Mulligan Stew
New Member
I'm choosing whether or not to install a recirculation pump for a standard 50 gallon tank type electric water heater in a one story building, residential. I'd like to start working with 1/2" home runs to fixtures using a distribution block. I'm wondering if this will eliminate the need for a pump since there's more velocity to each fixture than if I was branching off of larger tubing directly from the water heater. Water pressure at the building will be approx 50PSI. Is there a rule of thumb max length for each run before the hot water response is too slow?