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EXPANSION TANKS

An expansion tank is a small tank attached on the cold water side of your water system that provides a reservoir & allows for thermal expansion that occurs when a water heater is heating your water. Water naturally expands as it heats up. This tank is a safe guard to prevent random jettisoning of water from your relief valve & resulting damage that can occur. With a properly installed tank, the system pressure will be safely maintained saving you money & headaches! An expansion tank is now required when you have a pressure reducing valve.