HAXHXA1303 Heat Exchanger Hayward H300

This heat exchanger replacement kit contains all parts necessary for the replacement in the Millivolt, ED1, and ED2 styles of H-Series heaters. The heat exchanger features the patented single header V baffle design that allows for a long life, fast heating, and virtually no condensation. They are also protected with the highly resilient Cupro-Nickel material for greater durability and longevity.