Matt Chesmore
Usedandabused
I am getting 2 new 55 gal water heaters installed in conjunction with a geo thermal heating system and it is my job to plumb them. I have a 3/4" supply so I'm guessing that's what I will need to supply the water heater with, however can a upsize to 1" coming out hot and back to the PEX manifold or will upsizing it be irrelevant ?