About the Grundfos UP1518B5 (59896114) Pump, 1/2" Sweat End Open System Circulator, 1/25 HP 115V BronzeThe Grundfos UP1518B5 (59896114) Circulator Pump for hot water saves money, saves water, and saves time The average home wastes over 11,461 gallons of water per year due to unnecessary wait for hot water to reach showers and faucets. In typical plumbing, water is pumped from the water heater through the pipes to the tap. Once the water is turned off, the remaining water in the pipes cools and the wait for hot water occurs the next time the tap is turned on. The Series UP 59896114 pump attaches to the water heater through the hot water pipe and constantly circulates hot water through the pipe from the heater to the tap. They water in the pipe is always hot and no water is wasted; never wait for hot water again.For use with circulation of hot or cold water in domestic hot water recirculation, cooling and air conditioning systems, heating systems with nonoxygen barrier tubing applications.