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    Hayward Universal H-Series ASME Gas Heater

    Hayward Universal H-Series ASME Gas Heaters are designed and certified for commercial use. This heater incorporates high end features and construction materials. They combine industry-leading hydraulics, exceptional performance, and energy efficiency and reliability, with environmentally friendly low NOx emissions. Flexible connection options make them ideal for new or existing applications.


    • Digital control panel
    • Patented Cupro-Nickel heat exchanger with bronze header
    • Independent left or right side electric, water and gas connections
    • 2 X 2-1/2 in. CPVC plumbing fittings
    • ASME pressure relief valve included
    • Electronic lockout prevents unauthorized access to configuration settings
    • Easy installation and service via access of single front panel
    • Easy gas valve adjustment
    • Easy dual voltage conversion with fuse-protected circuit boards
    • Low profile 24 inch height cabinet
    • Forced draft impervious to wind and weather
    • Non- corrosive feet means no rust-corrosion on wet floors/pads
    • Suitable for saltwater pools
    • Silicon Nitride hot surface ignitor for dependable lighting & reliable operation
    • Available in Natural Gas and Propane models
    • Indoor vent kit available

    NOTE: These heaters are ASME certified for commercial use. Please refer to your building code for heater requirements.

      • Item: # E5990 Universal H-Series 250K BTU ASME
        Natural Gas
      • Item: # E5994 Universal H-Series 400K BTU ASME
        Natural Gas
      • Item: # E5992 Universal H-Series 250K BTU ASME
      • Item: # E5996 Universal H-Series 400K BTU ASME
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