Guest
Pump is usuly recomended.Put pump on return side of last fixture, between the last fixture and the check valve , usuly next to water heater. Pumps can be bought at a plumbing supply or from a plumber. The size of the pump; for res. use usuly a small one will work just fine. Usuly one of 1/3 or 1/4 horse power is more than rnough, 115 volt.
