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Hydraulically optimized design — delivers maximum flow with lower energy consumption for consistent filtration
its corrosion-resistant housing withstands sun
reliable pool clarity during startup and routine maintenance
and regular use
and fewer chemistry checks—ideal for sun-drenched pools
Lochinvar Energyrite Natural Gas Heater 399K BTU Ern402 ERN402 Hayward Seal Hydraulically optimized design — deliversLochinvar EnergyRite ERN402 Pool Heater 399,000 BTU Natural Gas Intro The Lochinvar EnergyRite ERN402 is a high capacity natural gas pool heater designed for residential pools and light commercial use. With 399,000 BTU h input, it delivers rapid, even heating and dependable performance across seasons. The EnergyRite lineup emphasizes durability, durable heat exchangers, and efficient operation, while offering flexible venting options for both indoor