July 11, 20197 yr Our DHW loop has three showers on it - one with an integrated pump, fed from a cold and hot water tank, and two with an external pump for which the pump turns on when water is drawn through it. These are also fed from a cold and hot water tank. I want to fit a recirculation pump to the DHW circuit. Is it ok to have more than one pump working at once? This sounds wrong to me...
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