This is in a hydronic heating system for a house. The circulator is wired directly to the wall switch which supplies power to the boiler and, as a result, the pump runs constantly throughout the year, even when there is no call for heat.
I see disadvantages to this - electricity consumed by the pump and wear and tear on the pump. Are there any benefits to running the pump constantly?
I am thinking of wiring up the pump so that it only turns on when the thermostat calls for heat.