Certified Vertical Closed Loop Driller (CVCLD) Prep Workshop

This course will help prepare you for the 75 multiple-choice question Vertical Closed Loop exam drillers are required to pass to earn the Certified Vertical Closed Loop Driller designation through the National Ground Water Association. The course will include skills and competencies reflected on the drilling operations DACUM and the geothermal vertical closed loop drilling operations DACUM, as well as NGWA's Professional Designations Information and Study Guide, and Guidelines for the Construction of Loop Wells for Vertical Closed Loop Ground Source Heat Pump Systems, and Groundwater & Wells.

Who should attend?

Current Drilling Contractors, Drilling Company Owners, Drilling Company Project Managers, Drilling Company Administrators


Certification is accomplished by application through NGWA. Determine if eligible under the Eligibility Requirements listed Pass the Vertical Closed Loop Exam Complete the application materials listed on the NGWA website. Attending the IGSHPA CVCLD prep course will not automatically lead to certification. Contact NGWA for certification and exam information.


  • GSHP System Design and Layout Basics
  • System Materials
  • Pressure Drop Calculations
  • Thermal Conductivity
  • Drilling Processes
  • Containment Procedures
  • Grouting Concepts
  • Air and Debris Purging
  • Pipe Joining Techniques
  • Project Bidding
  • Partnerships

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Registration information:

Register directly through the organization offering training. For information on classes held at the new IGSHPA training facility and headquarters in Stillwater, Oklahoma, see below. For a complete list of courses, click here.


Next class:

Next class:

IGSHPA - held in conjuction with IGSHPA's Annual Conference & Expo
March 13, 2017 (includes workshop & conference)
Location: Denver, CO
Trainer: TBA
Fee: $750
(Note: This workshop fee includes IGSHPA Technical Conference and Expo registration. Register by February 14th; seating is limited.
Current IGSHPA members will receive $50 discount)

Class Information:
Lunch and breaks on course days and conference days are included in the course registration fees. Registration begins at 7:30 am. Click here for travel and lodging information.


After you register, you will be sent a registration confirmation, and your reading list and manuals. International students and those registering less than two weeks prior to class will pick up their manuals at the class.

To register online click here -OR- call our office at 800-626-4747

Cancellation policy:

The full tuition fee will be refunded if you cancel your registration at least two (2) weeks prior to the first day of the confirmed workshop. The full fee will be charged if you do not attend and do not cancel the registration at least fourteen (14) days before the workshop. You may designate another individual as your substitute.

Note: All courses are subject to cancellation by IGSHPA. IGSHPA will give all registrants notice in the event of a course cancellation at least 2 weeks prior to the scheduled date. Contact IGSHPA to verify if a course has been cancelled before making any non-refundable travel arrangements.