Independent, evidence-based evaluations of pool heater equipment to help you compare options, understand long-term ownership,
and make more confident decisions.
Browse the latest heater evaluations. Each evaluation includes scoring, technical analysis, and field experience commentary.
Coverage: H150 / H200 / H250 / H400 / H500 — NG & LP
The Hayward Universal H-Series is a forced-draft gas pool and spa heater family available in natural-gas and propane configurations. Current models range from approximately 150,000 to 500,000 BTU and use cupro-nickel heat exchangers for added resistance to corrosion and demanding water conditions.
Coverage: HDF275 / HDF400 | Standard & OmniX Configurations
The Hayward Universal HC Series is a compact dual-fuel gas heater family offered in 275,000 and 400,000 BTU sizes. Both use 84%-efficient cupro-nickel heat exchangers, premix low-NOx combustion, reversible plumbing, and field-convertible natural-gas/propane operation. Current OmniX variants add connected controls and app-based monitoring while retaining the same core HC heating platform.