The Importance of Low-Temperature Distribution Systems - Self Study


Author: John Siegenthaler

Subjects: Renewable HVAC: Hydronic Heating, Renewable HVAC: Biomass

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This lecture explains the importance of low water temperature heat emitters and distribution designs in modern hydronic systems. It covers the relationship between heat source efficiency and water temperature. It shows and describes several types of heat emitters that can operate at low water temperatures. It goes on to describe homerun distribution systems and modern variable speed circulators. It concludes with three examples that put all the sub-assemblies into complete systems.

By the end of the lecture you will understand:

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Q+A Call Recording

You'll also get access to the MP3 recording from a 1-hour Q+A call in which John answered questions about the lecture.

Flexible Online Training for Industry Professionals

This is a self-study, self-paced online course. You can begin instantly upon enrollment and complete the course materials at your own pace.

Access Information and Build Your Training Library

After enrolling, the course materials will remain in your account and be accessible 12 months (1 year) after enrollment. Access can be extended beyond 1 year with a monthly membership. Rewatch videos and review assignments as many times as you want. View updates the instructor makes to the course as the industry advances. Return to your course anytime with online access from anywhere in the world.

Certificates of Completion Available for Members Only

Certificates of completion are only provided to HeatSpring Membership subscribers. This course has not been approved by any credentialing organizations (NABCEP, AIA, USGBC etc) for Continuing Education Credits (CEUs). This course is for self education purposes only and completion does not indicate a level of professional expertise or credential.

Free 45 Minute Lecture Video

Enroll today to view John's 45-minute lecture video, which is available streaming any time.


John Siegenthaler

P.E., Appropriate Designs

John Siegenthaler, P.E., is a mechanical engineer and graduate of Rensselaer Polytechnic Institute, a licensed professional engineer, and Professor Emeritus of Engineering Technology at Mohawk Valley Community College. “Siggy” has over 32 years of experience in designing modern hydronic heating systems. He is a hall-of-fame member of the Radiant Professionals Alliance...[more]

Course Outline

Video Lecture and Discussion

In this module, you'll watch the video lecture and download an MP3 recording of the 1-hour Q+A call.

  • Low Water Temperature Hydronic Distribution Systems (48 minutes) (Video - 48:23 minutes)
  • 1-hour Q+A call recording (MP3) (Resource)

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