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The Top 3 Hot Water Recirculation Loops and Pumps

A Comprehensive Review of the Leading Hot Water Solutions for Your Home

recirculation Pump Hot waterHot water recirculation systems have become increasingly popular among homeowners seeking instant hot water and improved energy efficiency. A well-designed hot water recirculation loop and pump can save time, water, and energy by circulating hot water through a closed loop, providing hot water at the tap almost immediately. In this article, we will review the top 3 hot water recirculation loops and pumps available on the US market today.

Grundfos Comfort System:

Grundfos is a leading global manufacturer of pumps and pumping solutions, and their Comfort System is one of the best-selling hot water recirculation systems available today. The Grundfos Comfort System includes a UP15-10SU7P TLC circulator pump and a valve kit that can be installed at the furthest fixture in the loop.

Key Features:

  • Easy installation: The Comfort System does not require a dedicated return line and can be easily retrofitted to an existing plumbing system.
  • Timer and thermostat control: The pump features an integrated timer and thermostat, which allows homeowners to program the pump to run only during peak usage times.
  • Energy-efficient: The UP15-10SU7P TLC circulator pump consumes just 25 watts of power, making it one of the most energy-efficient pumps on the market.

Watts Premier Instant Hot Water Recirculating System:

Watts Premier is a well-established brand known for its reliable and high-quality plumbing solutions. Their Instant Hot Water Recirculating System features a 500800 hot water recirculating pump and a pair of sensor valves, which are installed at the furthest fixtures in the loop.

Key Features:

  • Easy installation: Like the Grundfos Comfort System, the Watts Premier system does not require a dedicated return line and can be retrofitted to an existing plumbing system.
  • 24-hour programmable timer: The system includes a built-in 24-hour programmable timer, which allows users to customize the pump’s operation to fit their specific needs.
  • Maintenance-free: The pump features a maintenance-free design, ensuring long-lasting performance and minimal upkeep.

Laing AutoCirc E10:

The Laing AutoCirc E10 is a high-quality, energy-efficient hot water recirculation pump designed for tankless water heaters. This unique pump features a built-in temperature sensor that detects when hot water is needed, activating the pump to circulate hot water through the loop.

Key Features:

  • Compatibility: The AutoCirc E10 is specifically designed for use with tankless water heaters, making it an ideal choice for homeowners with these systems.
  • Energy-efficient: The pump consumes only 33 watts of power and features a built-in thermostat to minimize energy usage.
  • Quiet operation: The Laing AutoCirc E10 is known for its quiet operation, which ensures a peaceful home environment.


When choosing a hot water recirculation loop and pump, it’s essential to consider factors such as energy efficiency, ease of installation, and compatibility with your existing plumbing system. The Grundfos Comfort System, Watts Premier Instant Hot Water Recirculating System, and Laing AutoCirc E10 are all top-quality options that can provide instant hot water, save water and energy, and improve the overall comfort of your home.

Plumbing a Hot Water Recirculation loop

About Fry Heating & Cooling: A fully licensed and certified contractor in the Heating, Cooling, and Plumbing industry, ardently adheres to a Christ-centric organizational philosophy. Our faith-based foundation guides us in every aspect of our operations, driving us to serve our regional market with dedication, compassion, and integrity. We are steadfast in our commitment to providing Fast, Friendly, and Fair services to all our clients, ensuring prompt responsiveness, exceptional customer engagement, and equitable pricing. Our standards of professionalism and goodwill reflect our aspiration to honor our faith in our daily conduct, while exceeding the expectations of our customers.

At Fry Heating & Cooling, our team of certified technicians specializes in a comprehensive range of HVAC, plumbing, and commercial RTU services, including installation, repair, and maintenance of air conditioning systems, furnaces, heat pumps, indoor air quality products, plumbing systems, commercial rooftop units and generators. With a legacy of excellence and a commitment to customer satisfaction, we are your one-stop solution for all your indoor comfort needs.

Fry Heating & Cooling is proud to service the top 10 residential HVAC OEMs delivering unparalleled customer satisfaction and industry-leading expertise. As a premier HVAC contractor, we specialize in servicing and installing top-rated brands such as CarrierTrane, Lennox, Goodman, RheemYork, Daikin, American Standard, Bryant, and Amana. 

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