hokieamonglions
New Member
I am trying to get some background information on whether an expansion tank is needed when a gas tankless water heater unit is being installed.
Currently I have a 40 gallon tank gas hw heater and investigating its replacement with a Navien 210A gas unit (in a different placement in my basement). The tank unit has an expansion tank on the cold inlet (as would I expect) but what about tankless units? Do they need them, and should I have one installed with a tankless replacement.
Thanks,
-hokie
Currently I have a 40 gallon tank gas hw heater and investigating its replacement with a Navien 210A gas unit (in a different placement in my basement). The tank unit has an expansion tank on the cold inlet (as would I expect) but what about tankless units? Do they need them, and should I have one installed with a tankless replacement.
Thanks,
-hokie