Best Natural Gas Swimming Pool Heaters of 2025

The Hayward Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater is perfect for in-ground pools and spas up to 400 sq. ft. It offers fast premium heating performance, exceptional corrosion protection, and energy savings. Its low NOx emissions make it an excellent choice for areas where low-NOx emissions are required. The easy-to-use front control panel provides easy operation, service, and maintenance.

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 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 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 Raypak 105,000 BTU Swimming Pool and Spa Heater is perfect for above ground and smaller in-ground pools, as well as spas. It features an easy installation design and a standard 120v 3-prong power cord that can be converted to 220v. Its simple analog thermostat dial allows for accurate temperature setting, while the gas connection is 1/2" NPT and measures 4 5/8" off the ground level. With dimensions of 27.5" H x 12" wide x 24" Deep, this pool heater is both compact and efficient. Please note that it is not available for shipping to California.

The Hayward 135k Heater offers a reliable heating solution for your pool or spa. Its durable cupro nickel heat exchanger ensures long-lasting performance, allowing you to enjoy warm water for years to come. With its advanced hydraulic design, this heater heats your water quickly, so you can spend less time waiting and more time swimming. The electronic panel is user-friendly, making it easy for you to adjust settings without any hassle. Additionally, the heater features a unique water flow management system that optimizes efficiency, ensuring you get the best heating experience while being environmentally friendly with low NOx emissions.

Raypak Gas Heater is a versatile model that allows you to enjoy your pool for a longer season. With 2" water connections, it's perfect for above-ground pools and spas. You can extend your swim season, open your pool earlier, and close it later, making it convenient for your pool maintenance. The Raypak Gas Heater is an excellent choice for above-ground pools and spas, ensuring you can make the most of your pool all year round.

The Raypak Natural Gas Pool Heater is a great choice for in-ground pool owners who want to maintain a precise temperature in their pool or spa. The backlit LCD controls allow for easy temperature setting, and the self-diagnostic microprocessor controlled ignition ensures that you always know what's going on with your heater. The integral fin copper exchanger tube and corrosion-free polymer headers prevent soot and scale build-up, ensuring long-lasting performance. Plus, the heater meets or exceeds all state or federal standards in fuel efficiency.

XtremepowerUS Pool Heater is a high-efficiency electric heater designed for swimming pools and spas. The LED Control Panel allows you to easily monitor and adjust the temperature, saving you time and money. Its profiled fan blade ensures quiet operation while efficiently heating your pool. With a user-friendly front plumbing configuration, installation is a breeze. The durable UV-resistant body panels guarantee long-lasting performance and protection against rust. Enjoy extended swim seasons and luxurious comfort with this convenient and reliable pool heater.

This pool heater (Part No. 009241, Model No. P-R267AL-EN-C) comes with an LCD digital display that accurately shows the temperature, operational status, and service diagnostics. It also has high-wind resistance, ensuring a consistent heating experience.