The Advantages of Smart Recirculation Technology in Tankless Water Heaters

Sponsored Content
Published

Smart technology has been incorporated into nearly every appliance within the home, including faucets, refrigerators, security systems, lights and more. Most of these technologies provide energy savings and efficiencies for the home, making them highly desirable to home owners. When looking at major appliances that impact utility bills, such as water heaters, the desire for a smarter, more efficient home appliance increases.

Tankless water heaters are an excellent choice when it comes to selecting technology that saves money in the long run. Tankless units are available with control apps, where home owners can schedule and correlate hot water with their busy schedules, saving energy and water. But even those apps have already been replaced with newer and smarter tankless water heater technology, such as Rinnai’s new Smart-Circ™ Intelligent Recirculation™ featured in the recently launched RE Series™. This technology learns a user’s hot water schedule over seven days and without any prompt, schedules a recirculation pattern, delivering hot water when needed.

The addition of smart recirculation benefits not only your customer but you as the installer, by significantly reducing time spent on installation. The main difference is you no longer have to set up control apps or educate the customer on how to use them. Simply install and let the technology work its magic.

Smart recirculation technology tracks each time a significant hot water usage occurs, such as a shower or a bath. The technology records it and then will schedule recirculation at that same time for the next seven days. This allows some fluctuations in schedules, for instance, if a schedule deviates, such as needing to leave earlier in the day, the technology constantly learns and adjusts to new water usage. So should something happen to schedules, the water heater will learn and schedule thereafter accordingly. The tankless technology will eventually forget the old schedule if significant hot water usage doesn’t reoccur.

water heater

When speaking with a customer on smart recirculation, below are a list of benefits that provide a positive user experience:

  • Receiving never-ending hot water without having to set schedules or prompt with on-demand devices.
  • Saving on water usage, as the recirculation pattern reduces the need to run water from a faucet or other appliance until it reaches the desired temperature.
  • Saving on energy consumption with hot water delivery being scheduled based on past usage versus having it on a mode that recirculates on regular time intervals, such as with traditional tank water heaters, ensures the pump doesn’t run during off-times when hot water is not being used.
  • Increasing longevity of the unit, as the unit is not actively working during periods when hot water is not in use, the appliance is reducing the strain put on itself, allowing the unit to function for a longer timeframe.

Smart technology provides customers with the options they need to control recirculation, benefiting the customer and the building professional in terms of reduced labor and time needed for installation. To learn more about Rinnai’s RE Series, featuring Smart-Circ Intelligent Recirculation technology, visit www.rinnai.us.

Subscribe to NAHBNow

Log in or create account to subscribe to notifications of new posts.

Log in to subscribe

Latest from NAHBNow

Membership

Feb 06, 2026

A Message from Jim Chapman, Candidate for NAHB 2026 Third Vice Chairman

The election for Third Vice Chairman will take place at the Leadership Council meeting during the 2026 International Builders' Show.

Codes and Standards

Feb 06, 2026

Learn About the 2024 IECC in Free Video Series for NAHB Members

NAHB is now offering members a free educational video series on the 2024 International Energy Conservation Code. The videos break down key differences between the 2024 IECC and past editions, focusing on changes that improve usability and what they mean for construction costs.

View all

Latest Economic News

Economics

Feb 06, 2026

The Size of the Housing Shortage: 2024 Data

Persistently low homeowner and rental vacancy rates indicate that the U.S. housing market remains structurally undersupplied.

Economics

Feb 05, 2026

Job Openings Fall as Labor Market Weakens

Running counter to the data for the full economy, the count of open, unfilled positions in the construction industry increased in December, per the delayed Bureau of Labor Statistics Job Openings and Labor Turnover Survey (JOLTS). The current level of open jobs is down measurably from two years ago due to declines in construction activity, particularly in housing.

Economics

Feb 04, 2026

Mortgage Rates Declined Despite Higher Treasury Yields

Long-term mortgage rates continued to decline in January. According to Freddie Mac, the 30-year fixed-rate mortgage averaged 6.10% last month, 9 basis points (bps) lower than December. Meanwhile, the 15-year rate declined 4 bps to 5.44%. Compared to a year ago, the 30-year rate is lower by 86 bps. The 15-year rate is also lower by 72 bps.