The Lochinvar EnergyRite 399,000 BTU Natural Gas Pool/Spa Heater delivers commercial‑grade heating performance in a compact, service‑friendly package designed for residential and light‑commercial pools and spas. Built with a rugged copper‑fin heat exchanger and a fully fan‑assisted combustion system, the EnergyRite series provides fast recovery, stable temperature control, and dependable efficiency throughout the swimming season.
Engineered for long‑term reliability, the 399K model features electronic ignition, digital temperature controls, and a sealed combustion chamber optimized for consistent outdoor operation. Its durable construction and high‑output design make it ideal for large pools, spas, and high‑demand aquatic environments requiring steady, powerful heating. With straightforward installation and easy service access, the EnergyRite 399K Natural Gas heater is a strong solution for both new builds and replacement applications.
We service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:
Nassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale
Suffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley
Contact us today at (631) 779-3196
