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 36000 Btu/hr propane burner, the GS6-30-ORBT (LP) atmospheric vent deliver a first hour rating of 78 gal and a recovery rate of 36 gph. With an 0.65 Uniform ENERGY FACTOR®, this water heater is not ENERGY STAR® certified. It carries a 6 years limited tank warranty and meet Low NOx emission requirement.