Heat Pumps
HVAC Design

Achieving Hydraulic Separation in Hydronic Systems - Self Study

John Siegenthaler • Last updated 02/2021

4.8/5 (view ratings)
967 students
1 module
1:19 hours
7 assignments

Course description

Free lecture offered in partnership with Plumbing & Mechanical Magazine.

Many hydronic systems have two or more circulators that will, at times, operate simultaneously. Without proper hydraulic separation, this could lead to interference between the circulators and unacceptable heat delivery. It's very important to avoid such situations.

This lecture will outline 4 different methods for providing hydraulic separation, some of which may reduce the installation and operating cost of a system.

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Full course outline

Module 1 - Achieving Hydraulic Separation in Hydronic Systems

This one-hour lecture covers: 1) What hydraulic separation is, 2) What can happen when hydraulic separation is not present, 3) Four methods for achieving hydraulic separation, 4) The relationship between primary / secondary piping and hydraulic separation, 5) How to properly size a hydraulic separator.

  • Presentation Slides (.pdf)
  • First half of the presentation (22:12) (22:12 minutes)
  • Second half of the presentation (54:46) (54:46 minutes)
  • Optional resource: idronics - Separation in Hydronic Systems (.pdf)


John Siegenthaler

P.E., 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 over 40 years of experience in designing modern hydronic systems. He is a hall-of-fame member of the Radiant Panel Association, and a... Learn more


75 reviews

967 students have taken this course

by Richard Ward 06/11/2021

Knowledgeable and easy to follow instructor, I found the course a helpful introduction to the subject

by Richard Greaves 06/01/2023


by Maria S 06/19/2020

by ARIVAZHAGAN M 05/15/2020


by Dr K Gunasekaran 04/12/2020


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Frequently asked questions

How does this course work?

This is a free course. Enroll today and get access to all of the materials instantly. The lecture video and other materials are available any time.

How long do I have access to the materials?

For free courses there is no guarantee for how long the course materials will be available.

Is there a certificate of completion?

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.

Can I register multiple people?

Yes, this is a free course so you can share this page with other people from your group.

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