The new Universal H-Series gas heaters are made for commercial use. Like the rest of our h_series line, they combine industry leading hydraulics, exceptional performance, energy efficiency, and reliability with planet-friendly low-NOx emmissions.
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ASME Heater

The Hayward Universal H-Series ASME gas heater is the universal energy efficient remedy for any new or existing semi-commercial pool or spa application. An industry leading hydraulic design reduces circulation pump run time to provide energy savings of