The ProLine® Standard electric water heater is a reliable 40 gal water heater choice when you are looking to maximize your hot water output and is designed with environmentally-friendly insulation to reduce standby heat loss. With a 38 gal (nominal) tank producing 6000 W, the EN6-40-DOLBS delivers a first hour rating of 47 gal and a recovery rate of 21 gph. With an 0.93 Uniform Energy Factor, this water heater is not Energy Star® qualified. It carries a 6-year limited tank warranty.