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Free Backyard Delivery On All Equipment!

Hayward Universal H-Series 400K ASME

Hayward Universal H-Series 400K ASME

$3,300.00 Regular Price
$3,100.00Sale Price

Hayward Commercial Pool's Universal H-Series ASME gas heaters are designed and certified for commercial use. The flagship of our H-Series line encompasses high-end features and construction materials as standard. They combine industry-leading hydraulics, exceptional performance, energy efficiency and reliability, with planet-friendly low-NOx emissions. Flexible connection options make them ideal for new or existing applications. Choose from 250,000, and 400,000, and 500,00 BTU natural gas or propane models.


  • Patented Cupro Nickle Finn Plate™ heat exchanger with bronze header as standard
  • Independent left or right side electric, water and gas connections
  • 2in x 2 1/2in CPVC flanged connections
  • ASME pressure relief valve included as standard
  • Electronic lock-out feature 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
  • Texas Heater Kits Available
  • 500,00 BTU provides unprecedented speak to heat, with just 2 models delivering 1 million BTU’S while using minimal pump room space
  • Product Warranty

    (3) year Manufacturer Warranty



    Same day-Free Backyard delivery to the greater Houston area only.

    We'll give you a call before we arrive and we'll send you a photo upon placing the heater in your backyard.

  • Model # H400FDNASME

    Hayward H400FDNASME Universal H-Series Digital Low NOx Pool Heater; Natural Gas, 400000 BTU, 110/220 V, 60 Hz, 1-Phase, Cupro Nickel

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