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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:
- A basic “always on” recirculating pump that uses the same amount of energy as a 40 watt light bulb.
- A recirculating pump with a timer allows you to set times when the system is to be on for peak use and efficiency.
- An “on demand” recirculating pump is designed with a remote control that is pushed any time you want to circulate hot water through your system. This type of pump shuts off when it senses that the water at the faucet farthest away from the heater has reached the appropriate temperature (approximately 10 – 15 seconds after you start the pump, depending on the size of the house.)
- Recirculating Pump designed for tankless water heaters. This unit is designed for use with tankless water heaters and is similar in function as the recirculating pump with timer listed above.
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