Expansion Tanks

An expansion tank is a small tank connected to your water heater that absorbs excess pressure caused by thermal expansion. When water heats up, it expands — and in a closed plumbing system, that pressure has nowhere to go. An expansion tank prevents this pressure from damaging your water heater, pipes, and fixtures.

Common signs include water dripping from the T&P relief valve on your water heater, the expansion tank feeling heavy or full of water when tapped, visible corrosion or rust on the tank, and unusually high water pressure readings. If you notice any of these signs, call us for an inspection.

Most expansion tanks last 5-10 years. The lifespan depends on water quality, system pressure, and usage. We recommend having your expansion tank inspected annually as part of routine water heater maintenance to catch issues before they become problems.

The cost varies based on tank size and installation complexity, but expansion tank installation is generally very affordable — especially compared to the cost of water damage from a failed system. We provide free, upfront estimates so you know exactly what to expect before any work begins.

Yes! If your expansion tank has failed and you're experiencing leaks or pressure issues, we offer emergency service to get your system protected quickly. Give us a call anytime and our licensed plumbers will be there to help.