Watts Hot Water Recirculating System with Built-In Timer. Never wait for hot water again! The Watts Hot Water Recirculating Pump provides hot water at every faucet or shower when needed, eliminating wasted water. It is easy to install on any water system and requires no additional piping. The unique design of the pump ensures quiet, maintenance-free operation. The system includes a built-in 24 hour, dual setting programmable timer to activate the pump only when needed. Tired of running your faucet or shower waiting for hot water? This recirculating system provides hot water at every faucet or shower when you need it and eliminates water waste. Easy to install on any water system without additional piping. Saving your household money and thousands of gallons of water waste per year. The unique design of the pump ensures quiet, maintenance-free operation. System includes a 24 hour programmable built-in timer to activate the pump only when you need it.