ASME Pool Heater, 400,000 BTU, Natural Gas, Induced Draft, Low Nox

The Hayward Universal H-Series Heater is certified for low NOx emissions and meets clear air quality standards. It is an energy efficient, high-performance heater that is ideal for residential spas and pools. The heater features a cupro nickel heat exchanger that is highly resistant to saltwater corrosion.|Patented cupro nickel finn plate heat exchanger with bronze header as standard|Independent left or right side electric, water and gas connections|ASME pressure relief valve included as standard|Easy installation and service via access of single front panel|Easy dual voltage conversion with fuse-protected circuit boards