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.
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You couldn’t be more right but some people ignore it and pay the price. It is so important to check your expansion tank annually just Google it it’s simple.