B4 2021 Session 3: Air-to-water heat pumps and hydronic systems

May 26, 2021

Technical Session

As the energy market shifts toward beneficial electrification, we’ll continue to see an increase in the use of heat pumps as heat sources for many building systems, and hydronic systems are no different. One of the most promising options for hydronic systems is the air-to-water heat pump, which extracts heat from outdoor air—even at sub-zero temperatures—and delivers it through a water-based distribution system. This combination can provide superior comfort while meeting energy efficiency goals, making it a great choice to meet the market demand for decarbonization.

In this session, hydronics expert John Siegenthaler describes the breadth of currently available air-to-water heat pumps, including their performance characteristics. He then shows how to combine these heat pumps in both new and retrofit situations, sharing practical do’s and don’ts as well as several templates that can serve as starting points for optimal system design.

Fireside Chat

We continue the overview of air-to-water heat pumps with John Siegethaler and Jim Cusack from Enertech with an interactive discussion of how to apply these technologies to meet our energy efficiency goals.

As a result of this webinar, you will be able to:

  1. List the benefits of air-to-water heat pumps
  2. Describe the importance of matching air-to-water heat pumps with low-temperature distribution systems
  3. Identify potential design or installation mistakes that could compromise system performance
  4. Select an appropriate system template depending on the loads the heat pump will service

Continuing Education Credits

  • BPI This course has been pre-approved for 0.75 BPI CEUs.
  • NAHB This webinar offers 1.5 hour of continuing education credit for the following NAHB professional designations: CAPS, CGA, CGB, CGP, CGR, GMB, GMR and Master CGP
  • NARI This course is approved for 1.5 NARI CEUs.
  • NATE This course is approved for 1.5 CEHs.
  • RESNET The Better Buildings: Better Business Conference is a regional RESNET Conference and this course has been approved by RESNET for 1.5 professional development credits.  
  • WI-DSPS Wisconsin Department of Safety and Professional Services has approved this course for 1.5 CEUs for the following credentials: Dwelling Contractor Qualifier Certification and UDC-HVAC Inspector Certification. Note that you may not retake the same course for credit more than once during the 1-, 2- or 4-year term of your specific credential.

This course will not be pre-approved for GBCI credits; however, if you believe the content is applicable to your credential, you can self-report credits.

Credits are only available for the technical session. 

Click here for an important note on continuing education credits

If you need continuing education credits for this webinar, you will need to pass a quiz with a score of 80% or higher. You will be able to view the course on-demand, take the quiz, and complete the evaluation in Slipstream’s Learning Management System. Create an account (you only need to do this once) or go directly to the on-demand webinar. All credits have different expiration dates, so it is to your advantage to take the quiz as soon as possible.

About Our Speakers

John Siegenthaler

John Siegenthaler
Appropriate Designs

John Siegenthaler, P.E., is a mechanical engineering graduate of Rensselaer Polytechnic Institute, a licensed professional engineer, and Professor Emeritus of Engineering Technology at Mohawk Valley Community College. “Siggy” has 40 years of experience in designing modern hydronic systems. He is a hall-of-fame member of the Radiant Panel Association, and a presenter at national and international conferences on hydronic and radiant heating. John is principal of Appropriate Designs, a consulting engineering firm in Holland Patent, NY. He is the author of two textbooks: Modern Hydronic Heating 3rd Ed., and Heating with Renewable Energy. John currently writes about hydronics technology for several trade publications including: Plumbing & Mechanical, PM Engineer, The ACHR NEWS, and Canadian magazine Heating, Plumbing, Air Conditioning (HPAC).

Jim Cusack

Jim Cusack

Jim has been in the construction industry for his entire career and was an HVAC contractor specializing in hydronics & geothermal for over 16 years. His experience with building envelope, ventilation and looking at the whole house as a system gives him a unique perspective when it comes to HVAC system design and training. He has been involved in every phase of geothermal design and installation. Jim is an International Ground Source Heat Pump Association accredited trainer and installer he also serves on the ANSI/CSA standards committee. Jim was a founding member of Minnesota green star (now the green home institute) and has a passion for energy efficient and net zero home building.



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