IGSHPA Certified GeoExchange Designer (CGD Plus)


Instructor: Dr. Charles Remund

Subjects: Renewable HVAC: HVAC Design, Renewable HVAC: Geothermal, Renewable HVAC: IGSHPA Certification

Length: 8 modules

Student Rating

Rating: 8.6/10 (view ratings)
53 students have taken this course


Become a Certified GeoExchange Designer (CGD) with training brought to you from the author of the IGSHPA Design & Installation Manual: Dr. Charles Remund. This course builds on standard curriculum developed by the International Ground Source Heat Pump Association (IGSHPA), the Geothermal Heat Pump Consortium (GHPC), and the Association of Energy Engineers (AEE). This course is designed for engineers, architects and experienced building professionals and covers an introduction to the technology to a complete review of the design process, participants learn the specific information they need to know.

Registration includes training, full access to the instructor over ten weeks, tools and homework, plus a subscription to LoopLink PRO. You'll use this software to design commercial geothermal systems and get feedback from the author of the IGSHPA manual. IGSHPA manuals, membership and exam fees are an optional, additional fee that you can pay when you're ready to sit for the exam.

Ready To Sign Up Today? Click Here to Enroll

Included: Loop Link Pro The Most Powerful Geothemal Design Software On The Planet

You'll get an unlimited six month subscription to LoopLink PRO when you register for this course. You'll use this software to do full designs.

Certification Available Through The International Ground Source Heat Pump Association (Igshpa)

This certification is provided by IGHSPA and the American Association of Energy Engineers. After registering for the course you will be able to purchase your manual from IGSHPA. The current pricing for the manual, IGSHPA membership, and certification testing fees can be found on the official IGSHPA website at igshpa.org. If you plan to purchase all three, expect the pricing for manual, IGSHPA membership and certification testing fees to total ~$1,425 (IGSHPA members get lower rate) in addition to the HeatSpring enrollment fee on this page.

Your Instructor Wrote The Igshpa Manual

Dr. Charles Remund wrote the new IGSHPA Design & Installation Manual that provides the foundation for this course. He is the best instructor you'll ever have.

Self Paced Online Course

This online course is self-paced. You can begin instantly upon enrollment.

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. Return to your course anytime with online access from anywhere in the world.

Earn A Certificate Of Completion

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 one-click LinkedIn integration.

I honestly loved the course. I’m always a big fan of Chuck and Ryan so I’m probably biased, but I really thought the course went great, and I took a lot out of it.

- Chris Nowak, CEA - Sr. Project Engineer, Coneco Energy

+ Read more student ratings and reviews for this course


Charles remund.gif?ixlib=rb 1.1

Dr. Charles Remund

GeoConnections, Inc.

Dr. Remund has over 20 years of experience installing and designing geothermal systems. He has been a certified instructor for IGHSPA since 1994. As a member of the Mechanical Engineering faculty at South Dakota State University (SDSU) he taught thermodynamics, heat transfer, fluid dynamics, design of thermal systems and applied laboratory courses from 1988 to 2009. He...[more]

Course Outline

Welcome - 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.

  • Introduction to HeatSpring (1 minute) (Video) preview
  • Read the AEE's Literature on the CGD (Resource)
  • Set up email notifications and your student profile (Text)
  • Assignment - LoopLink PRO, Manuals, and Exam Fee (Text)
  • Introduce yourself on the discussion board (Text)
Module 1 - Introduction to Ground Source Heat Pump (GSHP) Systems

Geothermal Systems are relatively simple to design, but smart and experienced engineers need to understand a few key concepts before they jump into it. This week’s discussion lays the groundwork for a smooth transition into the geothermal industry. Topics covered include: CGD overview, review of GSHP concepts, components & operation, configuration options, advantages & disadvantages.

  • Week 1 Presentation Slides (Download .pdf)
  • Introduction and Welcome (Video)
  • Week 1 Objectives (Video)
  • Basic Types of Heat Pumps (Video)
  • GSHP Systems (16:27) (Video)
  • Week 1 Part 5 (Video)
  • Week 1 Part 6 (Video)
  • Reading Assignment (Text)
  • Reading Assignment (Text)
  • Week 1 Quiz (19 questions) (Quiz)
Module 2 - Building understanding, pre-modeling, and performing a site visit

Doing a feasibility study is a practical first step to take on any commercial geothermal project. Even if there’s not a budget set aside for anything extensive, there are some simple first steps that will pay off down the road by setting realistic expectations for the client and the team. Topics include: understanding engineering duties, feasibility studies, overview of operating cost calculations, system pre-modeling, understanding site characteristics & coupling options, FTC testing, manifolding options, and installation logistics.

  • Week 2 Presentation Slides (Download .pdf)
  • Week 2 Part 1 (Video)
  • Week 2 Part 2 (Video)
  • Week 2 Part 3 (Video)
  • Week 2 Part 4 (Video)
  • Week 2 Part 5 (Video)
  • Week 2 Part 6 (Video)
  • Optional Reading: IGSHPA RLC Design & Installation Guide - Chapter 7 - Ground Loop Installation (Text)
  • Article: Selling Geothermal as a Hedge Against Rising Energy Prices (Resource)
  • Week 2 Quiz (20 questions) (Quiz)
Module 3 - Peak building loads & energy modeling

This week we will review energy modeling in buildings. We will cover the different methods for estimating building loads and review options for calculating accurate system sizing. We will show you how to calculate system sizing by hand using formulas, then review some software options available for simplifying the process.

  • Week 3 Presentation Slides (Download .pdf)
  • Week 3 Part 1 (Video)
  • Week 3 Part 2 (Video)
  • Week 3 Part 3 (Video)
  • Week 3 Part 4 (Video)
  • Week 3 Part 5 (Video)
  • Week 3 Quiz (18 questions) (Quiz)
  • ASSIGNMENT 1: Calculate FLRHs from a System Load Profile Report from TRACE 500 (Download .pdf)
  • SUPPLEMENT FOR ASSIGNMENT 1: Spreadsheet for Assignment 1 (Download .xls)
  • ASSIGNMENT 2: Calculate FLRHs from a Geothermal Energy Transfer Summary report from TRACE 500 (Download .pdf)
  • SUPPLEMENT FOR ASSIGNMENT 2: Geothermal Energy Transfer Summary from Trane TRACE (Download .pdf)
  • Optional Reading (Text)
Module 4 - Introduction to ground loop heat transfer fluids

This week we we will cover ground loop heat transfer fluids. Water quality, fluid density and viscosity, Reynolds number, convection coefficients, head loss, etc. are important, but often overlooked considerations for a GSHP system.

  • Introduction to ground loop heat transfer fluids (2 hours) (Video)
  • Week 4 Presentation Slides (Download .pdf)
  • Week 4 Quiz (20 questions) (Quiz)
  • ASSIGNMENT 1: Calculating fluid properties (Download .pdf)
  • ASSIGNMENT 2: Calculating film resistance (Download .pdf)
  • RESOURCE FOR ASSIGNMENT 1 & 2: Dowfrost engineering guide (Download .pdf)
Module 5 - GSHP equipment & system options

Most engineers eligible to sit for the CGD already have a solid grasp of mechanical systems. This week’s lesson helps to identify key areas of focus for geothermal systems – including equipment configurations, performance and proper selection.

  • GSHP equipment & system options (2 hours 33 min) (Video)
  • Week 5 Presentation Slides (Download .pdf)
  • Week 5 Quiz (20 questions) (Quiz)
  • ASSIGNMENT 1: GSHP Selection using LoopLink PRO (Download .pdf)
  • RESOURCE FOR ASSIGNMENT 1 Peak heating and cooling load calculations (Download .pdf)
  • RESOURCE FOR ASSIGNMENT 1: Sisseton Floor Plan (pdf) (Download .pdf)
Module 6 - Designing the Ground Heat Exchanger (GHEX)

This is the meatiest part of the course because this is what makes a geothermal system unique, and there’s so much to learn. In this week's lesson we’ll make sure you really understand how to properly design the ground heat exchanger.

  • Designing the Ground Heat Exchanger (2:08) (Video)
  • Week 6 Presentation Slides (Download .pdf)
  • Formation Thermal Conductivity Testing Part 1 (Video)
  • Formation Thermal Conductivity Testing Part 2 (Video)
  • RESOURCE: Download a PDF copy of the FTC testing presentation by GRTI. (Download .pdf)
  • Week 6 Quiz (10 questions) (Quiz)
  • ASSIGNMENT 1: Calculating formation thermal conductivity (Download .pdf)
  • ASSIGNMENT 2: Determining GHEX layout (Download .pdf)
  • ASSIGNMENT 3: Vertical GHEX design using LoopLink PRO (Download .pdf)
  • RESOURCE FOR ASSIGNMENT 3: Formation Thermal Conductivity Report Sisseton Gym (pdf) (Download .pdf)
Module 7 - Connecting the GHEX to the GSHP units

Now that you understand how to properly select equipment and design the ground heat exchanger, it is time to learn how to connect the inside system to the outside. In this week’s lesson, we will discuss ground loop headering, interior manifolding options, interior piping design and circulating pump selection.

  • Connecting the GHEX to the GSHP units (1:42) (Video)
  • Week 7 Presentation Slides (Download .pdf)
  • Week 7 Quiz (20 questions) (Quiz)
  • ASSIGNMENT 1: SDSU-RR circuit design (Download .pdf)
  • ASSIGNMENT 2: Head loss calculations using LoopLink PRO (Download .pdf)
  • RESOURCE FOR ASSIGNMENT 2: Site plan for head loss calcs (Download .pdf)
  • RESOURCE FOR ASSIGNMENT 2: Monthly load data file (Download .gt1)
Module 8 - Practical considerations, QA/QC & Commissioning

Once the system design in put on paper, you need to know how to verify that the system goes in as specified. In this section we discuss best practices for quality assurance, quality control and loopfield commissioning.

  • Grouting Part 1 (Video)
  • Grouting Part 2 (Video)
  • Grouting Part 3 (Video)
  • Grouting Part 4 (Video)
  • Grouting Presentation Slides (Download .pdf)
  • Planning and Design Review (Video)
  • Design Review - Flushing and Purging (Video)
  • Construction Verification (Video)
  • Practical Considerations (Video)
  • Week 8 Presentation Slides (Download .pdf)
  • Week 8 Quiz (20 questions) (Quiz)
  • ASSIGNMENT 1: Calculate the propylene glycol (gal) for a 20% concentration in this GHEX. (Download .pdf)
  • RESOURCE FOR ASSIGNMENT 1: Antifreeze Volume Calculator (.xls) - enable macros for proper operation (Download .xlsm)
  • ASSIGNMENT 2: Calculate the amount of TG Lite and silica sand (50# bags) needed for the site plan provided in Assignment 1 using the online volume calculator. (Resource)
After The Course - Feedback and Additional Resources

No matter how great this course is, we know it's just one part of a bigger journey. In this module we'll start thinking about what comes next. You'll provide feedback on the course, request a certificate of completion, and learn about additional resources. Don't forget that you'll have access to the course materials will remain in your account with minimum guaranteed access for 12 months (1 year). Feel free to come back as much as you like to continue learning, and please stay in touch. Let us know what you do next and how we can help.

  • 71-Question Practice Exam (supplied by IGSHPA) (Quiz)
  • Study Guide Answers (Download .pdf)
  • 1 Year of Access to Course Materials (Text)
  • Feedback: 2-minute Exit Survey (Survey)
  • Consider Joining as a Founding Member (Resource)
  • Certificate of Completion: Request a Certificate (Certificate)

Free Courses on Renewable HVAC, HVAC Design, Geothermal

Commercial Geothermal Heat Pump System Design

Dr. Charles Remund, author of the IGSHPA Design Manual, explains how to design a ground heat exchanger for a commercial geothermal system.