Water Heater Thermal Expansion Tank
Most of the homeowners in Roswell, GA are not aware that when your hot water heater is heating it builds up tremendous pressure that leads to strain on your water supply lines. This high water pressure build up is bad for your Roswell plumbing just like high blood pressure is bad for you. It will cause old pipe joints or hoses to fail. It causes that nagging drip, drip, drip in faucets. Washing machines, water heaters and dish washers will prematurely break down. Call your Roswell plumber to add a thermal expansion tank if you don’t have one.
Thermal Expansion Tanks Work as a Buffer
Roswell homes probably have a pressure reducing valve on the water service coming into your home to lower pressure. The city may supply water at a pressure of 120 PSI, and a PRV will lower it to 65 to 80 PSI. These can get clogged with sand sediment and minerals, causing pressure regulator failure. Your water heater should have a pressure relief valve on the water heater. When you turn on a faucet, pressure will be equalized.
The plumbing code requires all Roswell homes have a thermal expansion tank with the water heater. Note that tankless water heaters do not require one. The bladder in this tank absorbs or dampens the pressure build up as the water in the tank heats.
Roswell Plumber Resources