Best Above Ground Pool Heaters list – 2020


If you’re looking for the best above ground pool heater, then you’re at the right place. This article contains all the necessary things you need to know about the various types of heaters available on the market, the advantages and disadvantages of each type and finally, which ones are the best.

Here’s a short video that quickly summarizes this review :

You can read the introduction part, which covers the different types of heaters and their properties, or just jump straight to the list and find yourself the best above ground pool heater.

ImageHeater NameBTUsFeatures
Hayward HP21104T HeatPro TitaniumHayward HP21104T HeatPro Titanium110K10/10
Hayward H250FDN Universal H-SeriesHayward H250FDN Universal H-Series250K9/10
Hayward H100ID1 H-SeriesHayward H100ID1 H-Series100K9/10
TopChances Electric Heating ThermostatTopChances Electric Heating Thermostat-6/10
Pool Heater- Electric Heat PumpPool Heater- Electric Heat Pump55K7/10

Heaters for above ground pools are the best option to maintain the water at the right temperature which can be very useful when you want to use your pool at night or during the winters. Having a heater is not as important as having a pool liner, but it does add some extra comfort to your pool.

Before buying any type of heater, you should understand how they work and what type is best for your pool.

The important things to consider before selecting a heater include fuel economy, accessibility of fuels, the comparable cost of the product, and emissions. Pool heaters using different fuel types have different capacities, heating times, costs and capabilities.

Various Types of Above Ground Pool Heaters

Before I bought myself a heater for my pool, I did some research and found that there are quite a few types of  heaters available on the market including:


Wood-based heater

This is an old-fashioned heater and is obviously not a popular choice anymore. To use it, you have to put some firewood in its base and then burn it. This causes the water-filled chamber above it to heat. The heated water then flows through the pipe into the pool.


Propane-based Heater

This is definitely a better choice when compared to the wood-based heater. It is portable and requires propane gas to function. The gas is filled in a bottle and which is detachable and can be used with other gas-based appliances. You can even share it with your gas grill. It heats up the pool quickly, but the only drawback is it takes a lot of gas, which is expensive and most of these propane pool heaters are not fuel efficient. Thus the cost of running these heaters is high.


Electric Heater

It’s one of my favorite choices, as most of these electric heaters work very efficiently. They are the perfect choice for several reasons. However, they are a bit costly when compared to other types of heaters. This is the only drawback of the electric pool heaters.


Solar Pool Heater

Many people prefer solar pool heaters, as they take heat from the sun, therefore, eliminating the requirement of any type of power source to warm the pool water. But, installing solar pool heaters is quite a costly affair. Another drawback is that these need direct sunlight to work efficiently making them useless in cloudy days and places which don’t have much sunlight.

Before we begin with the list, you should know that the heating capacity of every heater is rated in terms of BTUs. BTU stands for British Thermal Unit and is a measure of heat energy.

Here is a table that will help you understand and estimate the BTU unit used in the description of the heaters below

BTUGallonsSquare Feet
100,000 – 200,0001,000 – 10,000300
200,000 – 300,00010,000 – 20,000500
300,000 – 400,00020,000 – 40,000800
400,000+40,000 – 80,0001200

Tip: It is recommended to buy a heater with slightly more heating capacity than your pool’s requirement.

Best Above Ground Pool Heater


1. Hayward HP21104T HeatPro Titanium 110,000 BTU AHRI Residential Pool Heat Pump:

Hayward HP21104T HeatPro Titanium


Hayward’s HeatPro pool heater is a highly efficient and provides perfect water temperature and uses 80 percent less energy than Natural gas heaters. It offers the best way to heat your pool and is absolutely safe, energy efficient and reliable.

This heater takes the air from the surrounding area and uses it to warm the water. It comes with a digital LED control panel and maintains the temperature at the value set on the panel.

The profiled fan blade and aural compressor offer great performance and efficiency. The best features of this product are:

-Ultra-Gold rust resistant clear fin for outstanding durability

-It has Titanium heat exchanger for optimum heat transfer, durability, and efficiency

-UV resistant body panels, which is rust and deterioration free and holds up pretty good against external environmental conditions.


Read my Hayward hp21104t review here.

Check out the latest price & user reviews now!


2. Hayward H250FDN Universal H-Series Low NOx 250,000 BTU:

Hayward H250FDN Universal H-Series

This is one of the most popular and recommended heaters amongst the buyers.

It is a Spa and Natural Gas Residential Pool Heater that is designed with advanced technology and robust features and is considered as one of the best and ideal heaters for existing or new installations.

The modern design provides the option of right or left side connections for electricity, water, and gas. there’s also an option to choose between 220v or 110v power supply. This superior adaptability is combined with modern, lightweight design. The front panel is completely accessible for service and installation. It is a competent solution for existing or new pool or spa.


Read my Hayward h250fdn review here.

See what the customers are saying about this heater!


3. Hayward H100ID1 H-Series Low NOx 100,000 BTU Natural Gas Residential Pool and Spa Heater:

Hayward H100ID1 H-Series


It is an excellent and efficient heater that comes with advanced features, innovative draft technology and ensures high-performance in any kind of weather conditions.

It has the capacity to heat the entire pool rather quickly. It’s got an electronic direct spark ignition for easy plug-in of a 120v electric cord and automatic control for quick heating.

It is not suggested to use this heater at greater elevations than 2,000 feet above the sea level.


View the heater on Amazon



4. Swimming Pool Heater- Electric Heat Pump-small 55 K BTU:

Pool Heater- Electric Heat Pump

It is one of the newer products on the market which helps keep the water temperature perfect for cold winter nights. This heater uses 14 amps at 220v, and it is a 55k BTU capacity heater. This heater is sufficient to maintain the water temperature in small pools which can hold 1,000 gallons or less amount of water.

The installation is easy, and it takes around 20 minutes. The system runs on 12 gauge wire, 20amps, and 220V circuit. It won’t work with 110V power supply.

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5. TOPCHANCES Only Support 220V 3KW NEW Swimming Pool and SPA Heater Electric Heating Thermostat:

TOPCHANCES Only Support 220V 3KW


This is a nice thermostat that comes with a UHTPT (ultra-high temperature protection thermostat) switch that controls overheating and keeps the users away from danger, but remember, you can use the pool only after the complete installation procedure is done.

One should make sure to check the safety of the thermostat first by testing in a tub filled with water and turning the system on till the thermostat temperature is stabilized before using the pool.


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These are some of the best and reliable above ground pool heaters that I found based on my experience and research. I hope you found the article informative and useful in selecting the right heater for yourself! If you’re interested in a vacuum for your pool, have a look at our post on the best above ground pool vacuum.

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