The price of a 2-4.4 water heater expansion tank on its own ranges from $40 to $200, and the cost of labor can fall anywhere between $50 and $150, depending on your area and the location and ...

When a water heater is connected to a closed system, an expansion tank must be installed to prevent excessive pressure caused by thermal expansion. By hominspector September 26, 2017 at 11:10AM ...

If you've had your water heater replaced in the past 10 years you've probably noticed in addition to purchasing a new water heater your plumber informed you an expansion tank or valve was needed.

A reader writes in to say he bought a water heater and expansion tank and had them installed by someone who was not a licensed plumber.The expansion tank was mounted horizontally — just hanging ...

Many water heaters feature an expansion tank to protect the system. Here's what a water heater expansion tank does and how you know if your system needs one.