While there are a number of different types of heaters that you can use to keep your swimming area warm, some of the best heaters are those that use gas-fired like propane. These heaters can produce a different amount of power, which will determine the amount of water one will heat and how quickly it can heat that water. If you want to save money and prevent damage to the environment, the Sta-Rite SR400NA Max-E-Therm  And Spa if your top choice.

The Sta-Rite SR400NA Max-E-Therm And Spa Heater is the top gas-fired heater because it has a finish made from Dura-Glas, which is a type of thermoplastic resin that is resistant to weather conditions and helps regulate the temperature. As a owner, you can compare this best gas-fired product to others when looking for one suitable for the area.

How to Choose Which One?

Emissions Production

Anytime that you use a device that requires propane, you need to check on the emissions that it produces. Those emissions can damage the environment and make loved ones feel ill. Always make sure that the propane product meets low emissions standards but especially if you live in a state like Texas or California that have specific emissions standards in place.


If you assume that all propane product are exactly the same, you might purchase one that cannot work with the area. Checking the BTU output of it is a great way to see if it will meet your needs. The higher output this product has, the more water it can heat and the faster it can heat that water.

Natural Gas vs. Propane

It’s important that you think about the type of propane that you want to use. Most homeowners will connect their gas-fired products to the propane systems they already have in their homes. Some manufacturers make kits that let you use the products with different systems, but others make this product specifically for use with either natural or propane systems.

Installation Steps

Though you can hire a contractor to install for you, you may decide to tackle the job on your own when you have a day off work. You can usually get an idea of how easily you can install the unit when you read the recommendations from the manufacturer.

Ease of Use

Older propane product for swimming area were quite hard to use and often required that you made a number of manual adjustments. Newer products now have digital displays and settings that you can access almost instantly. If it takes too much time to increase the water temperature or shut off the gas supply during an emergency, you might second guess your purchase.


Top 7 Product Models Reviews

1. Sta-Rite SR400NA Max-E-Therm (Check Price on

Sta-Rite SR400NA Max-E-Therm

With the Sta-Rite SR400NA Max-E-Therm And Spa next to the area, you’ll never again skip taking a dip when you want to because the weather is too cold. This propane product comes with a readout that acts like a display to show you the current temperature of the water, though you can change that temperature to reach the level that you want too.

It also has a control panel that you can adjust to more easily reach those controls.

Designed for use in all climates and weather conditions, this propane-fired product has a thermoplastic resin material called Dura-Glass on the outside that can withstand the heat coming off as well as weather conditions like snow.

You’ll also love the temperature lockout feature, which locks the temperature to a certain setting to eep the water temperature from climbing too high.




2. Raypak 336,000 BTU Digital Electronic Ignition (Check Price on

Raypak 336,000 BTU Digital Electronic Ignition

Whether you want to heat your spa or your swimming area to the perfect temperature, this Raypak 336,000 BTU Digital Electronic Ignition Natural can do the job in a fraction of the time that it would take other units.

The built-in thermostat works with a microprocessor, which lets you pick the exact temperature that you want for the area. This thermostat will then retain that temperature, even if it gets colder outside or you get out of the area for a few hours.

The cabinet used on the outside of this product protects all the internal working components from damage caused by rain or the sun, and most of the components are resistant to rust too.

Thanks to a heat exchanger made from copper, this product will bring water up to temperature faster and regulate that temperature as you swim and play.



3. Pentair 460736 MasterTemp High-Performance (Check Price on

Pentair 460736 MasterTemp High-Performance

Any worries you might have about propane leaks or damage to the environment will disappear as soon as you see this Pentair 460736 MasterTemp High-Performance Eco-Friendly. It produces so few emissions and toxins into the environment that it actually has a certification as a low emissions gas-fired product.

The MasterTemp will also keep your loved ones safe because it has an easy to reach shut off valve that lets you completely shut off the propane supply when problems arise.

A digital display on the front of this product gives you access to all its settings, and this display will actually rotate to help you view it from different angles.

It exterior is resistant to rust, you can use this product all year-round without snow, ice or even the water causing it to rust.



4. Hayward H400FDN Universal H-Series Low (Check Price on

Hayward H400FDN Universal H-Series Low

This Hayward H400FDN Universal H-Series Low NOx 400,000 BTU Natural Residential and Spa is one of the top products from Hayward, which has a strong reputation in the area supply world.

The heat exchanger inside, which uses nickel, is strong enough for heating your water for years and powerful enough that it can heat that water in a few hours or less. It meets all the low emissions standards found in certain cities and states too.

The only buttons that you will ever need for adjusting the propane product have a convenient location right on the front and right next to the digital readout screen.

Though this model does require professional installation, it is easy to operate once installed. Hayward added a conveniently located bypass valve too.




5. TRANE TR250NA Residential and Spa (Check Price on

TRANE TR250NA Residential and Spa

Do you have an older swimming area and worry that installing a new propane-fired product will take too much time and require too many tools and new accessories?

Installing this TRANE TR250NA Residential and Spa Cupronickel is easy because TRANE gave it a retrofit design that lets you connect and use it with even the oldest one. It has a heat exchanger inside that TRANE designed to save energy, and the nickel used in its construction helps it retain heat better.

Guaranteed to meet all low emissions standards, this product will heat the area and reduce the damage that it does to the environment at the same time.

The front of the unit features a digital readout that you can use to keep track of the water temperature and arrow buttons as well as a power button.




6. Hayward H100ID1 H-Series Low NOx 100,000 BTU (Check Price on

Hayward H100ID1 H-Series Low NOx 100,000 BTU

With the Hayward H100ID1 H-Series Low NOx 100,000 BTU Natural Residential and Spa, you will never again worry about toxic emissions because this is a low emissions propane-fired product that meets all low emissions standards.

It is available in both a propane version as well as a natural gasoline fired product. Hayward supplies you with a power cord that will work in a standard 110V outlet too.


Though you cannot view the exact temperature, you can use the temperature knob to adjust the heat of your water. Other features of this gasoline-fired product include an electronic ignition that helps the product come on automatically and a cabinet that stays cool to the touch, even after running for hours.


7. Hayward H250FDP Universal H-Series (Check Price on

Hayward H250FDP Universal H-Series 

If you have a smaller swimming area, you need a smaller unit like this Hayward H250FDP Universal H-Series Low NOx 250,000 BTU Propane Residential and Spa

This won’t increase your energy bills or make you waste gas. Its 150,000 BTU output ensures that the water comes up to temperature faster, but Hayward guarantees that it will meet all emissions standards in your region too because it will not release a lot of toxic emissions.

Whenever you need to adjust the temperature because the ambient temperature changed or because the area feels comfortable, you can access the menu via buttons and a digital readout screen on the front.

Hayward lets you increase and decrease the temperature with the two arrow buttons beside this screen.





Our Winner is…

Sta-Rite SR400NA Max-E-Therm Pool And Spa

The ultimate gas-fired product for residential properties is the Sta-Rite SR400NA Max-E-Therm (Check Price on, which is one of the most energy-efficient models on the market today.

This product has an energy efficiency rating of 84% and can help you save significantly on the cost of heating the swimming area. The Dura-Glass material used on the outside of the case is resistant to all types of weather conditions and suitable for use in all types of climates.

Capable of producing up to 400,000 BTUs, this gas-fired product is also one of the most powerful around. It comes with a control panel that you can position in different ways to use while in or out of the pool and produces less emissions than similar products to prevent damage to the environment.