Hayward® Universal H‑Series H400FDP Propane Pool Heater – 400K BTU, Low NOx

Propane‑fueled pool heater delivering 400,000 BTU with low‑NOx emissions that meet strict air quality standards. Part of the Universal H‑Series, it features a corrosion‑resistant cupro‑nickel heat exchanger, patented header bypass design, and 2" × 2 ½" CPVC union plumbing for easy installation and service. Digital LED controls and efficient hydraulic design help heat in‑ground pools and spas reliably and efficiently while reducing pump run time.