gas pool heaters

Which Gas Pool Heater To Buy For Your Pool?

Introduction to the Gas Pool Heater

Swimming in a freezing pool is a complete nightmare yet a lot of us want to continue enjoying our pools during cold seasons. The good thing is that we are not short of options when it comes to pool heaters that can warm and make the pools usable even in the coldest of nights. On the flip side, there are so many pool heaters the majority of which are poorly made thus making it increasingly difficult for buyers to make a good choice. The good news for you is that we have done the heavy lifting by conducting extensive research to look at the various pool heaters in the market and how well they perform.

In this particular piece, we will be talking about gas pool heaters. These are the oldest heaters in the market. They used to be so reliable until economists messed up and gas prices became an issue. Gas pool heaters work by burning up gas in a heating chamber installed near a water pipe. As the gas is heating up, the pool pump will push water through the tube where heat energy will be transferred to the water. With the right gas heater, this process is usually very energy efficient.

Benefits of Gas Pool Heaters

So, how do gas pool heaters compare to the other types of heaters? What benefits should users expect from this equipment?

  • Effectiveness

Gas pool heaters are arguably the most effective in heating your pool. This equipment will burn your water at a much faster rate compared to other types of heaters. The fact that they can be used almost anywhere and at any time also makes them a fantastic option for everyone who doesn’t want any inconveniences when heating their pools.

  • Versatile

With a gas pool heater, you won’t have to stop using your pool just because there is a shortage of gas. Most of these heaters are designed to be used with different types of gasses including propane. Therefore, you can keep your heater running throughout the year unlike say electric heaters which stop working immediately there is a power outage.

  • Compact Design

Most gas pool heaters are made in a very compact design allowing them to fit in small spaces more conveniently. The gas pool heaters are a good option to people with limited space around their pools.

  • Easy to Install

Gas pool heaters are not just easy to install, but the initial cost of installation is also more affordable than the alternatives. Most of these heaters won’t take more than a few hours setting up before you can start using them. When installed correctly, gas pool heaters will serve you for a very long time without the need for frequent maintenance or repairs of any accessories.

Choosing the right Gas Pool Heater

Once you’ve finally decided that a gas pool heater is the way to go, you’ll need to consider the following factors to make sure that you are getting the right equipment.

  • Pool Size

Gas pool heaters are rated according to their Btu output. This shows the amount of energy the heaters can produce and hence you can tell the equivalent size or capacity of the pool that they can be used with. Therefore, you need to know how big your pool is to determine the right heater to buy. Buying a heater with slightly more BTUs than what your pool needs shouldn’t be an issue. This will help in getting your pool heated a lot faster and more efficiently. However, when the Btus are too high, the heater will be consuming too much gas which isn’t necessary. On the other hand, if you buy a heater with Btus below your pool’s requirement, it will consume lots of energy without delivering the needed outcome.

Gas heaters usually have specifications on the pool sizes they can be used on and hence getting the right heater shouldn’t be a problem

  • Efficiency

With the continuous rise of natural gas prices, you cannot afford to buy an inefficient heater. You need to make sure that the item you are choosing has a high-efficiency rate. Such heaters are generally expensive, but their running costs are low. In the long run, they’ll be a better value for your money than the alternatives. In most cases, efficient heaters also cost a lot less when it comes to maintenance. This saves you lots of money thus reducing the overall cost of owning a gas pool heater.

  • Heat Exchangers

Heat exchangers are responsible for transferring the heat energy from the heating chamber to the water. A lot of gas pool heaters used to be made of copper heat exchangers. These performed relatively well, but they were always associated with durability issues. New heaters are made of titanium or cupronickel heat exchangers. These are not only great when it comes to performance, but they are also very long-lasting. The materials are also corrosion resistant for an extended lifespan. We, therefore, urge you to either go for titanium or cupronickel heat exchangers.

  • Durability

If you are going to spend over $300 or so of your hard-earned money on a heater, it’s only fair if you get a durable one. You need to look out for the material making the heater before purchasing it. Ideally, a pool heater should have rust and weather-proof exterior protecting it from harsh weather conditions. You should also try and get heaters made of UV resistant materials. As you can expect, most of the high-quality heaters are made by reputable companies, and that’s why you also need to be keen on the brand you are choosing.

  • Control panels

Advanced gas pool heaters are designed with control panels from which you can customize how the device works. Through these panels, you can set your desired temperature and adjust it to the last degree. Some of these panels also feature alert systems which let you know whenever there are any issues with the heater. The more advanced a control panel is, the more expensive the heater is.

  • Warranty

After splashing hundreds or even thousands of your money on an appliance, you have to get a good warranty for it. There are no compromises here. This saves you from incurring additional costs in case of the equipment malfunctions in the near future.

The Best Gas Pool Heaters

This part will be useful to everyone who doesn’t have enough time to follow the above guide to purchasing their unique gas pool heaters.

  1. Hayward H150FDN Universal H-Series 150,000 BTU Pool and Spa Heater

This reasonably priced gas heater houses some of the best features that you can only find in high-end products. The heater has one of the highest efficiency rates in the market saving your budget significantly.

The Hayward H150FDN heater features 150,000 Btus is ideal for both small and average-sized swimming pools. The heater can warm your 60-degree pool to 85-degrees in less than an hour! With this heater, therefore, you can fire it up, take your dinner and your pool will be ready for you even before you are done.

The overall construction of this gas pool heater was also done with durability and performance in mind. The heat exchanger is made of cupro-nickel Finn plate; the ignition features a unique silicon nitride ignition while the combustion chamber is made of fire tile.


  • Affordable
  • Energy efficient
  • Feature an advanced LED display
  • Durable construction
  • Works in all weather conditions


  • Limited to 20,000-gallon pools and below

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  1. Pentair 460736 MasterTemp High-Performance Eco-Friendly Pool Heater

To many, the Pentair 460736 MasterTemp is the best pool heater in the market right now. This incredible beast is rated 400,000 Btu capable of heating over 30,000-gallon pools in record time. The heater is also very efficient regarding energy consumption and output thus reducing its operating costs.

The heater also comes with a digital display that gives you access to its various settings. It also features a high limit switch, electronic ignition, stack flue sensor, and a water pressure switch. These features make this unit not just easy to use but very safe for all types of pools.


  • Energy-efficient
  • Durable construction
  • Easy-to-use control panel
  • Very powerful


  • At 400,000 Btu, the heater is still quite costly to operate

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  1. Hayward H300FDN Universal h-Series 300,000 BTU Pool and Spa Heater

This heater is designed to offer even more power than the Hayward H150FDN discussed above. It’s, therefore, a good option for residential and commercial pools. The fact that this heater has been kept at 300,00 Btu and not more also means that you will get the high heating abilities you need without hefty running costs. This is because 300,000 costs less to operate than higher rated heaters. The device has also been designed with advanced engineering to boost its energy efficiency even further.

The heater features durable and high-performance cupro nickel heat exchanger, electronic ignition as well as a fire tile combustion chamber. You will also get a user-friendly LED screen and a couple of smart design features that allow you to customize it to your desired settings.


  • Energy efficient
  • Easy to install
  • Features an LED control panel
  • Reasonably priced


  • The heater produces quite a lot of noise

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Final Thoughts on Gas Pool Heater

The good thing with having a lot of options to choose from is that you cannot miss something decent which is within your price range. Just follow the above guide, and we are confident that you will make the right decision. Even better, choose any of the discussed heaters above and save yourself the hassle of comparing dozens of equipment.

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