Expansion tanks in Beavercreek, OH are necessary when it comes to water heaters. Not many know what expansion tanks are and the critical role they play in water heater safety. A water heater expansion tank is a small secondary water tank that serves as a pressure relief mechanism for a home’s heated water plumbing system. In many closed hot water systems, they’re all that stands between the home’s pipes and water pressure-related damage. At Butler Heating & Air Conditioning, we sell and service these critical safety mechanisms all around the Beavercreek area.