Water heaters last about eight to 12 years. A thermal expansion tank reduces wear on the heater and can prevent a tank blowout, potentially extending its life.

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 ...

That is an expansion tank installed on the water supply pipe to the water heater. Its purpose is to deal with thermal expansion of water as it heats up in the water heater […] Skip to content.

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 ...

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.

According to water-heater manufacturer Bradford White Corp., a thermal-expansion tank is a small, pre-pressurized tank with a compressible air cushion (a diaphragm) that is installed on the supply ...

According to water-heater manufacturer Bradford White Corp., a thermal-expansion tank is a small, pre-pressurized tank with a compressible air cushion (a diaphragm) that is installed on the supply ...

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.