Frequently Asked Questions

As water is heated, it expands. Due to the fact that water is not compressible, a rapid increase of pressure in the water heater and throughout the entire plumbing system results. This increase in pressure is known as thermal expansion, occurring every time your water heater heats water. Not having a pressure safety tank could potentially cause water leaks derived from the water pressure.

The water heater safety tank eliminates the thermal expansion problem by controlling maximum pressure, and providing the additional space needed to accommodate the increased volume of water.

Any home improvement store.

As pictured below, the pressure safety tank should go on the cold water side, by the hot water heater.