Product Description

Lochinvar EnergyRite™ Natural Gas Pool Heater | 399K BTU | ERN402
High-Efficiency Heating for Residential and Commercial Pools

The Lochinvar EnergyRite™ ERN402 is a 399,000 BTU high-efficiency natural gas pool heater, engineered for powerful, reliable performance and long-term durability. Designed for both residential and light commercial applications, this heater features cutting-edge combustion technology and corrosion-resistant components, delivering industry-leading energy efficiency and extended service life.

Key Features:

• ✅ High Output Heating – 399,000 BTU/hr capacity ideal for large pools or fast recovery

• ✅ Energy Efficient – Operates at up to 88% thermal efficiency, reducing fuel costs

• ✅ Durable Cupro-Nickel Heat Exchanger – Resists corrosion from chemically treated water

• ✅ Advanced Digital Control Panel – Easy-to-read display with diagnostics and temperature control

• ✅ Low NOx Certified – Environmentally friendly and compliant with air quality regulations

• ✅ PVC Direct Vent Compatible – Flexible venting options for indoor or outdoor installations

• ✅ Fully Serviceable Design – Simplified access for maintenance and component replacement

Specifications:

• BTU Input: 399,000

• Fuel Type: Natural Gas

• Model Number: ERN402

• Vent Type: Direct Vent or Outdoor

• Application: Pools and spas (residential or commercial)

• Ignition: Electronic, fully automatic

• Weight: Approx. 265 lbs

Whether you're heating a residential backyard pool or a commercial swim facility, the Lochinvar ERN402 delivers dependable, high-efficiency performance—engineered to keep your water warm and your operating costs low.

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