Watts 500800 Instant Hot Water Recirculating System with Built-In Timer, Easy to Install WATTS HOT WATER RECIRCULATING PUMP: Provides hot water at every faucet or shower when needed, eliminating wasted water BEST SELLER RECIRCULATING SYSTEM: Conserve Water - Up to 15,000 gallons of water per year. Save Money - Up to 10% of your water bill and its cost only 5 a day to operate EAST TO INSTALL: This unique product connects easily to existing plumbing. Easy to install in less than 1 hour. And it is maintenance free WATTS HOT WATER RECIRCULATING SYSTEM: The Kit Includes: Pump with timer, 2 adapters with rubber washers, valve mounting screws, sensor valve, two 12-inch supply lines RECIRCULATING PUMP WITH TIMER: 24-hour programmable timer activates pump when you need it. And it is extremely quiet compared to other system in the market - no vibrations. Do not use with tankless water heaters. Insert the 115V plug on the line cord from the pump into a properly grounded 115V outlet