John Siegenthaler

Air-to-water heat pumps provide a way to migrate existing hydronic heating systems supplied by fossil fuel boilers to sustainable electric energy.  In many projects there are compelling advantages for retaining the existing boiler and adding the heat pump to create a “dual-fuel” system.  These systems will likely be the most common application for air-to-water heat Read more

Air-to-water heat pumps provide a way to migrate existing hydronic heating systems supplied by fossil fuel boilers to sustainable electric energy.  In many projects there are compelling advantages for retaining the existing boiler and adding the heat pump to create a “dual-fuel” system.  These systems will likely be the most common application for air-to-water heat pumps in the near future as carbon reduction regulations reshape the market.

You’ll learn:
→ What’s the highest water temperature an air-to-water heat pump can produce?
→ Are buffer tanks always needed in systems with air-to-water heat pumps?
→ Should air-to-water heat pumps be connected in series with boilers?
→ Can air-to-water heat pumps be retrofitted to systems that use fin-tube baseboard?

Hydronics guru John Siegenthaler, P.E. will discuss the benefits of dual-fuel systems while examining the technical details for piping and controls in this 90 minute extended Coffee with Caleffi webinar edition on Thursday, Nov. 30 at 12:00 p.m. CST.

Siegenthaler is a seasoned industry leader and passionate teacher, eager to share his over 40 years’ experience in the understanding and proper application of water-based engineering principles with our audience.

A Certificate of Attendance is emailed to attendees following the event for continuing education audits.  The monthly educational webinars are free and are intended for engineers, contractors, designers and wholesalers.

Register Here

Can a hydronic system effectively – and efficiently – provide heating, cooling, domestic hot water AND heat recovery ventilation in a residential home?  John Siegenthaler, P.E., a favorite to the webinar series, will discuss design details, challenges and lessons learned from a from a recent project profile of a modern hybrid approach utilizing an air-to-water heat Read more

Can a hydronic system effectively – and efficiently – provide heating, cooling, domestic hot water AND heat recovery ventilation in a residential home?  John Siegenthaler, P.E., a favorite to the webinar series, will discuss design details, challenges and lessons learned from a from a recent project profile of a modern hybrid approach utilizing an air-to-water heat pump system that checks all of the boxes during this 90-minute extended edition.

You’ll learn:
→  Back-up heating.  When is it necessary?
→  Can a single 44 watt circulator supply all space heating flow for a 2,300 square foot house?
→  Does chilled water cooling and heat recovery ventilation require separate duct systems?
→  Can panel radiators operate at supply water temperature below 100 ºF on design days?
→  Where does an “extended manifold” piping system make sense?
→  How are 3-way diverter valves applied in air-to-water heat pump systems?
→  What are the advantages of multi-zone heating combined with single-zone cooling?

Siegenthaler is a seasoned industry leader and passionate teacher, eager to share his over 40 years’ experience in the understanding and proper application of water-based engineering principles with our audience. He is the principal of Appropriate Designs and a regular contributor to industry publications.

Coffee with Caleffi technical training webinars are free and intended for contractors, designers and wholesalers.  A Certificate of Attendance is emailed to attendees following the webinar for continuing education consideration.  Want to join us?  Simply register today.

There is an ongoing need for technicians who can diagnose and correct issues with all types of HVAC systems. Continuing from Troubleshooting Hydronic Systems, Part 1 where host John Siegenthaler, P.E. built a framework for system troubleshooting, this webinar will cover identifying common system problems and applying corrective actions. Siegenthaler finishes this two-part discussion at Read more

There is an ongoing need for technicians who can diagnose and correct issues with all types of HVAC systems. Continuing from Troubleshooting Hydronic Systems, Part 1 where host John Siegenthaler, P.E. built a framework for system troubleshooting, this webinar will cover identifying common system problems and applying corrective actions. Siegenthaler finishes this two-part discussion at the next Coffee with Caleffi™ on Thursday, March 23 from 12 noon – 1:00 p.m. CDT.

You’ll learn:
→ How to apply the systematic approach to troubleshooting from Part 1
→ Common compromised performance symptoms and causes
→ Design modifications to prevent issues
→ Corrective actions in existing systems

Siegenthaler is a seasoned industry leader and passionate teacher, eager to share his over 40 years’ experience in the understanding and proper application of water-based engineering principles with our audience. He is the principal of Appropriate Designs and a regular contributor to industry publications.

Part 1 of this webinar series can be conveniently accessed on YouTube. For further resources, the 32nd edition of idronics™: Troubleshooting Hydronic Systems, is available at idronics.caleffi.com.

The monthly educational webinars are free and are intended for engineers, contractors, designers and wholesalers. Visit our website at www.caleffi.us for schedule details and registration. A Certificate of Attendance is emailed to attendees following the event for continuing education audits.

You’re invited to our complimentary educational series, Coffee with Caleffi™.  The popular series is an online technical training webinar and is intended for engineers, contractors, designers and wholesalers. What’s next? Air-to-Slab Heat Pump Systems Thursday, Nov. 17 12:00 – 1:00 p.m. CST Technical Content Level:  Intermediate  REGISTER TODAY Air to water heat pump technology is steadily gaining traction.  When a heat Read more

You’re invited to our complimentary educational series, Coffee with Caleffi™.  The popular series is an online technical training webinar and is intended for engineers, contractors, designers and wholesalers.

What’s next?
Air-to-Slab Heat Pump Systems
Thursday, Nov. 17
12:00 – 1:00 p.m. CST

Technical Content Level:  Intermediate 

Air to water heat pump technology is steadily gaining traction.  When a heat pump’s coefficient of performance is maximized, energy efficiency and resiliency benefits are substantial. How can engineers, designers and installers effectively apply this emerging technology to high thermal mass floor heating applications?  Which commercial systems are good candidates for this type of design?

Hydronics expert John Siegenthaler, P.E. will detail the approaches that can best utilize this technology.

You’ll learn:
→ Do all air to water heat pump systems need buffer tanks?
→ How does the thermal mass of a floor slab compare to that of a buffer tank? → What is a simple way to control a heat pump supplying a heated floor slab? → What are the benefits of using constant circulation in “garage-type” floor heating systems?

Siegenthaler is a seasoned industry leader and passionate teacher, eager to share his over 40 years’ experience in the understanding and proper application of water-based engineering principles with our audience. He is the principal of Appropriate Designs and a regular contributor to industry publications.

It’s easy to join us.  Simply register today!

Caleffi North America, Inc., a leader in state-of-the-art engineered solutions for hydronic and plumbing systems and committed to providing Excellence in Education, is proud to introduce the 31st edition of idronics™:  Fundamentals of Pressure Reducing Valves.  This newest edition builds a technical foundation for selecting, installing and servicing pressure reducing valves.  Readers will learn how, when Read more

Caleffi North America, Inc., a leader in state-of-the-art engineered solutions for hydronic and plumbing systems and committed to providing Excellence in Education, is proud to introduce the 31st edition of idronics™:  Fundamentals of Pressure Reducing Valves.  This newest edition builds a technical foundation for selecting, installing and servicing pressure reducing valves.  Readers will learn how, when and why to design specific pressure reducing assemblies.

Caleffi also provides an interactive experience for the journal, optimizing access for mobile, tablets and desktop devices.  The content is fully searchable and is complimented with video and resource links.  The interactive edition can be found at idronics.caleffi.com.

A formal Coffee with Caleffi™ webinar, an online technical training series, discussed the issue and was presented on Thursday, Jul. 21.  John Siegenthaler, P.E. and Kevin Freidt, Caleffi director of product management, hosted the discussion.  An archived version is available on .

Not familiar with idronics?  The complimentary journal is provided semi-annually and is intended for industry professionals to aid them in system design, component application and selection.  Subscribers to the journal will receive a hard copy of the new edition in August.

For further information, please contact us at (414) 238-2360.