A hot water recirculating system is a pump and valve combination that delivers hot water in an instant to any faucet or bath in your home. The pump is installed at the water heater along with the patented under-sink sensor valve that is installed at the fixture located at the furthest distance from the water heater. This combination creates a pressure differential that allows the cold and cool water in the hot water supply line to "by-pass" (at a low volume) into the cold water supply line through the thermostatically controlled sensor valve, keeping the water in the hot water supply line at a "no-wait" temperature throughout the home. A timer on the pump allows the homeowner to control the time where instant hot water will be used. Are There Different Recirculating Pumps Available?
There Are Several Makes and Models of Recirculating Pumps Available: