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Hayward H300FDN Universal H-Series 300,000 BTU Pool and Spa Heater, Natural Gas, Low Nox

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Brand: Hayward

Color: Natural Gas


  • Standard Cupro nickel heat exchanger for superior value and reliability
  • Patented polymer header and bypass valve design for the ultimate in hydraulic efficiency and reliability
  • Hayward Universal design for easy and versatile professional installation
  • Environmentally responsible low NOx emissions to meet or exceed air quality emission standards in all Low NOx regions

Details: From the Manufacturer Hayward H300FDN Universal H-Series Low Nox Natural Gas Pool Heater, 300,000 BTU. The Hayward Universal H-Series gas heater is the "universal" energy efficient remedy for any Newer existing pool or spa. An industry leading hydraulic design reduces circulation pump run time to provide energy savings of up to 18-Percent when compared to less efficient competitors. The energy efficiency of the Universal H-Series gas heater combines with low Nox emissions, a standard Cupro nickel heat exchanger and ultimate installation flexibility on Newer existing equipment pads to responsibly heat a pool or spa today and for years to come. This heater is not operable at altitudes over 2,000 feet above sea level. Installing this heater at high altitude could cause the heater not to operate properly and possibly create a hazardous condition. The manufacturer, Hayward, make a high altitude conversion kit that allows the heater to operate at high altitude. The conversion kit (part number FDXLHAK1930) can be ordered and installed by a qualified service person.