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Watts (500800) Instant Hot Water Recirculating System

Product Code F500800

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Premier's Instant Hot Water Recirculating System is a pump and valve combination that delivers hot water in an instant to any faucet or bath in your home. It uses the pump at the water heater along with the patented under-sink sensor valve installed furthest away from the water heater. This combination creates a pressure differential that allows the cold and cool water in the hot water supply line to "by'pass" (at a low volume) into the cold water supply line through the thermostatically controlled sensor valve, keeping the water in the hot water supply line at a "no-wait" temperature throughout the home. The timer on the pump makes it more efficient during downtime.

How Much Water is Wasted Waiting for It to Get Hot?


  • An average home has approximately 125 ft of 3/4 inch piping.
  • 125 feet of 3/4" pipe holds 3.14 gallons of water.
  • 10 draws per day wastes over 31 gallons of water waiting for the water to get hot.
  • Over a year, the wasted water equals 11,461 gallons.


  • Works with any standard hot water tank heaters and tankless hotwater systems*.
  • *May not work with a tankless water heater check you tankless water heater manual for details.


  • Home and Business applications.


  • No return line required
  • No electricity needed under the sink
  • Built-in 24 hr, 3 position timer with 10 ft cord and 115v plug
  • Uses less energy than a 25 watt light bulb
  • Thermal By-Pass Technology
  • Saves up to 12,000 gallons per year
  • Maintenance Free


  • Connector 3/4 in
  • Power 115V

NOTE: This system is not designed for Tankless water heaters.



Imagine the luxury of having hot water instantly at your fingertips without the long wait or wasted water. Thanks to innovative technology, the Watts (500800) Instant Hot Water Recirculating System makes this a reality. In this in-depth guide, we will explore the features and advantages of the Watts 500800 system, offering a comprehensive understanding of how it can transform your daily water usage experience.

The Watts 500800 is a cutting-edge solution designed to provide hot water on demand, eliminating the need to wait for the water to heat up. This recirculating system is known for its efficiency, ease of installation, and energy-saving capabilities.

At the heart of the Watts 500800 system is its powerful pump technology. The system utilizes a pump to circulate hot water through the plumbing, ensuring that hot water is readily available at every faucet in your home.

 The system comes equipped with a user-friendly timer control, allowing you to program the recirculation based on your usage patterns. This feature ensures that hot water is available precisely when you need it, optimizing energy efficiency.

Installing the Watts 500800 is a hassle-free process. The system is designed for quick and straightforward installation, making it suitable for both professional plumbers and DIY enthusiasts. The ease of installation minimizes downtime and ensures a swift transition to a more convenient hot water system.

 One of the standout features of the Watts 500800 system is its focus on energy and water conservation. By reducing the time it takes for hot water to reach your faucets, the system minimizes water wastage and decreases the energy required to heat the water.

The primary benefit of the Watts 500800 system is the instant availability of hot water. Say goodbye to waiting for the water to warm up, especially during those cold winter mornings. The system ensures that hot water is ready when you turn on the tap.

Traditional hot water systems often result in water wastage as users wait for the water to heat up. With the Watts 500800, the recirculation process minimizes this wastage, contributing to a more environmentally conscious water usage routine.

By reducing the wait time for hot water, the Watts 500800 system also enhances energy efficiency. It optimizes the operation of your water heater, reducing energy consumption and, consequently, lowering your utility bills.

The timer control feature allows you to customize the operation of the recirculating system based on your daily routines. This not only adds to the convenience of the system but also ensures that it operates efficiently when needed, further enhancing energy savings.

Homeowners can benefit significantly from the Watts 500800 system, especially in larger homes where it typically takes longer for hot water to reach certain faucets. The system ensures that every part of the house has instant access to hot water.

Restaurants, hotels, and other commercial establishments that require a consistent and immediate supply of hot water can integrate the Watts 500800 system into their water heating infrastructure. This is particularly advantageous in settings where customer satisfaction is a priority.

In multi-story buildings or structures with complex plumbing systems, the Watts 500800 system is instrumental in overcoming the challenges associated with hot water distribution. It ensures that hot water is available quickly at every level.

The Watts (500800) Instant Hot Water Recirculating System is a game-changer in the realm of water heating technology. Its efficient pump, user-friendly timer control, and emphasis on energy and water savings make it a standout choice for those seeking instant hot water convenience.

As you explore ways to enhance the efficiency and convenience of your hot water system, consider the transformative benefits offered by the Watts 500800. Its ease of installation, energy efficiency, and customizable features make it a practical and sustainable solution for both residential and commercial applications. Upgrade your water heating experience with the Watts 500800, and enjoy the luxury of instant hot water at your command.