Apr 4, 2017 ... A hot water recirculating pump can be used to provide instant hot water to showers and faucets when it is needed most, without wasting water ...
This Old House plumbing and heating expert Richard Trethewey delivers hot water on demand.
Hot water recirculation pumps can be located either at the water heater itself, or at a point ... This type of installation is more common in new buildings. ... is sensed at the pump , the circulation is shut off before hot water fills the cold water line.