The GE Platinum GG40S08BXR RealMAX Series gas hot water heater features an 8 year tank and limited parts warranty. GE's RealMAX Series include features like Real Capacity which means their tanks hold what they say they will hold. For example the GG40T08BXR will hold 40 gallons of hot water. They also feature a best-in-class performance that delivers great First Hour Rating. With the GG40S08BXR you will get up to 78 gallons (Measured through DOE First Hour Rating) of hot water in the first hour of use. The 38,000 BTU burner allows for maximum performance to quickly aid in replenishing the hot water in your tank. Rest assured that this large 40 gallon hot water heater will provide sufficient hot water for the whole family. It is intended to be used for households between 2 and 4 people. Temperature settings range from 45° to 160°.