.

If, however, you want a year-round swimming season, even in a warmer climate, you may need a more powerful heater like a gas heater.

Pool Size

If you have a small pool, you can purchase a heater with fewer BTUs. A heater’s heating power is measured in British thermal units (BTUs.) And 1 BTU is the amount of energy it takes to warm one pound of water by one degree Fahrenheit.

The larger your pool, the more BTUs you’ll need to heat the pool water to a comfortable temperature. And the longer you want to extend your swim season, the more BTUs you’ll need as well. In general, a 50K BTU works well for pools up to 13,000 gallons.

While it’s not as common to see solar heaters with large pools, you can install multiple solar panels to increase the heating capacity and keep your water at the ideal temperature. However, if you’ve got a large pool with more than 18,000 gallons, choose either an electric or a gas heater.

Location of the Pool Heater

Depending on the type and size of your pool heater, you may need a lot of space.

Gas heaters generally sit next to the pool or in equipment housing that’s close by. This is because they need to connect your pool’s pump and water filter system. They’re also much larger than electric heaters, but require less room overall than a solar heater.

Electric heaters can be up to half the size of a gas heater. They’re also installed next to the pool or with the pump and water filter.

Finally, solar heaters take up the most room and need planning before installation. Some can be placed near the pool, but others may go on the roof or the deck. Measuring beforehand to make sure you have enough available space is key.

Installation Requirements

If you’re planning on installing the pool heater yourself, some options are more difficult than others.

Gas heaters are the most difficult to install because they typically require both electrical and gas connections. It’s best to hire a professional installer.

If you’re planning on an electric heater, it’s best to hire a professional for that as well. You can connect the piping for water flow, but an electrician should connect the system to ensure everything is working properly because electrical equipment is in such proximity to water.

Solar heaters are generally the easiest for DIY installations but will take more time. As long as you have the right tools and the necessary space on your property, you might be able to install this option yourself.

Heater Casing

Unless you’re dealing with a solar heater, you will have casings around the heating equipment to protect it from water, impact damage, changes in temperature, and more. The casing is insulated to ensure the water stays warm as it flows through before going back into the pool.

If you’re worried about aesthetics, the heater casing is designed to blend in with your decor rather than stick out.

With solar heaters, you don’t have to worry about casing because it is designed to spread out so that the panels can absorb more of the sun’s energy.

Heat Conservation

Pool heaters are insulated with plastic or foam to direct the heat they produce into the water as it flows through. Better insulated heaters will be able to maintain a warm water temperature without working as hard. This results in less energy consumption.

Winterization

Winterizing is a process that prepares your pool and all of its parts for cooler temperatures associated with the winter season. It keeps filters, brackets, hoses, and other components safe from the temperatures and ensures that they work well for you from one swim season to the next.

If you have a solar heater, it can be more challenging to winterize panels located on your roof. It’s a bit more straightforward to winterize an electric or gas heater. Simply disconnect the hoses and power sources, remove the water, and securely store all components in a dry location. To ensure the heater is completely dry, you can use a wet vac or a leaf blower before you put it in storage.

Maintenance

Your pool heater will require regular maintenance to insert that it runs optimally. This means taking the time to clean it and repair it when necessary. Depending on the climate you’re in, you may also need to winterize it every year.

Regardless of the kind of pool heater you purchase, plan on having it professionally inspected once a year and if you use your pool all year, have it checked twice a year.

If regular maintenance and repair is a major concern, opt for a pool heater that features a longer warranty period. And in general, heat pumps tend to last longer than gas pumps or solar heater systems.

Frequently Asked Questions About Inground Pool Heaters

Looking for more help picking out the best pool heater? Here are some common questions and answers.

How much is a heater for an inground pool?

Plan on spending several thousand dollars on a gas pool heater or pool heat pump. The pricing depends on the BTUs of the unit – with more BTUs required to heat larger pools or smaller pools to warmer temperatures. Solar heater systems are much more affordable but they are far less effective at heating your water.

What is the best way to heat an inground pool?

The best pool heater for your pool depends on how quickly you need to heat your water, the outside air temperature, and how much you’re willing to spend on the ongoing cost to run your heater. In colder climates, you’ll want either a gas or an electric pool heater, as those have more power to heat the water to hotter temperatures and more quickly. A gas heater will usually cost you more to run than an electric heater. On the other hand, for those in warm climates, using a solar heater can increase your pool water’s temperature without any ongoing costs. But it may only increase by a few degrees and over a longer period of time.

How many BTUs do I need to heat my inground pool?

If you have a smaller pool (up to 13,000 gallons), a 50,000 BTU pool heater is enough to heat your water. However, if you want to have a longer swim season in the colder months, you may need a BTU output of up to 65,000.

But if you have a larger pool, up to 21,000 gallons, you’ll need a larger heater around 85,000 BTUs. Most heaters provide calculations on their websites.

Can you add a heater to an existing inground pool?

Yes, you can add a pool heater to an existing inground pool. The type and size you should add depend on your climate, your swim season, your budget, and how much space you have to install it. While it’s more difficult to install than with an above ground pool, it is possible. It may just require a professional.

Need More Pool Maintenance Help?

• Download our free Pool Care Cheat Sheet. It’s a free, easy-to-use guide to help you keep track of taking care of your pool.
• Subscribe to our Swim University YouTube Channel. We publish free video tutorials throughout the pool season.
• Check out our Pool Care Course. You’ll get 30+ step-by-step videos and a step-by-step downloadable guide with everything you need to know about pool maintenance.

The post The Best Inground Pool Heater of 2023 appeared first on Swim University®.

1. Solar Pool Heaters.
2. Gas Hool Heaters (propane and natural gas).
3. Pool Heat pumps.

The key to choosing the right one is knowing how they work, finding the right size for your pool, the pros and cons of each. Plus, how much money you’ll spend or save.

What is The Best Swimming Pool Heater?

The best pool heater is the one you own. But if you don’t have one yet, we’ve put together a list of some of our favorite pool heaters to help you find the perfect one for your backyard water playground.

Note: These pool heaters are available to buy on either Amazon and InTheSwim.com. Check both sites for availability. All the links are affiliate links which means if you click a link and make a purchase, we earn a commission at no additional cost to you. It helps us keep the lights on

The Best Propane Pool Heater

Our Top Pick

Hayward Universal H-Series Pool and Spa Heater (Natural Gas)

This heater is super reliable and long-lasting. The cupro nickel heat exchanger protects against corrosion caused by unbalanced water chemistry. And it provides major energy savings with low NOx emissions to meet air quality standards.

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Providing 400,000 BTUs of heating power, this Hayward pool heater can heat just about any pool of any size. The system is designed for very low emissions and energy-efficient running so while your gas bills may go up, they’ll still be lower compared to other heating systems.

This gas heater has a standard cupronickel heat exchanger for superior efficiency. Its patented polymer header and bypass valve are designed for hydraulic reliability. It’s environmentally responsible low NOx emissions meet or exceed air quality emission standards in all Low NOx regions.

The Best Natural Gas Pool Heater

Our Top Pick

Raypak Natural Gas Pool and Spa Heater

The Raypak gas heater is a high-efficiency pool heater with a small footprint. This heater includes a digital control panel (LCD) for temperature selection and heater settings.

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Its compact size makes it ideal for both inground and above ground pools. The Raypak features a digital thermostat dial.

A soft opening gas valve makes lighting the pilot easy and safe, and the system delivers reliable and fast heat. The thick-walled copper heat exchanger is corrosion resistant and features a built-in bypass valve that balances the flow and adjusts for a wide range of pump sizes and flow rates. It comes with a one-year warranty.

The Best Electric Pool Heat Pump

Our Top Pick

Hayward HeatPro Titanium Heat Pump

$4,699.00

A super quiet acoustic compressor cover and profiled fan blade which is also efficient performance. And the titanium heat exchanger is designed for maximum heat transfer, efficiency, and reliability.

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01/27/2023 09:27 pm GMT

Designed for maximum heat transfer, efficiency, and reliability, this Hayward electric heat pump puts out 140,000 BTU for reliable, even heating. It incorporates titanium counter-flow heat exchangers for optimal performance, even in harsh conditions. It also has heavy-duty, super-quiet scroll compressors and stainless steel hardware.

Its injection-molded, UV-resistant body panels are impervious to rust and deterioration. The evaporator fin is corrosion resistant as well. The round design makes it fit easily through gats, and it takes up less space on an equipment pad.

Note: If you live in a climate where the fall and winters drop below temperatures of 60º F (15.5º C), electric heat pumps start to lose their effectiveness. So if you’re looking to extend your pool swimming season into colder weather, I suggest investing in a gas pool heater.

The Best Solar Pool Heater

Our Top Pick

Smartpool Solar Pool Heating System

This solar pool heater features 80 square feet of solar panels that'll raise pool water temperature 6-10°F (4-6°C).

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With just 80 square feet of solar panels, this pool heater system can be mounted on a roof. The polypropylene heat collector raises pool water temperature by 6°F to 10°F (4°C to 6°C). This energy-efficient system requires an installation kit, which is sold separately.

Real quick, if you need even more help with taking care of your pool, we offer a full video course teaching you everything you need to know about pool maintenance. 

Frustrated by adding chemicals and trying to keep your pool clear all the time?

We cut out all the confusion of pool maintenance in this easy-to-read illustrated ebook and video course. It'll help you save $100 right away on pool care!

Click Here to Learn More

What Are BTUs: Pool Heater Thermal Units?

BTU, which stands for British thermal unit, is how pool heaters are sized. One BTU (sometimes also written as Btu) is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

Pool heater outputs range from 75,000 BTU to 450,000 BTU. The amount of heat generated often depends on the type of pool heater you have.

Solar Pool Heaters

Solar pool heaters work by pumping the water from your swimming pool to your filter, and partially diverting it through solar collectors that warm the water before it goes back into the pool.

Types of Solar Pool Heaters

• Unglazed collectors are heavy-duty rubber or plastic panels with an ultraviolet (UV) light inhibitor.
• Glazed collectors are made with copper tubing on an aluminum plate with an iron-tempered glass covering.

Glazed collectors are more expensive, but also more durable than unglazed collectors. Both include freeze protection to protect against colder weather areas.

How Much Does a Solar Pool Heater Cost?

It usually costs between $3,000 and $4,000 to buy and install a solar pool heating system.

How to Find The Right Size Solar Pool Heater

The surface area of your solar collector should equal around 75% of your yard, more if you keep your pool open year-round—up to 100%. You can preserve yard space if your home’s roof is large enough to accommodate the appropriate number of collectors.

For example, if you have a 16′ x 32′ inground swimming pool in the southern United States, you would need a 100% equal surface area. So multiply 16′ by 32′ to get the square footage of 512. This means you’ll need 512 square feet of solar collectors.

But if the same size pool is located in the northern United States, which only has the pool open for 6 months out of the year (if you’re lucky), then you’d only need about 75% of the surface area, equaling 384 square feet of solar collectors.

You’ll also need the right size pool pump for a solar heating system. If you’re replacing your current heater with a solar system, you may need a larger pump or a separate pump to help push the water through the solar collectors.

Solar Pool Heater Pros

• Great for heating a pool in warm climates.
• Eco-Friendly and energy efficient
• Energy savings pay for the installation
• Uses a free source of energy; inexpensive to operate
• Lasts about 15 to 20 years

Solar Pool Heater Cons

• You need to have a lot of direct sunlight; otherwise, you’ll need a backup gas heater or heat pump
• Costs a lot up front; repayment can take years
• Only works when the sun is out and it heats the water very slowly
• Takes up a lot of room in your backyard and doesn’t look all that attractive

Gas Swimming Pool Heaters

Fairly inexpensive to operate, a gas pool heater uses natural gas or propane. Water passes through while a combustion chamber burns and warms the water before returning to the pool. In other words, the water passes through a burning hot tube, then back to your pool.

Gas heaters are also efficient and will get the job done quickly. If you live up north where temperatures are cooler, you can heat the pool up quickly, and then use a solar cover to maintain the heat to cut down on operating costs.

Natural Gas or Liquid Propane Pool Heaters?

The type of fuel you use will depend on the availability and the price of fuel in your area. The good news is both types of heaters usually cost about the same.

If your home has natural gas, you can also use it to heat your pool. If you don’t, you’ll have to buy a large, ugly propane tank and install in your backyard, which will need to be filled up regularly.

On the other hand, propane is usually 2.5 times more expensive than natural gas, depending on supply and demand.

Millivolt or Electronic Ignition Pool Heaters?

Millivolt means you have a small amount of gas that keeps a pilot light lit so that it’s always available to fire up while an electronic ignition lights the burners with a spark, just like a gas grill.

We recommend going with an electric ignition so you use less fuel and don’t risk a gas leak.

Low NOx vs. Normal Emissions Pool Heaters

A “Low NOx” gas heater is designed to release low emissions, which also makes them more efficient than regular pool heaters. This also means your pool will heat more quickly.

If that wasn’t enough of a sell for Low NOx, they also meet the NOx Emission standards set by the California South Coast Quality Air Management Commission for 2001 and the Texas Natural Resource Conservation Commission Code. So if you live in those two states, you’ll need a Low NOx heater anyway.

Other Gas Pool Heater Features

• Dual vs Single Thermostat – Most heaters have dual thermostats for both a pool and a spa. However, smaller heaters will only have one.
• Wind Resistant – Look for heaters that have either a forced draft system or a wind-resistant design. This eliminates all outside weather variables that can affect the heating of your pool.

How Much Does a Gas Pool Heater Cost?

On average, the cost to run a natural gas heater is $300-$600 per month, and possibly even more for a propane heater.

New inground pool gas heaters can cost between $1,500 and $3,500, depending on the size, type, and brand.

How to Find The Right Size Gas Pool Heater

Just like any pool heater, you need to first know the surface area of your pool in square feet. You’ll also need to figure out the average air temperature in your area.

1. Decide what you roughly want your pool water temperature to be and what the average temperature outside will be during the coldest month.
2. Subtract the average temperature for the coldest month from the temperature you want your water to be to figure out the temperature rise needed.
3. Calculate the pool surface area in square feet by multiplying the length and the width of your pool.
4. Then, use this formula to figure out the BTUs you’ll need your heater to put out: pool area (sq. ft.) x temperature rise x 12.

For example, the average temperature in New Jersey during the month of October is 65°F. If you own a 16’x32′ inground pool in New Jersey, and you want the temperature of your pool to be 80°F all the time, the temperature rise calculation is:

80 (degrees) − 65 (degrees) = 15 degrees in temperature rise.

Using the BTU formula, the calculation would be:

512 (pool surface area in square feet) × 15 (Temperature Rise) × 12 = 92,160 BTUs of heat needed to be generated by your new pool heater.

Gas Pool Heater Pros

• Heats water quickly and at any outside temperature.
• Low emissions.
• Inexpensive to buy.
• The best option for large pools.
• Great for pools with an attached hot tub or spa.

Gas Pool Heater Cons

• Uses gas.
• Expensive to operate.
• Might have an ugly propane tank in your yard if you don’t have natural gas.
• Not eco-friendly.
• A short lifespan (about 5 years on average).

Do You Have Natural Gas?

We’re not trying to be too personal. We’re talking about gas lines running to your home.

Before you buy a gas heater, it’s good to know the distance from the gas meter to where the heater will be installed. Even if you’ve sized the heater correctly, depending on the distance from the meter, the gas line size may not support the heater.

Important factors to consider:

• How far is the run from the gas meter to the heater?
• What is the gas line size?
• New install—do you have power at the heater location?

By the time you’ve spent up to $2,000 for a heater, you don’t want to learn it’s going to cost $500 to $1,000 to run a new gas line. Knowing the correct size of the heater to purchase, distance, and gas size beforehand will save you time, trouble, and money. Contact your utility company to get more information before you buy a gas heater.

Pool Heat Pumps or Electric Pool Heaters

Water from your pool passes through the heat pump, just like a gas or solar heater. The heat is created by a fan that takes the outside air and directs it over an evaporator coil. The liquid refrigerant inside the coil absorbs the heat from the air and turns it into a gas.

The warm gas heads over to a compressor, which increases the heat, then make its way through a condenser. The condenser takes that hot gas and adds it to your pool water.

As the hot gas passes back through the condenser, it transforms back into a liquid and heads back to the evaporator to start the whole process again. Pretty cool, huh?

How Much Does a Pool Heat Pump Cost?

They can cost less to run than gas heaters, but may also cost more upfront because of their unique heat-generating ability. They also last longer than gas heaters, too.

Pool heat pump prices range from $2,000 to $3,000 and can go as high as $4,000 to $5,000.

Of course, the cost to run it will depend on where you live. For example, if you live in a warmer climate, it will cost less to run.

Maintaining an outdoor pool in Florida at 80°F (27°C) year-round can cost about $1,400 annually, but only about $300 if you use a solar cover.

In the Northeast United States, maintaining an outdoor pool at 80°F (27°C) from May to August costs about $1,100 annually, but only around $120 with a solar cover.

How to Find The Right Size Pool Heat Pump

Just like a gas heater, heat pump pool heaters are rated by BTU output. However, they’re also rated by horsepower (hp). Standard sizes include 3.5 hp/75,000 BTU, 5 hp/100,000 BTU, and 6 hp/125,000 BTU.

To calculate an approximate heater size for an outdoor swimming pool, follow the same steps as above for finding a gas heater size.

Pool Heat Pump Pros

• Eco-friendly; renewable energy source.
• No emissions.
• A good alternative in areas that won’t work well with a solar heater.
• Inexpensive to run.
• Approximately 20-year lifespan.

Pool Heat Pump Cons

• Requires electricity (220V outlet).
• Doesn’t work well in colder temperatures.
• Expensive to buy.
• Heats the pool water slowly.

Add a Solar Pool Cover and Digital Thermometer for Energy Efficiency

If you invest in any pool heating system, we highly recommend you also invest in a solar cover or liquid solar cover. If you imagine your pool as a giant cup of coffee that’s heated up by the pool heater, then a solar cover would act as the lid on the cup, helping to keep that heat in.

A digital thermometer is another good investment so you can keep an eye on your water temperature to help you maintain the heat. It will also help you determine what your preferred pool temperature is.

While you may assume 80°F (27°C) is right for you, your digital thermometer might advise otherwise, which could also save you money when heating your swimming pool.

What’s the Best Pool Heater for You?

Choosing the perfect pool heater will depend on where you live and what type of heat source is available to your home.

• If you live in the north with access to natural gas, choose a gas heater.
• If you live in the north with no natural gas, invest in a heat pump.
• If you live in the south, you’ll benefit from either a heat pump or solar heater.

If you’re concerned about your budget, we recommend a pool heat pump with a solar cover. It may be a heavy investment upfront, but it will pay for itself in the long run.

No matter what type of pool heater you decide to invest in, you need to practice good water chemistry. Pool water with low or high pH can cause eroding or scaling inside your heater. And high chlorine (including salt water pools), can also cause damage to your heater.

So make sure you always practice good water chemistry. Here’s our complete pool water chemistry guide for more information.

Are Pool Heaters Worth It?

If you live in an area that gets cold, even a little, and you’d like to keep your pool open longer or year-round, then they’re worth every penny. Just because the temperatures are getting colder doesn’t mean you have to close your pool for the season.

With the right pool heater, you can swim comfortably and enjoy your pool regardless of the temperature outside.

Happy Swimming!

The post How to Buy The Best Pool Heater appeared first on Swim University®.

Get a a pool heat pump, and you can get that experience without jacking up your utility bills.

What is a Pool Heat Pump?

It’s an appliance to heat your pool’s water, just like a gas pool heater or a solar pool heater.

Pool heat pumps differ from gas heaters in that they don’t produce heat—they transfer it.

How Does a Pool Heat Pump Work?

If you’re looking for a highly efficient pool heater, look no further than the pool heat pump. Well, solar heaters are super efficient too. But heat pumps are actually more similar to solar heaters than you you may think.

The pump uses electricity to pull in air that’s been warmed by the sun, and then moves it to the water to heat it.

What’s that? You want the technical, sciencey explanation? We got you.

1. The pool heat pump pulls in cool water from the pool.
2. The unit contains freon (a liquid refrigerant) and a compressor powered by electricity.
3. The freon is compressed until it reaches a temperature of more than 200°F (93°C).
4. The freon passes from the high-pressure zone of the unit, through an expansion valve, and into the low-pressure side, where the pressure on the freon is released.
5. The freon turns into a hot gas.
6. The gas flows through a set of evaporator coils.
7. As it circulates through the evaporator coils, the gas quickly cools.
8. During this cooling process, the gas transfers its heat to the water circulating through the heat pump; the refrigerant and the water never make direct contact.
9. The pool heat pump’s fan pulls in warm air, which flows over the coils and preheats the gas; the hotter the ambient temperature, the more heat the evaporator absorbs.
10. The freon reverts to a liquid.
11. The warm water flows into the pool, heating it.
12. The heat pump pulls more cool water in from the pool.
13. The process starts over and continues.

Aside from the electricity used to power the unit, a heat pump uses very little energy, making it an efficient and cost-effective method for heating your pool.

Our Top Pick

Hayward HeatPro Titanium Heat Pump

$4,699.00

A super quiet acoustic compressor cover and profiled fan blade which is also efficient performance. And the titanium heat exchanger is designed for maximum heat transfer, efficiency, and reliability.

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01/27/2023 09:27 pm GMT

Ideal Conditions for a Pool Heat Pump

The unit’s ability to heat the water passing through it depends, in part, on the warmth of the ambient air drawn into the heat pump. The warmer the air is outside, the warmer it will get in the unit, and the warmer your pool will be.

Once temperatures start to drop, the heat pump won’t be able to warm the water as much. Ambient temperature must be approximately 50°F (10°C) or higher for the unit to work properly. Any lower than that, and it won’t be able to keep the water warm anymore.

In addition the more humid the air is, the more heat the heat pump will be able to extract from it. This makes heat pumps an ideal choice for heating a pool in warm, humid climates.

Like any appliance, a pool heat pump can occasionally run into trouble. Knowing what to look for can help you enjoy uninterrupted warmth in your pool.

How to Troubleshoot a Pool Heat Pump

If your heat pump is acting up and not heating your water the way it should, it’s not too difficult to troubleshoot it and perhaps even fix it yourself.

Usually the first indication you’ll have of a problem is the pool won’t be as warm as it should be. If that happens run down this list of possible causes to find the culprit and get the heat pump up and running again.

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Tripped Breaker

It’s a pretty obvious problem, isn’t it? Is the heat pump on or off? The thing is, even if it’s on, it’s possible the breaker has tripped. Check the breaker box. If that’s not it, there may be a problem with the wiring, either in the breaker box or the hot tub.

Important: Use caution when dealing with electricity, especially around water. If you do find an electrical issue you’re not comfortable addressing yourself, don’t hesitate to call a professional.

Low Water Flow

It’s on, it’s working, but the pool just isn’t as warm as it should be. Could be low water flow, a common problem with pool heat pumps.

Check all the valves to make sure they’re open, then check whether the filter is dirty or even clogged. That’s an easy fix—just clean the hot tub filter.

Clogged Evaporator Coil

A heat pump needs air to heat water. If the evaporator coil becomes clogged with debris, the air flow will be too low to provide the right amount of heat for the water.

Check the coil and remove any leaves, dirt, sticks, twigs, or any other debris that may have gotten caught in there.

Thermostat Malfunction

Is the thermostat set to the right temperature? Remember, it needs to be set higher than the actual temperature of the water.

Use a thermometer to check the water to see if you have the settings correct. It could simply be a bad thermostat you’ll need to replace to get the heat pump back into working order.

Ice

Let’s be honest. Finding ice on a heating appliance is an indication of something gone horribly wrong. Luckily, it’s easy to diagnose the problem—it’s too cold outside for the heat pump to function.

When the temperature outside reaches about 50°F (10°C), the refrigerant inside the unit is already approaching freezing temperatures. This can cause ice to form, clogging the heat pump and preventing it from running.

Check the outside temperature. If it’s 50°F (10°C) or lower, it’s time to turn the pool heat pump off.

Freon Pressure Error

Are you getting an error on the control panel for freon pressure? You’ll need to check whether it’s too low or too high.

If the pressure is too low, chances are it’s too cold outside to operate the heat pump. In this case, you’ll have to turn it off and wait for the weather to warm up before using it again.

If the pressure is too high, you probably have a low water flow problem. See above for that fix.

Leaks or Condensation

If see water in or around the heat pump, don’t panic. Your first thought may be that it’s a leak, but it could just be condensation forming and then dripping from the unit.

Using a chlorine test strip, test the water around the heat pump. If it gives a reading, that’s pool water, and you’ll know you have a leak. If the test strip gives no reading, you can relax—it’s only condensation. It still needs to be addressed, though, because it means the heat pump probably has a clogged drain.

Remove any debris from the drain, and everything should go back to normal.

If All Else Fails, Call a Pro

If none of these remedies work, or you’re unable to find the problem, or it’s something you’re not comfortable fixing on your own, call a pro. Better to have your heat pump fixed properly than void the warranty or even possibly make the problem worse.

Extend Your Pool Season

What’s the point of having a pool if you can’t enjoy it? Shorten the time your pool is closed, and get more out of it than ever simply by hooking up a pool heat pump. You’ll be glad you did.

Happy Swimming!

The post The Complete Guide to Pool Heat Pumps appeared first on Swim University®.

A pool thermometer is going to tell you exactly what you’re dealing with, and whether you need to do anything about it.

NOTE: The following pool thermometers are available to buy on either Amazon and InTheSwim.com. Check both sites for availability. All the links are affiliate links which means if you click a link and make a purchase, we earn a commission at no additional cost to you. It helps us keep the lights on

The Best Digital Pool Thermometer

Our Top Pick

Inkbird Wireless Pool Thermometer

5.0

This is hands down the best digital pool thermometer we tested. Easy to set up, quality build, and all packaged in an elegant design.

Buy Now On Amazon

If you click this link and make a purchase, we earn a commission at no additional cost to you.

The Inkbird Wireless Pool Thermometer is perfect for people who want to know their pool temperature at all times without having to walk outside every time they need it. It also works great as a baby bath thermometer or spa thermometer!

It’s a high-quality, waterproof thermometer that can measure a wide range of temperatures. With accurate readings in both Fahrenheit and Celsius measurements, it will be easy for anyone who needs one.

Plus with its long-range connection up to 300 feet away from the receiver without going outside, you won’t need any other type of thermometers anymore! And if that wasn’t enough already, you’ll also get alerts when something goes wrong with your water level!

The Best Analog Pool Thermometer

Our Top Pick

Analog Floating Pool Thermometer

No frills, no fuss. This is a durable, reliable, and affordable floating thermometer for both pools and hot tubs.

Buy Now On Amazon

If you click this link and make a purchase, we earn a commission at no additional cost to you.

This Large Analog Floating Pool Thermometer is perfect for any outdoor or indoor swimming pools and hot tubs. It measures water temperature in both Fahrenheit and Celsius. The large display makes it easy to read from afar.

It’s made with premium quality materials that are durable and shatter-resistant.

Important: Make sure to remove your floating pool thermometer when adding chemicals to the pool. Until they’ve dissipated, some pool chemicals can be harsh on plastic thermometers and may cause some corrosion.

Why You Need a Pool Thermometer

OK, we don’t need to explain what a pool thermometer does. But you might be wondering why it’s necessary. Knowing the exact temperature of your pool offers a couple of benefits other than simply avoiding a cold shock when you jump in.

Pool Heater Troubleshooting

If you’re taking the trouble and spending the money to heat your pool, you want to know that everything is working properly. If your pool heater or solar pool cover isn’t doing its job, you can tell because the pool feels colder than it should be.

But knowing just how far the temperature has fallen can tell you whether the heater just need to be turned up, or there’s something wrong that requires repairing, or even replacing the heater.

Energy Savings

If you live in a warm climate, a pool heater is great for fall and winter, but may not be as needed in the height of summer. Keeping an eye on your water temperature can allow you to turn the heater down—or possibly even off—to save energy and money, and do something good for the environment.

Health Benefits

Some people who use your pool may have specific temperature needs. For example, heat can make multiple sclerosis symptoms worse.

Keeping pool water at a comfortable temperature can help someone with that condition not only enjoy the pool, but feel some relief from their condition. It can also help them get the exercise they need without overheating their body.

And if you have young children or any elderly pool guests, they’ll be less able to tolerate colder water, so it’s important to keep the temperature at levels that won’t harm them.

A pool thermometer is the only way you’re going to be sure the water is warm or cool enough for those who use your pool.

Frustrated by adding chemicals and trying to keep your pool clear all the time?

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Pool Thermometer Types

They’re relatively simple tools, but pool thermometers have more features than you may be aware of. They fall into one or more of four basic categories: mercury, digital, floating, and handheld.

A thermometer can be either digital or mercury, and be of the floating variety, but handheld thermometers will, of course, always be digital.

Mercury-filled floating thermometers can be damaged by severe weather and overzealous swimmers. If they break, you could have a real mess on your hands, including mercury in the water. Not to mention, broken glass could rip your liner, or worse, hurt a swimmer.

For these reasons, we highly recommend using plastic, digital, or handheld pool thermometer.

Forget the Toe Dipping

Why risk jumping into a freezing cold pool when you can know what you’re getting into beforehand? Grab a reliable pool thermometer, and gain control over one more part of your pool maintenance.

Happy Swimming!

The post The Best Pool Thermometers appeared first on Swim University®.

Three pool heaters can heat your pool: Solar, DIY options, and traditional pool heaters. So let’s dive into the best ways to heat your pool quickly and efficiently.

Before we continue, if you’re looking for help keeping your pool clean and clear throughout the season, check out our FREE Pool Care Cheat Sheet. It’s a totally free, easy-to-use guide to help you keep track of taking care of your pool.

Frustrated by adding chemicals and trying to keep your pool clear all the time?

We cut out all the confusion of pool maintenance in this easy-to-read illustrated ebook and video course. It'll help you save $100 right away on pool care!

Click Here to Learn More

No matter which kind of heating method you use, your pool’s heat time depends on a few things:

• What type of pool you have.
• How much water it holds.
• Whether it’s insulated or not.
• How much sun you get.

How to Heat Your Pool With Solar Pool Heaters

The sun is nature’s FREE pool water heater. Your pool water absorbs sunlight and warmth just by sitting out in the sun.

An average pool will heat up about 0.7° per hour under the noontime sun. But the downside to that sun? Evaporation.

Evaporation can cause the same pool to lose 5°F for every quarter inch of water evaporated.

Solar pool covers, aka solar blankets, are large sheets of insulating plastic that look like bubble wrap and lie on top of your pool water. They not only capture the energy of the sun, but they also keep heat in by reducing water evaporation, especially at night.

The heat your pool gains during the day are lost at night. A solar blanket keeps some of that heat from dissipating and cuts evaporation by about 95 percent.

When water evaporates from your pool, you also lose the chemicals in that water. A solar blanket can prevent 35 to 60 percent of your pool water chemicals from disappearing into thin air.

Depending on where you live, a solar cover may not keep the water as warm as an electric or gas heater. However, it still can reduce water evaporation and help retain heat.

Here are our picks for the best solar covers for any size pool.

If you have a large pool, or if you often swim, removing the solar blanket can be a little bit annoying. You can cut the solar blanket into smaller panels and remove the pieces one at a time.

Or it might be worth investing in a solar cover reel.

What’s a Liquid Solar Pool Cover?

These are made from a fatty alcohol substance that forms a thin layer on top of the water and helps prevent evaporation. You can’t see it, you can’t feel it, and it’s safe to swim in.

If you want to see a liquid solar pool cover in action, be sure to check out our other video.

Liquid solar covers are easier to use than a solar blanket; you’re just adding liquid to your pool instead of reeling in a blanket. But solar blankets are about 25 percent more effective at keeping heat and water in the pool.

Whether you use a liquid or a blanket solar cover, they help retain heat and stop evaporation, especially at night. Click here to learn more about liquid solar covers and how they work.

Our Top Pick

Natural Chemistry Cover Free Liquid Solar Cover

$29.70

Yes, liquid solar covers actually work and quite well. While they don't attract the sun's heat to your pool water, they help reduce water evaporation at night to keep the heat in your water.

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If you click this link and make a purchase, we earn a commission at no additional cost to you.

01/27/2023 08:00 pm GMT

Now let’s talk about some next-level solar heating options. If you have an above ground pool, you may want to consider heating the water with a Solar Dome.

How to Use a Solar Dome to Heat Your Pool

A Solar Dome collects the sun’s rays and circulates your pool water through warming channels before returning it to your pool.

Solar domes can raise the temperature of your pool up to 10 degrees, especially over several sunny days.

They can be challenging to install and require some extra connectors if you’re trying to position it where there’s more sun. They’re also not cheap.

But aside from the initial purchase cost, it runs on solar — which means completely FREE heat for your pool.

If a solar dome is a little out of your budget or you’re feeling handy, you can try making your own, cheaper solar heater with a black irrigation hose and a sump pump.

If this option sounds interesting to you, there are many great DIY channels on YouTube showing you how to build your own black hose solar heater for under $100.

Want to learn even more about solar pool heaters? Click here!

How to Heat Your Pool with Gas or Electric Heaters

These are the most expensive pool heating options, but they’re the most powerful.

Using a Natural Gas or Propane Pool Heater

Pool water passes through your heater while a combustion chamber burns and warms the water before returning it to the pool.

Gas heaters are probably the most powerful heater option. They’re very efficient and will heat your pool quickly, especially if you live where temperatures are cooler.

However, it is not a cheap system to install. And you do have to pay for the gas to keep it running. Not to mention the maintenance and troubleshooting it requires.

The installation cost can be between $500 to $1500, depending on the situation. If you want to do some work yourself, it could potentially save you hundreds or thousands in costs. And running it will cost around $200 – $400 a month.

Using an Electric Pool Heat Pump

Pool heat pumps draw in warm air from the atmosphere and use that air to heat the pool. It’s a low-energy process that relies entirely on your outside temperature.

So, as long as the weather is warm enough (around 40 degrees or higher), pool heat pumps can be a good option.

The installation cost is between $500 to $1500. DIYers could potentially save you hundreds or thousands. And running it will cost around $100 – $200 a month.

If you want to see our favorite gas heater and heat pump brands, check our Pool Heater Comparison Guide.

And regardless of how you heat your pool, we recommend getting some type of surface protection — like a solar cover — so you don’t lose water and heat at night.

What is the Best Way to Heat a Swimming Pool?

The fastest way to heat your pool is to use a gas pool heater and a solar cover. It’s like heating up your coffee in the microwave and putting a lid on it.

No matter how you plan to heat your pool, you should at least have a solar cover (or liquid solar cover) to help you retain the heat. This conserves energy, saves you money, and keeps your pool heated longer.

If you have more questions about pool maintenance, go check out our FREE Pool Care Cheat Sheet.

Happy Swimming!

The post How to Heat a Pool Super Fast and Crazy Affordably appeared first on Swim University®.