Hayward Universal H Series

The Hayward H series of gas pool heaters includes the Universal H series of low NOx electronic heaters and the H Series Millivolt heaters:

The Hayward Universal H Series is a series of pool and spa heaters ranging from 150K to 400K BTU/hr with versions for either natural gas or propane. The key benefit of these heaters is their energy efficiency and low NOx emission levels which comply with all current California and Texas air quality emission standards.

The Hayward Universal H-Series heaters feature an industry leading 83%-84% thermal efficiency and this plus the low NOx emissions make these heaters about as environmentally friendly as a gas heater can be. This energy efficiency is achieved through the use of an insulated fire tile combustion chamber which minimizes heat loss and maximizes the heat output for every BTU used.... Click Here to read more.