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Water Safety & Flow Control

Where to Buy Series 500800
series 500800

The Watts Instant Hot Water Recirculating System is available at these fine retailers: Click the logos below.

Instant Hot Water Recirculating System with Built-In Timer

Have you ever had to wait for hot water to reach your faucet or shower? Think of how much time and water is wasted every time you do this. Now there is a solution, the Watts Hot Water Recirculating System that provides instant hot water to every faucet or shower in a home when you need it. Stop throwing money down the drain and waiting for your hot water.

This unique product connects easily to existing plumbing.


  • Instant hot water to every faucet or shower
  • Save up 15,000 gallons of water per year and up to 10% on your water bill
  • Easy to install in under one hour


How it works

1 step 1 image

A pump with a built-in timer is installed on the hot water line from the water heater.

2 step 1 image

A patented sensor valve opens when the water on the hot water side cools and pushes the cool water back to the water heater.

As the temperature in the hot water line hits 98º the valve closes.

3 step 1 image

Some homes are designed with multiple hot water loops, one per floor, etc. If one section of the house does not receive hot water, you will need to purchase a Watts Sensor Valve Kit for each loop.

For best results, the valve should be located at the faucet furthest from the water heater in each loop.

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