[New Englander]

Originally Posted by Bill14564

There are two tanks, the hot water tank and the expansion tank. The expansion tank is small, about 15 inches high, and attaches to a single water line, usually above the hot water tank.

The expansion tank contains a bladder. The bladder cannot be replaced, if it goes bad then the entire expansion tank needs to be replaced.

The hot water tank does not need to be replaced if the bladder in the expansion tank goes bad.