The ProLine® series Gas Water Heater is designed to deliver an economical performance that can lower your energy bill and also provide long lasting value. Featuring a 30 gal (nominal) tank and a 32200 Btu/hr gas burner, the GSX-30-OCSR atmospheric vent deliver a first hour rating of 55 gal and a recovery rate of 32 gph. With an 0.60 Uniform ENERGY FACTOR®, this water heater is not ENERGY STAR® certified. It carries a 10 years limited tank warranty and meet Low NOx emission requirement.