Certified Geothermal Inspector

The two day comprehensive Inspector Workshops are designed for Code Enforcing Inspectors for city, and state governments. The Inspector's course would benefit installers, developers, architects, manufacturers, distributors, dealers, HVAC contractors, trenching/drilling contractors, and anyone who desires a working knowledge of how to inspect this innovative technology. Representatives from public utilities, private utilities, and rural electric cooperatives can also benefit from training. Information gathered from the workshop can help utility representatives serve as a source of information regarding money-saving concepts.


After successful completion of the inspector's workshop you will receive a years' membership with IGSHPA. Upon passing the IGSHPA inspector's exam and certification approval you will be classified as an IGSHPA Certified Inspector of GSHP systems. You will then receive an inspector's card and a certificate.


Professionals with one of the following prerequisites may apply for the certification:

  • A 4-year mechanical engineering graduate and/or P.E. or R.A. with 3 years of verified experience in geothermal heat pump systems project design or installation
  • Any other 4-year technical or non-technical degree with 5 years of verified experience in geothermal heat pump system project design or installation
  • Current IGSHPA trained professional
  • 3 years of verified experience in building inspection

*If you do not meet the minimum requirements, you may attend training and take the certification test and apply for CGI In-training.
*Minimum requirements must be met to take the test and apply for certification.
*Both in-house and field experience will be used to evaluate the level of CGI awarded.

**If you meet the requirements and pass the test, but do not have the required experience, you may be awarded the CGI in-training. 


  • GSHP System Benefits
  • IGSHPA Standards, ASHRAE and NGWA Guidelines
  • Local and State GSHP Codes
  • Outside Heat Exchange Configurations
  • Building Site and Loop Field Layout
  • Heat Fusion and Antifreeze Solutions
  • System Startup and Commissioning
  • Sample Inspection forms and checklists

Upcoming Workshops:

  • TBD

Course details:

  • Instructors: 
  • Garen Ewbank CEM, CGD, CRM, CEA, CBEP, CSDP

Garen Ewbank  

Garen developed the in situ thermal conductivity testing methodology used by the GSHP industry to size and design ground heat exchangers (GHEX). Garen is co-owner of the patented Advanced Thermal Conductivity Method (ACTM) that shortens the testing duration and quantifies the diffusivity. Garen has installed GHEXs throughout the U.S. and consulted throughout the world on GHEXs. Garen has been a primary investigator/collaborator on numerous applied research projects on the GHEX, borehole resistance and thermal storage, Garen has peer reviewed several software applications to size and design the GHEX. Garen trains for IGSHPA in all courses domestically and internationally.

Garen is managing member of Ewbank Geo Testing, LLC, member of GeoAire International and at large managing member for The GreyEdge Group, LLC.


  • Cary Smith CEM, CEA, CGD, CGI

Cary Smith

Applying a “Systems” approach to GHPC design is a key to making systems function economically, correctly and with a minimum carbon footprint. This requires complete integration of the Ground Heat Exchanger(GHE), mechanical piping, and controls. As an early adopter of this approach, we have been able to integrate systems from several HUD homes to University campuses. Mixed use applications in City-scape and Campus environments provide ideal opportunity to bring together wasted energy collection and re-use that energy (Energy HighwayTM); significantly increasing System Coefficient of Performance (SCOP). This approach not only increases efficiency (or Least Energy PathTM) but also dramatically reduces greenhouse gas emission and water consumption.

Areas of Expertise:

  • Assessments to determine economic and technical feasibility of GSHP systems for commercial GSHP projects
  • Design and implementation of ground source heat pump systems and associated ground heat exchangers
  • Large scale Distributed (District) Energy Systems)
  • Control and Sequence of Control review and optimization
  • Forensic analysis of failed or poorly operating GSHP systems
  • Workshops and training seminars for designers of commercial and residential GSHP systems (Accredited IGSHPA Trainer)


  • $395.00 (This session is sponsored by PSEG-LI, typical cost is $1,250)

This workshop offers 16 Professional Development Hours (PDHs) for Professional Engineers and Architects or equivalent Professional Development Elective (PDE) hours may be obtained for Code Professional Officials

Registration Link               

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Last Modified 1/3/23