A re-circ system (recirculating system) continuously circulates hot water in the water piping system to provide nearly instant hot water. This is especially useful for ranch homes or any time your fixtures are a long way from the water heater. The value of a circulating system is based on the time it takes for your fixture to get hot water and how much water is wasted waiting. Modern circulating pumps offer electronic timers and thermostats to monitor and maintain the circulating system. By installing a recirculating system, you could save water, money, and time.