Best Natural Gas Swimming Pool Heaters of 2026

The Pentair EC462025 MasterTemp Natural Gas Pool and Spa Heater is a compact and efficient heater designed for smaller bodies of water up to 15,000 gallons. With 125,000 BTUs, this pool heater will keep your pool at the perfect temperature so you can always enjoy pool time. Thanks to its thoughtful, user-friendly design, this pool and spa heater is easy to operate and monitor. The rotating digital display allows for any installation rotation and is easy to read, while the user-friendly indicator lights allow for simple system operation and monitoring. Additionally, this swimming pool heater is equipped with safety features that prevent overheat, auto shut-off when the temperature exceeds factory limits, and manual shut-off for servicing. Certified for Low NOx emissions, this pool heater is a reliable and efficient choice for any pool owner.

The Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater is a versatile and efficient solution for various weather conditions. With intermittent spark ignition pilot safety controls, the pilot only comes on when there is a call for heat. Made of space-age material, the heater won't retain residual heat after it is turned off, making it easy to install without costly metal heat sinks. Please note that this item cannot be shipped to California.

The Hayward W3H400FDN Natural Gas Pool and Spa Heater is ideal for in-ground pools and spas up to 1,200 sq. ft. with natural gas availability. It delivers fast and reliable premium heating performance. Its exceptional corrosion protection ensures long-lasting durability. The efficient design saves energy while the intuitive front control panel makes it easy to use and maintain.

This swimming pool heater features a cupro-nickel gas design that can heat up both pools and spas, ensuring that you can enjoy a relaxing swim regardless of the weather. Its pagoda design provides much-needed protection against harsh weather conditions. The heater is also equipped with a microprocessor-controlled thermostat, ensuring that the temperature remains consistent throughout your swim.

The Raypak Gas Pool Heater is designed with polymer headers to prevent rust stains, an all-copper-fin-tube heat exchanger for efficient heating, and the ability to operate smoothly in various weather conditions. This heater doesn't need fans to handle drafting issues, ensuring uninterrupted heating. The polymer headers protect your pool or spa surface, while the copper heat exchanger delivers consistent heating performance. You can rely on this heater to work effectively even in challenging weather conditions, providing you with hassle-free heating for your pool or spa.

The MasterTemp Pool Heaters are a reliable and efficient choice for heating your swimming pool. With their tough rust-proof exterior, these heaters are built to last, ensuring long-term durability. The premix combustion technology allows for fast and efficient warm-ups, so you can enjoy comfortable swimming temperatures in no time. The built-in safety features provide system protection, giving you peace of mind while using the heaters. Additionally, the rotatable and intuitive operation controls make it easy to use and adjust the temperature according to your preferences. Certified for both outdoor and indoor installation, the MasterTemp Pool Heaters offer convenience and versatility for any pool owner.