About this course

This is a rare opportunity to take an advanced hydronic design course with John Siegenthaler. The course provides a detailed discussion of the design elements underlying modern hydronic heating systems. It presents both design concepts and design tools for optimizing hydronic heating systems in a variety of contemporary applications. It is not meant as an introduction course. Rather, it is structured to combine a student’s existing knowledge, with new approaches and analytical methods that are specifically focused on the cutting-edge of hydronic heating. The goal is to equip students to design state-of-the-art systems for residential and light commercial buildings that deliver unsurpassed comfort, efficiency, and reliability.

Learn how to design state-of-the-art systems for residential and light commercial buildings that deliver unsurpassed comfort, efficiency and reliability. 

Textbook - "Modern Hydronic Heating" (Not Included)
You'll need access to a copy of John's "Modern Hydronic Heating" textbook for this course, any version of this book is okay and there are many copies available on Amazon at low cost.

Learning Objectives

  • Learn the design elements underlying modern hydronic heating systems.
  • Master design concepts and design tools for optimizing hydronic heating systems in a variety of contemporary applications.

Course outline

12 modules
30 - 40 hours to complete
27:27 hours of video lectures
Welcome • 4 assignments
Orientation Materials

This course is self-paced, so you don’t need to be logged in at any specific time. You can get started immediately after you enroll and the course materials will remain in your account with minimum guaranteed access for 12 months (1 year) after enrollment.

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Module 1 • 8 assignments
Welcome & Fundamentals

This week we'll provide a course overview and review the benefits of hydronic heating, including: superior comfort, ability to zone, low distribution energy use, minimally invasive installation. I'll discuss why we might opt for water versus air, and where the most common mistakes are made by hydronic designers.

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Module 2 • 10 assignments
Hydronic Heat Sources

In this module we'll lay a foundation and explore the characteristics of various heating sources. Topics include: Conventional boilers (efficiency and boiler protection), Mod/con boilers, Electric boilers (when are they applicable?), Hydronic heat pump characteristics, Capacity & COP versus operating temperatures, Solar thermal collectors (design considerations, practical combisystems), and General heat source design considerations (head loss, buffering, protection against temperature extremes, and safety).

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Module 3 • 11 assignments
Pipes, Fittings, and Valves

Good designers need to know the resources available to them. In the context of hydronics, there are thousands of available options for piping, fittings, and valves. This module discusses specific types of pipe and fittings that are appropriate for hydronic systems. It also covers both standard and specialized valves use in hydronic systems. Design tips are provided that help you avoid selection and placement errors. The knowledge this module provides on the "building blocks" will be used to assemble complete systems in later modules.

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Module 4 • 11 assignments
Fluid Flow Through Piping

This week has a lot of content about the nature of fluid flow through piping. These are the building blocks of the calculations we'll be funning in subsequent modules.

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Module 5 • 13 assignments
Circulators

In this module you'll learn: Common types of circulators (PSC, ECM), Review of circulation performance (pump curve), Design techniques to avoid circulation cavitation, Hydraulic separation, Applying variable speed circulators (constant and proportional delta P control), and Circulator selection.

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Module 6 • 8 assignments
Expansion Tanks & Air Elimination

Heat emitters and the distribution systems that feed them are at the heart of hydronic design. In this module you'll learn to master low temperature heat emitter options: Panel radiators, Radiant floors, Radiant ceilings and walls, Homerun distribution systems, 2-pipe distribution systems.

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Module 7 • 12 assignments
Heat Emitters

Heat emitters and the distribution systems that feed them are at the heart of hydronic design. In this module you'll learn to master low temperature heat emitter options: Panel radiators, Radiant floors, Radiant ceilings and walls, Homerun distribution systems, 2-pipe distribution systems.

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Module 8 • 12 assignments
Control Concepts and Hardware

Controls are critical to overall system efficiency. This week we'll discuss: Control terminology, Temperature setpoint control, Differential temperature control, Outdoor reset control, Mixing strategies (3-way and 4-way motorized valves, and injection mixing), and Using relays and switches to create logic.

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Module 9 • 10 assignments
Distribution Systems

This week we will go through a complete system design for a basic residential system using panel radiators, indirect water heater, mod/con boiler, buffer tank. Schematics, calculations, layout, controls.

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Module 10 • 15 assignments
System Examples

This week we will look at a more advanced system from start to finish for a residential system with radiant ceilings supplied from a geothermal heat pump, inputs for solar thermal collectors, auxiliary boiler. Schematics, calculations, layout, controls. You will see how all the previous materials covered in the course come together to produce an efficient design.

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Conclusion • 5 assignments
Feedback and Additional Resources

This is our last module but you still have access to the all of course materials for 12 months (1 year), so keep working and you'll be able to complete the course at your own pace. After your year of access expires you can optionally extend access with a HeatSpring Membership. Enjoy the course and keep in touch!

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Continuing Education Units

Approved for the following CEUs

  • 26 AIA LU/HSW Credits

Instructor

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...

Frequently asked questions

Full FAQ
How does this course work?
You can begin this online course instantly upon enrollment. This 10 module course is delivered entirely online. This course is self-paced and you can set your own schedule to complete the materials. You can begin the lecture videos and other course materials as soon as you enroll. During your year of access the instructor will be in the course answering questions on the discussion board. After successfully completing the course, you will be able to generate a certificate of completion.
How long do I have access to the materials?
Students get unlimited access to the course materials as soon as they enroll and for one year (365 days) after enrollment. 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. After the one year of access expires, access can be extended by joining as a HeatSpring member. A single membership extends access to course materials for all past enrollments.
After this course would I be able to do a heat loss calculation determine BTU, GPM, flow rates, proper delta T, size of piping, size of pump? Also do you go over how to use a heat load program?
We spend some time on heat load calculations - but not a lot.

We do encourage students taking the course to use the hydronics design studio demo version software which does have a heat load module within it.

We do focus on flow rates, pump sizing, delta T, and other hydronic specific subjects in the course.

Is there a certificate of completion?
Yes, when you complete this course you are eligible for a certificate of completion from HeatSpring. You can download your certificate as soon as you have completed all of the course requirements. Students can easily share their verified certificates on their LinkedIn profiles using our LinkedIn integration.
Can I register multiple people?
Yes please visit our HeatSpring for Teams page to get a group discount.

Reviews

4.7
Based on 55 reviews
353
students have taken this course
02/20/2025

This is a fantastic course for hydronic professionals. The lectures add so much to the textbook material! It takes some time to work through this course, but it is well worth it!

Warren Jurgens
Sales Manager, J.M. O'Connor
04/07/2022

This course has given me so many resources to use and build my knowledge upon. I would recommend anyone that has anything to do with designing or working on hydronic systems to consider this course.

Matthew Brewington
Hydronic Specialist, Behler-Young
02/15/2020

My takeaways from this course were monumental. I am a retired Chemical Engineer who has been away from the "tools" for some time. John resurrected skills and knowledge from my past and made the entire course understandable from beginning to end. In particular, the companionship of John's lectures and his text, along with many specific design procedures, tips and tricks, and design tools will be indispensable as I continue designing my systems. Thanks John for a great experience.

Scott Phillips
President, Strategic Project Solutions

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