Best Pool Heater (Top 10 Swimming Pool Heater Reviews)

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A pool heater is a device that can bring about an appreciable increase in the temperature of a pool for added comfort and convenience. These devices have a good design and get powered by several means. Regardless of the dimension and orientation of your pool, there is a pool heater that will work for it.

For someone who loves to go to the pool, the importance of having a swimming pool heater for above ground pool can not become overemphasized. For a few people, swimming is a sport while for others, it is a recreational activity. That said, it can’t become disputed that going to the pool or spa is an excellent way to relax.

Before jumping into a pool, it is wise first to observe the temperature of the water. It is the temperature of the lake that will determine how well you will swim and how long you will swim comfortably. 

If the temperature of the pool is high, consider bringing it down to an appreciable level. If it is too low, you may have to raise the temperature a bit. The only way to do this is by using a pool heater.


1. Hayward H150FDP Universal, Above ground pool heater

Hayward H150FDP Universal

This above ground pool heater is a square-shaped pool heat pump. It can generate heat up to 50,000BTU. It features stainless steel hardware, polyethylene screen, quiet scroll-compressors, and body panels that are resistant to ultraviolet rays. This unit works well for new pools and existing water bodies. To get the best out of this heater, make sure you read the user manual. It is a durable pool heater that weighs 190 pounds. This pool heater has a dimension of 31 x 40 x 35 inches. The Hayward HP50TA works well for an 18000-gallon pool. It works for in-ground and above-ground pools. It works well in both hot and cold weather conditions. After purchase, make sure a qualified technician does the installation. This fact will help to guarantee the safety and protect the unit from damage.


  • Easy to install.
  • Easy to maintain.
  • Value for money.
  • Reasonable price range.
  • No noise in operation.


  • No warranty guarantee.
  • Incomplete installation kit.
  • Quite big.
  • Not fast-warming.

2. Hayward pool heaters-Hayward H100IDP1 H-Series 100,000 BTU​

Hayward H100 pool heater

Hayward pool heaters H100IDP1 functions optimally in all weather conditions. It has an electronic direct spark ignition which makes it easy to start. This unit can produce heat output up to 100,000BTU. We recommend that you use this heater on pools that are not up to 450 sq. Ft. Also, please do not attempt to install it at an elevation higher than 2,000 feet above sea level. The manufacturer has not designed the Hayward H100IDP1 H-Series pool and spa heater for commercial purposes; it should use only for residential purposes. It can plug into a 120V electrical outlet, and its weight is 79 pounds. This heater has a dimension of 26.5 x 30.5 inches. A 1-year warranty backs the unit, and it is cool to the touch. It does not have high and low flow speeds. If you have a swimming pool or spa at home, give purchasing this unit serious consideration.


  • Easy to install.
  • A warranty backs it.
  • High efficiency.
  • Reasonable price.
  • Easy to maintain.


  • Leakage concerns.
  • Not durable.
  • No digital controls.

3. Pentair Pool Heater-Pentair 460736 MasterTemp​

Pentair Pool Heater

This is a natural gas swimming pool heaters, and it can produce heat up to 400,000BTU. It is a durable and high-performing unit. It has digital controls. Hence, temperature adjustments can become made quickly. It features indicator lights for proper monitoring and operation of the unit. It has an impeccable design that adds to your pool aesthetics. The heater also has a water pressure switch and a manual gas shut-off.

Another safety feature incorporated in its design is the stack flue sensor which prevents the heater from overheating. This product is certified safe, produces no dangerous emissions, and it meets all quality control requirements. A rotating digital display is also in place. The weight of this heater is 120 pounds, and its dimension is 29.9 x 36.1 x 22.8 inches. It works well for a 30,000-gallon pool. It also works for saltwater pools and other types of pools. More importantly, this heater is an eco-friendly unit.


  • Compact unit.
  • Quiet in operation.
  • Digital control and display.
  • It does not emit radiation.
  • Safe for use.


A bit challenging to connect to water supplies.

4. American standard safe T heater

American standard

American standard safe T heater is a well-crafted pool heater. It is UL approved, and electrical requirements are 120V, 15A. This heater is compatible with American standard whirlpool tubs, and it is straightforward to install. It weighs 1 pound. Hence, it is incredibly lightweight. A limited lifetime warranty backs it. The heater does not make use of batteries; instead, it connects to an electrical outlet. The dimension of the product is 7.50 x 4.81 x 3.56 inches. It runs at a constant temperature and keeps water warm for an extended period. It features a unique end flange. This heater is fit for any pool, Jacuzzi tub, or spa. It is important to note that this heater does not offer overheat protection.


  • Very lightweight.
  • Aesthetic design.
  • Easy to install.
  • Reasonable price range.


  • No overheat protection.
  • No temperature adjustment.
  • Not fast-warming.
  • Not versatile since the company has made it for American standard whirlpool tubs.

5. Hayward electric spa heater-Hayward CSPAXI11 11 Kilowatt​

Hayward electric spa heater

This component is an electrically powered unit. It is a compact heater with a stainless steel tank and a safety sensor electric heating element. This heater is a space-saving heater that you can use for all types of swimming pools and spas. It also has an indicator light and a stainless steel threaded head. The Hayward CSPAX111 electric swimming pool heater is very easy to install. It weighs 12.2 pounds and a product dimension of 8.3 x 12 inches.

This electrically powered heater can raise the temperature of a spa up to 40 degrees Celsius. The minimum electrical requirement is 5.5kW, 240V. It is not suitable for saltwater. If there is a fault, you can rely on an efficient customer support team. The heater is easy to repair, it has a simple design, but it is a powerful unit. This swimming pool heater works well for a 2500 gallon pool. A 1-year warranty backs it.


  • Moderately priced unit.
  • Easy to repair.
  • Easy to install.
  • Great customer service.
  • High heat output.


  • Not durable.
  • Not fast-warming.

6. sta rite spa heater – Above ground pool heater

sta rite spa heater

sta rite spa Above ground pool heater runs on natural gas, and it can produce heat output up to 200,000BTU. It has key features such as LED temperature readout, weather-proof frame, smooth controls, and attractive design. The manufacturer has made for indoor and outdoor pools. The unit also has dual thermostat controls, PVC union connections, and a 6-position control panel. It does not produce any dangerous emissions, and it is certified safe for residential use. It has a cupro-nickel exchanger that improves the heater’s ability to withstand harsh conditions such as high flow and low pH.

Efficiency rating is 84%, and it has a rustproof housing. The design of the heater is both sleek and compact. The weight of this heater is 131 pounds, and this makes it extremely lightweight. The dimension of this product is 34 x 32 x 26.8 inches. It is suitable for saltwater use, and it is economical to operate. The unit does not make use of a battery. Users can use it for in-ground and above-ground heaters.


  • Lightweight and compact.
  • Space-saving and portable.
  • Value for money.
  • Inexpensive and affordable.
  • It Produces enough heat.
  • Low energy consumption.


Not particularly durable.

7. FibroPool FH055 In-Ground Swimming Pool Heater​

FibroPool FH055

FibroPool FH055 has an output of 55000 BTU. It is made to provide heat to both above-ground pools and in-ground pools. Using this heater is an excellent way to bring down the cost of energy and electricity. This unit runs on a 12 gauge, 220V circuit and it has a coefficient of performance of 5.92. It features a digital display for easy adjustment of temperature settings. It has a weather-proof case and a sleek design that fits perfectly into your existing swimming pool décor. The heater is eco-friendly and very easy to install. Another advantage of this heater is that it has different mounting options. The weight of this unit is 120 pounds while its dimension is 48 x 20 x 24 inches. It is very versatile and can fit into any pool pump. The heat exchanger made from 100% titanium.


  • Easy to install.
  • Easy to operate.
  • Rugged design.
  • High efficiency.
  • Great heat output.
  • Reasonable price range.


  • Not fast-warming.
  • Worries about shipping conditions.

8. Ecosmart pool heater-BEST POOL HEATER​

Ecosmart pool heater

This heater makes use of self-modulating technology. It is a well-designed and wonderfully crafted swimming pool heaters. Its minimum electricity requirements are 27kW, 240V, 112.5A. It uses the latest flow sensor technology. Hence, the traditional pressure switch activation gets eliminated. This heater is a durable and reliable unit. It also lasts long. It features a digital timer that allows you to set temperature by increments of degree. Users can operate it remotely, and it can serve as a secondary source of heat.

The size of this unit measures 17 x 14 x 5.5. Therefore, it does not take too much space. Its weight is 24.2 pounds. It does not make use of batteries since it can get plugged into an electrical outlet. A 2-year warranty backs the unit. The warranty does not cover the heating elements. This pool heater is CSA, UL and ETL certified. Maximum pool size for the heater is 11,000 gallons.


  • Digital and remote control.
  • Very efficient.
  • Saves energy and water.
  • Heat output is high.
  • Low electricity consumption.
  • Sturdy and well built.


  • Corrosion and rust.
  • Inconsistent heating.

9. Happybuy Heater-Happybuy 11KW 220V Pool Heater​

Happybuy Heater

Before using this heater, ensure proper grounding and insulation. It has a temperature switch that automatically shuts down the system whenever there is an unexpectedly high temperature. To ensure maximum effectiveness; the circulation pump should be turned 120 seconds before the heater gets powered-on. It does not make use of a traditional magnetic flow switch; instead, it makes use of a temperature sensor. This unit can serve as a secondary heat source. It works well for small pools and spa. The body of this heater made from aluminium. Its minimum electrical requirements are 50A, 220-240V, and 11kW. It does not make use of a battery, and the heater weighs 16.64 pounds. The size of the unit measures 23.2 x 15.3 x 4.7 inches. It is safe for use for both in-ground and above-ground swimming pools.


  • Value for money.
  • Easy to install.
  • Self-modulating unit.
  • Fast warming unit.
  • Price is good.


The user manual is not easy to comprehend.

10. Jandy pro series pool heater

Jandy pro series pool heater

This heater runs on natural gas. It can deliver heat output up to 400,000BTU, and it has a compact design. The user manual is straightforward to comprehend, and the unit is very lightweight. It is energy-efficient, space-saving and offers plumbing flexibility. The thermal efficiency rating for this heater is 83%. It does not emit any dangerous gas, and it is easy to manoeuvre. The weight of the heaters is 151 pounds. Its size measures 40 x 24 x 28.5 inches. Upon installation, this heater is fairly easy to control. It makes use of the latest trends as far as pool and spa heating is concerned. This unit is not loud at all.


  • Price range is okay.
  • Enough heat production.
  • Saves-energy.
  • Space-saving and compact.
  • Easy to maintain.


  • Does not work well when the pH level is low.
  • Not very durable.


Solar pool heaters:

Just as the name suggests, solar pool heater transforms energy from the sun into useful heat through a solar panel. These heaters do not cause any damage to the environment. Long term, solar pool heaters save you more money than other pool heater types. The major drawback of a solar pool heater is that it becomes useless when there is no sun.

Electric heat pumps for pools:

Generally, they do not have a source of heat. Instead, they preserve the temperature of the lake by making use of the warmth of the surrounding air. They are less costly than other type of heaters. Their installation is a bit simpler too. The downside is that they are not fast-warming.

Gas pool heaters:

Liquefied petroleum gas and natural gas are used to power these types of heaters. The choice of these two gases is because of their particular physical and chemical properties. Research and market survey has shown that natural gas is less expensive than propane. The chemical energy in these gases gets converted to heat energy, which is then transferred by circulation. These gases get burned in a combustion chamber. Gas pool heaters are ideal for large pools because they are more powerful to work. They are also fast-warming and tend to last longer than other types of heaters. They have a higher long-term cost, however. Pool heaters are classified based on their power source. Instead of this, we have three main classifications – gas pool heaters, solar-powered heaters, and electric heat pumps.

what size of heater do I need for my pool?

Here are some of the things to look out for before paying for a pool heater.


This has to do with the appearance and attractiveness of the pool heater. There are many beautiful designs out there. So, why buy an ugly unit? A right pool heater should fit into your existing pool décor. It must combine style, elegance, and flamboyance. Eye-Catching design gives people something to talk about, and it gives your pool a bit of class. The model has to do with the color, shape, and dimension of the pool heater. Be sure to put all these into consideration before making a decision.


The size of a pool heater is also essential. You should choose a portable one from the available appliances in the marketplace. Cause a bulky is not an ideal to buy. Mobile types are handy and tale small space, which is helpful for the users.

Therefore, the heater can easily be put aside when it is not in use. A small pool heater also makes it easier to maneuver and transport a pool heater. If it is overly prominent, this will not be easy to do. Moreover, the size of a heater does not determine how effective it will be. There are several small but efficient heaters out there.

Heat output:

A right pool heater must be able to raise the temperature of a pool substantially since that is its primary responsibility. If it is not able to do this, do not buy it. A right pool heater should warm the water in a pool with minimal input. This matter is called efficiency. There are so many wonderfully packaged pool heaters in the market that underperform. Look out for the output rating of any heater before you pay for it. This fact will save you a lot of money and stress eventually.


The ease at which a pool heater can get installed should become included in your decision-making. Equally important is the cost of installation. There are a few pool heaters that you can assemble and install by yourself. There are also a few others that will require the attention of a qualified technician. On the other hand, some pool heaters require a few hours to install while some can get installed in a jiffy. These are the things that determine the cost of installation. If you have to pay too much to set up the unit, reconsider your stance.

Energy consumption:

Energy consumption has to do with how much gas or electricity the pool heater needs to bring about a degree change in temperature. It is about the cost of operation of the pool heater. If the heater gulps too much electric current, it will have an impact on your electricity bill. Consequently, you would have to pay more and save less. In the same vein, if a pool heater uses too much gas; your savings will get depleted. A right pool heater characterized by low energy consumption and low cost of operation. Buy a pool heater that will help you save money.


Safety is one of the most important things to look out for before buying a pool heater. It is about the security of lives and exposure to risk and danger. UL, ETL, and CSA must certify a right pool heater. This matter the appliance has passed in all safety and quality control tests. Some pool heaters are fire hazards and capable of causing an explosion. Do not choose these types of pool heaters. They will expose you, your family, and guests unduly. As they say, safety begins with you.


The decision on which pool heater to buy is not an easy one to make. It requires knowledge of the product and a bit of research. If you do not bridge this knowledge gap before paying for a pool heater, you will make the wrong choice. Regrettably, making a wrong choice has financial, economic, and safety consequences. To prevent this scenario, we have prepared this comprehensive guide. It contains all you need to know about a pool heater, its mode of operation, types, as well as the best products in the market.

Reading this article will save you much time in the long run. It will also save you a lot of money, and it could be a life-saver. The ten products discussed in this text are some of the most reliable and best-selling products in the market. These products have also received rave reviews from present users. If you feel you have other options, make sure what the product offers is in line with the critical features outlined here. Do not buy a pool heater blindly. Please read about the product and what others are saying about it.