The 6 Best Natural Gas Pool Heaters, Reviews 2021

Natural Gas Pool Heaters are the products which make your swimming pool warm in the extremely cool winter days.. Basically a natural gas pool heating system runs on propane or natural gas. So if you quickly want to heat your swimming pool for a short period of time. Then natural gas heaters are the best option available for you. Because they are affordable and very low maintenance.

Natural Gas heaters are available between the price ranges of less than 1,000 to more than 5,000 USD. In comparison with other pool heating systems its economical and very low maintenance with longer lifespan. And it’s quite durable with low operating cost if the gas being used is cheap in your area. The installation of pool heaters is painless than other heating systems. Proper installation and maintenance of your gas pool heater can increase its efficiency so it’s good to hire a qualified pool professional for installation of the heater. Normally, the best Gas pool heater last for five or more years. The proper installation and maintenance could increase the lifespan of a pool heater. A gas pool heater can preserve desired temperature in your swimming pool regardless of the temperatures outside.

The 6 best Natural Gas Pool Heaters Reviews

If you want to make your swim-pool warm in the cool winter days, you’ve to purchase the perfect natural gas heater. For this, we’re here to provide you with a detailed reviews about 6 Best Natural Gas Pool Heaters which are affordable and reliable:

1. Hayward H100

Hayward H100 is a versatile above ground pool heater reliable for the area less than 450 square feet. The Hayward H100 is available under the price tag of 1500 USD. The installation of Hayward H100 is pretty simple because of the simplified design of plugin can raise the temperature of your pool water in just a few hours. And available in either natural gas or propane configurations. Overall it provides reliable performance and its customers are satisfied with the performance of this above ground pool heater. The cleaning of this pool heater could be a difficult task and normally takes a few hours to catch the desired temperature. Hayward H100 is best for above ground swimming pool.


  • Its induced draft technology allows the unit to stay lit and operational even under fairly windy weather.
  • Its slim unit is two feet long and has a slim profile of 21 inches.
  • Made from quality material.
  • Easy & Hassle-free installation.

2. Sta-Rite Max-E-Therm

Sta-Rite Max-E-Therm is a compact and reliable natural gas pool heater. The product has a digital temperature panel so the user can check the temperature at glance before adjusting the thermostat control. It comes with a two year warranty. Replacing and repairing is pretty simple and essay. The product secures its place at number 2nd of our list of The 6 best natural gas pool heaters as well. But it’s a bit noisy. It’s also a very good choice for hot tubs. Low NOx emission. It make it environmentally friendly. In terms of heating effectiveness, the Max-E-Therm is capable of raising pool temperatures by more than one degree per hour. Overall, people have no complaints about the ability of this propane pool heater. If you are looking for a small, durable and compact heater with low operational cost then Max-E-Therm is for you. The product is available in 2390 USD.


  • Comes in matte-black plastic enclosure
  • Takes less space than other natural gas pool heaters
  • Rust proof and made from a unique material called Dura-Glass.
  • Environment friendly and durable with low operational cost.

3. Pentair 460736 Master Pool Heater

Pentair 460736 Master Pool Heater is an adjustable pool heater to suit the size of your pool heating power by adjusting the BTU range(can be varied from 175,000 to 400,000 BTU).It is made with high-quality components and Rust-resistant material. The product has faster pool heating ability. You can choose from variety of designs provided by the manufacturer. So you can choose the model according to your need. Pentair 460736 pool also has universal compatibility to the pools of all sizes. Installation may take a little effort especially when you connect it to water supply. It’s also equipped with highly efficient premixed gas and air system that makes using it quick and simple. This reliable product is available in 1649 USD in the market.


  • Made with high-quality components and Rust-resistant material.
  • Adjustable with less gas emissions.
  • Features a rotating display that helps to make smooth quick adjustments.

4. The Raypak P-R106A

The Raypak P-R106A is a smart, compact above the ground pool heater. The amazing product comes with a diagnostic feature that other heaters lack and it maintains its position at number 4th on our list of The 6 best natural gas pool heaters. It’s the sizable and excellent choice heater for above the ground spas and pools. It’s the only model of raypak pool heater that have all the features of the other big gas heaters. But It runs only on natural gas but not propane. It is sizable and perfect choice heater for above the ground spas and pools. It’s polyester-coated, on-corrosive cabinet is more stable than solvent-borne and waterborne-coated metal cabinets. Its polymer headers stop rust stains from harming your pool or spa’s surface, giving you trouble-free swimming pleasure. The reliable product is available in 2201 USD.


  • Comes with replaceable and serviceable components.
  •  It comes with wind-resistant design help to draft naturally in outdoor installations with its exclusive low-profile design.
  • Fuel efficient and sizable pool heater

5. The Hayward H400

The Hayward H400 is a reliable cupro-nickel heat exchanger that keeps the radiator in its high value while its polymer coupled with a bypass valve which increases its hydraulic efficiency. It’s also take very short time to startup. It can heat up to any required level. It’s also have accurate display panel. But It produces unnecessary noise. This heater has 400,000 BTU can quickly heat 2000 to 4000 gallons. It’s environmentally friendly and produces high power, and it is more efficient with its quick performance. It’s available for 2841 USD.


  • Programmable and easy to use.
  • It features Powerful combustion system.
  • Available in a variety of sizes.
  • Environment friendly.

6. Hayward HP21404T HeatPro Titanium Heat Pump

The Hayward HP21404T HeatPro Heat Pump is a powerful and popular Hayward HeatPro Pump. The amazing product is well known for its quiet operation thanks to an acoustic compressor cover and a scroll compressor for reduced wind resistance and noise. It has 140,000 BTU heating power. It can quickly raise pool temperatures but it’s more expensive than some other types of pool heaters. Its titanium heat exchangers prevent rust and corrosion and provide powerful performance. It’s round design to easily fit through gates and takes up little space on equipment pad.


  • It features an acoustic compressor that helps to reduce the noise level.
  • Made from high quality materials.
  • Corrosion and rust proof.

Top 6 best Natural Gas pool Heaters Buying Guide

You should consider size, efficiency, costs before purchasing a natural gas pool heater because it will help you create the most energy-efficient option when compared to other heat pump and pool heaters.

Sizing a gas pool heater:

Heater is sized according to the surface area of the swimming pool and the difference between pool and the average air temperature also counts. Wind exposure, humidity levels, and cool night temperatures also affect the heating load for outdoor pools.

To calculate the right heater size for your swimming pool you should determine your swimming pool temperature and average temperature for the coldest month of pool use and then subtract average temperature for the coldest month from the desired pool temperature and the result will be the temperature rise needed.

Pool Heater Efficiency & Cost: 

Ratio of usable output to energy input is equal to the heater efficiency. Typically gas pool heaters feature their efficiency percentage on their name plates. Normally, a pool gas heater has 89%–95% efficiency.


Here are some tips on increasing the efficiency of natural gas pool heater:

  1. Proper installation and maintenance of your gas pool heater can increase its efficiency. So it’s better to hire a trained pool professional to perform a proper sizing analysis for your swimming pool to determine pool heater size.
  2. You should consider checking the gas pool heater Efficiency chart before buying a pool heater because heater efficiency is the ratio of usable output to energy input.
  3. Before replacing a gas pool heater you should take a look at Gas Pool Heater Costs and Savings chart because it helps you to determine your annual cost savings with a higher efficiency gas pool heater model

FAQ’s About 6 best Natural Gas Pool Heaters

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

It depends on the capacity and heating power of your pool gas heater. The Natural gas heaters use 1 therm per hour per 100,000 BTUs. An average pool (10-12K Gallon) with no solar cover typically takes 8-14 hours and if you add a solar blanket to your pool during heating it will also reduce the time to heat the pool.

Is gas pool heating expensive?

Several factors will affect your actual pool heater costs because it depends on the prices of gas and the amount direct sunlight on your pool, average temperature in your area and the size of your pool also matters.

How much does it cost to heat a pool monthly?

An average gas heater costs around 200 to 400 USD a month to run. Gas price, area temperature, pool temperature and pool size also affect the cost of gas pool heater.

Can I install a pool heater myself?

Yes you can but it’s recommended to hire a professional to install a pool heater because proper installation and maintenance increases the efficiency of the pool.


Purchasing the right gas heating pool product depends on the various factors that we described above. By simply following the guidelines and proper analysis you can find the right gas heating product for your pool that will be reliable and also helps you to save some money and will serve longer. Before finalizing a gas heater for your pool you should check the technical details and reviews about the product. The 6 best natural gas pool heaters Reviews that we mentioned above will help you to find an ideal gas heater for your swimming pool.

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