This Stiebel Eltron Whole House Tankless Electric Water Heater delivers an endless supply of hot water for your entire house, plus helps save energy and reduce your electric bills. Water is heated only as it is used - no more wasting energy storing hot water. No venting is required, allowing greater flexibility when selecting the best place for installation. Plus, this efficient water heater features a compact design requiring less space than conventional tank heaters. Capacity: Tankless, Typical Application: Water heater, Mounting Hardware Included: Yes, Battery Included: No, Battery Required: No, Dimensions L x W x H (in.): 4 3/5 x 14 1/2 x 16 3/5, Dimensions D x H (in.): 4 3/5 x 16 3/5