Hayward H400FDN Universal H-Series 400,000 BTU Pool and Spa Heater Natural Gas

The Hayward H400FDN Universal H-Series 400,000 BTU Pool and Spa Heater in Natural Gas offers top-notch performance and efficiency for your pool or spa. With a standard Cupro nickel heat exchanger and a patented polymer header and bypass valve design, this heater ensures superior value and reliability. Its Universal design allows for easy professional installation, while its low NOx emissions make it environmentally responsible, meeting or exceeding air quality emission standards in all Low NOx regions. Enjoy a comfortable and eco-friendly pool or spa experience with the Hayward H400FDN heater.