On-demand hot water recirculating pumps work with one key difference: your water isn’t constantly recirculating, and you save energy and money.

When water sits in a pipe, it begins to drop in temperature from heat loss, quickly matching the temperature of the pipes. Therefore, typical recirculation systems constantly run water through the pipes to keep them heated. When the water is recirculated through the system, it doesn’t get a chance to cool down, offering a constant flow of hot water. However, there are some drawbacks to this.

If you’re not sure which pump is right for your home or business, please read our article “Hot Water Recirculation Pump Recommendations: What’s Best for Your Situation” to help you ensure you’re installing the best pump to deliver hot water with the speed and volume you expect from your new or existing plumbing.

Our controllers can be used simply as an on-demand controller for your recirculation pump or, once configured using either an iPhone, iPad, or Android smart device; it can be configured via timers to keep the recirculation loop hot between specific times of day and on specific days of the week (up to 10 timers can be set).

Basically saved my wallet! Gas bill went from over $100 to $32.00 in the first month. No more worrying about the pump running all the time and what damage maybe occurring to plumbing and fixtures, not to mention just wasting energy like crazy. Best investment I’ve made and hot water on demand. Love it!

✓ No dedicated recirculation loop✓ Tank or Tankless water heater✓ Multiple dead-end lines✓ For use with existing AquaMotion or similar high-flow thermostatic crossover valves✓ Satisfies CA Title 24 Requirements

... Timer. Your instant hot water recirculating pump has a timer on it, if that timer ring is not set to the current time of day you will not receive instant hot ...

Do you want to calculate the cost savings of using on-demand Smart Recirculation Control for your hot water system? →Download our spreadsheet to calculate your savings and environmental impact.

When you want hot water, simply turn the faucet on then off, wait a few seconds and the system sends the hot water to your faucet.

Brilliant. Amazing. I installed this unit to replace a wireless remote control.  Sometimes it got the signal, sometimes not. Now there is no doubt. Simply turn on any hot water tap in the house and the pump starts.

Constantly running hot water can also cause copper pipes to erode. This can lead to pinhole leaks in your pipes, which will then need replacement, as well as cause water damage to your home.

✓ No dedicated recirculation loop✓ Tank or Tankless water heater✓ Use with Watts – Grundfos – Taco thermostatic systems✓ For better on demand performance use Smart Thermostatic Control Complete System

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If you have a circulation pump installed, you don’t need to replace it – we have controllers to turn your system into a smart hot water recirculating pump. With a combination of smart timer technology, you’ll never have to worry about high water or energy bills from your hot water system again.

On-demand recirculating systems can help you save money on your electric bill and water bill, and you also have the added benefit of not having to wait for hot water.

Our Smart Recirculation Control family of products gives you the benefits of instant hot water systems without the headaches and costs that come with them.

The ETCC is funded in part by ratepayer dollars and the California IOU Emerging Technologies Program, the IOU Codes & Standards Planning & Coordination Subprograms, and the Demand Response Emerging Technologies (DRET) Collaborative programs under the auspices of the California Public Utilities Commission. The municipal portion of this program is funded and administered by Sacramento Municipal Utility District and Los Angeles Department of Water and Power.

This product is simply genius. It revolutionizes the hot water on demand market. Circulating pumps have been sold for years bragging instant hot water and little water waist while waiting for hot water. When we bought this house that had one installed, I was very happy to save water and have instant hot water. That was until I did some research that revealed I am using massive energy by running the pump 24-7 and energy to keep that water hot in the line.  All that waist for the convivence having instant hot water a few times a day. Sure, it did save some water but a very high cost to me and the environment. So, I added a timer to my pump to turn it on morning and evenings when I was more likely to use hot water. Better, but still not that efficient.  I have searched for remote on demand systems that I could add to be more efficient, but they all had issues like hard to install, hard to remember if it was left on or off, WIFI or Bluetooth issues, need to use apps or find a good location(s) for control(s).  Then I ran across this product. Are you kidding me! No fumbling with buttons or apps – just turn the hot water on for a second to get the pump pumping. Brilliant!! Only pumps when you ask for it and need it.  This checks all of the environmental boxes. Absolutely saves water. Use the absolute minimum energy to deliver the hot water – ONLY when needed. The Smart control 32 should be required with every recirculating pump sold.

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Our industry-leading smartphone application and controllers deliver hot water fast, throughout your home without the need to run wires, install buttons or motion sensors and without the need to run your hot water recirculation pump 24/7

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✓ Dedicated recirculation loop✓ Tankless water heater✓ Implements LEED for Homes v4 requirements✓ You have a hot water recirculating pump installed or plan on installing one✓ Satisfies CA Title 24 Requirements

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✓ No dedicated recirculation loop✓ Tank or Tankless water heater✓ Multiple dead-end lines✓ Includes pump, crossover valves, and Smart Thermostatic Control 32✓ Satisfies CA Title 24 Requirements

✓ Dedicated recirculation loop/open loop✓ Tankless water heater✓ You have a hot water recirculating pump installed or plan on installing one✓ Satisfies CA Title 24 Requirements

We’ve all had those moments when we let the water run for 30 seconds or sometimes even a few minutes before any hot water came out of the faucet. With a hot water recirculation system, this will no longer be an issue.

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This is an amazing product that helps you save water and energy while providing the luxury of immediate hot water at your fingertips. The design is elegantly simple and genius. I would not consider a hot water recirculation loop system without the Leridian control system.

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On-demand systems only pull hot water when necessary; smart recirculation pumps typically run less than 30 minutes a day.

✓ Dedicated recirculation loop/open loop✓ Tank water heater✓ You have a hot water recirculating pump installed or plan on installing one✓ Satisfies CA Title 24 Requirements

The on-demand controller is contained within the utility closet and activates hot water delivery from any plumbing fixture on-demand and/or with the use of Smart Timers. Owners control the settings of the Smart Recirculation Control units via a smartphone app to ensure your system only runs when you need it.

Leridian Dynamics sells the 2006SN10 three speed pump that works great with our on demand controls. It is offered as an option when purchasing our controller.

Many cities provide rebates and incentives for installing a recirculating pump because they save water, however, your hot water recirculation system is working nonstop, ultimately driving up your energy bill, so it ends up being a costly luxury.