Expansion Tank Location
I have a 50gal hot water heater and a brand new PRV between the house and the street. The pressure in the system (when checked at a hose bibb in the laundry room) goes from 45psi to 135psi while the hot water heater heats the water. I have been told to install an expansion tank in the system.
My problem is that the room is very small and there is not enough space to install the tank on the infeed (cold) side of the hot water heater.
Is it OK to install the expansion tank on another cold water line in the house where there is adequate room?