Hot Water Recirculation is a practical and cost effective method of saving water. No more waiting for the hot water to reach your sink while wasting 2-3 gallons of water down the drain. Hot Water Recirculation can save you between 12,000 and 38,000 gallons of water each year, by simply making hot water available immediately to every faucet in your house. Imagine the savings - to your wallet AND to the environment.