Quote:
Originally Posted by TVJim
You DO NEED the expansion tank, there is a check valve in the line between your house and the street. When the water heater cycles the expansion tank suppresses the pressure of the expanding heated water.
Have a plumber change out the expansion tank and replace all the shutoff valves while they are there.
|
I agree. Note that if you don't have an expansion tank, when you replace your water heater, you should pay the extra money to have the plumber install one. And, if you are getting competitive quotes, some plumbers will include the expansion tank, and some will not. You need to ask, so you are comparing "apples to apples" in the quotes. Even though the code requires an expansion tank for new installs, some plumbers will not automatically install one. They will claim that they are doing a "repair", not a new install, so the code requirement does not apply. This is a gray area loophole in the code.