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So you are getting ready to purchase a swimming pool heater and want to know which is best for you. This is a common problem for many people because there are so many types of heaters available. We briefly explain each type of swimming pool heater in this article to help you choose the best one for you and your needs, and to therefore allow you to make the best purchase.

Hayward H400FDN 400,000 BTU Pool Heater
As part of Hayward’s popular H-Series, the Hayward 400,000 BTU H400FDN Natural Gas Pool Heater is arguably the best pool heater on the market today. In addition to being energy efficient and environmentally friendly, the H400FDN provides superior hydraulic performance and thermal efficiency.
With an electronic ignition, Cupro nickel combustion chambers for the fastest performance possible, corrosion-resistant heat exchangers, and an easy-to-use LED display and control panel, the Hayward 400,000 BTU H400FDN delivers dependable and lightning-fast performance with a simple touch of a button.

Sta-Rite SR400NA Max-E 400,000 BTU Pool Heater
The Sta-Rite SR400NA Max-E 400,000 BTU Pool Heater is incredibly efficient and features a lightweight and compact design that makes installation a breeze. As a 400,000 BTU natural gas pool heater, it will heat a large pool in mere hours and keep it comfortably warm day and night. Thanks to its reliable design, you can enjoy countless hours of swimming long after the sun goes down all season long.
Built with cutting-edge Dura-Glas technology, the Sta-Rite SR400NA Max-E has a nearly indestructible exterior designed to hold up against harsh outdoor weather conditions and pool environments. Meanwhile, its large LED display and easy-to-use controls make monitoring and adjusting your pool’s water temperature as easy as can be.

Hayward H100ID1 100,000 BTU Pool Heater
Designed for busy home owners with small above ground pools, the Hayward 100,000 BTU H100ID1 features an easy-to-use electronic ignition, FireTile combustion chamber, and induced draft technology to effortlessly heat any pool up to 450 square feet in just a couple of minutes. Furthermore, it’s fairly inexpensive, making it possible for nearly anyone to enjoy relaxing in comfortable 85-degree water throughout the year, even in the brisk spring and fall months.

Zodiac Jandy LXi LXI400N 400,000 BTU Pool Heater
The Zodiac Jandy LXi LXI400N 400,000 BTU Pool Heater utilizes fan-assisted combustion technology to efficiently and consistently heat the coldest of pools, even in stormy or windy conditions. While its low profile design and corrosion-resistant polymer headers make installation a breeze, it’s the heaters electric ignition, cutting-edge digital controls, and built-in diagnostics that really steal the show.
With the ability to alert you when service is needed and let you know when your pool needs backwashing, maintaining a pool and pool heater is easier than ever before. The same intuitive digital display makes it super easy to program as well.

Pentair 460737 400,000 BTU Pool Heater
The Pentair 460737 400,000 BTU Pool Heater features user-friendly digital controls, a rotating digital display, and an electronic ignition for easy operation. It also comes equipped with a high limit switch, water pressure switch, and stack flue sensor, ensuring it never overheats like many of the sub-par models touted in other pool heater reviews.
Utilizing natural gas and capable of providing an impressive output of 400,000 BTUs, the Pentair 460737 is able to quickly heat medium to large-sized swimming pools up to 40,000 gallons, making it a great option for most pool owners in search of the best gas pool heater possible.