Taco’s TacoGenie delivers hot water to faucets and taps, on command, 24 hours a day. It is a silent pump that attaches to the hot and cold water lines. Cool water that normally escapes down the drain is recirculated back to the water heater. When hot water arrives at the faucet, its heat sensor and control board shut off the circulator to prevent excess hot water from entering the cold water line. It works with tank-type or tankless water heaters.