Duct and Envelope Testing (DET) Training and Certification

Certified verifiers are needed statewide for the Louisiana IRC energy code.

Course Information:

Woman conducting duct leakage test.

Become a certified Duct and Envelope Tightness (DET) Verifier qualified to perform the diagnostic testing required for new homes by the current residential energy codes and report results for code compliance. LaHouse Resource Center is an authorized provider of the Southface Energy Institute training, exam and certification.

After successful completion of this 2-day course, you will be able to measure the air leakage of a building envelope and duct system, and evaluate the results as measured against the code. Course content includes:

  • Basic building science concepts of air flow, air pressure and building performance.
  • The relationship between duct and building tightness
  • Requirements of the current IRC energy chapter.
  • Protocols for blower door and duct leakage testing and reporting.
  • Calculations for ACH50 and percent duct leakage
  • Tips for successfully completing the written and in-field DET Verifier certification exams

This training program and the class fee include:

  • 2 days of live, interactive instruction and hands-on practice (plus half day DET exams)
  • DET training handbook
  • Online tutorials
  • Written DET Verifier exam
  • In-field DET Verifier exam
  • DET Verifier Certificate (with passing score on both exams)
  • Certificate of Attendance (for CEU hours)

Who Should Attend:

Professionals seeking certification by a nationally recognized testing organization to perform mandated testing by the current residential energy code, building inspectors, HVAC contractors, energy efficiency contractors and service providers, quality assurance construction managers.


Certification: Duct and Envelope Tightness (DET) Verifier Certificate (NOTE: You must receive a passing score on both exams (included in tuition costs) for Southface designation as a DET Verifier.)

Education units: This seminar is pre-approved for 12 OF Hours of continuing education hours for Louisiana residential contractors (request LSLBC form) and La. Home Inspectors (full credit through LSBHI). A LaHouse Resource Center certificate of completion will also be issued to attendees.

Certificate of attendance will be issued and may qualify for other professional units.

Instructor: Paul LaGrange, LSU AgCenter Building Science Educators

Date, Time and Location:
2024 classes:

March 13-14 Register

April 17-18 Register

November 7-8 Register

Class is held from 8:00-4:30 in the Teaching Center of LaHouse Resource Center, located on 3622 Gourrier Ave., Baton Rouge, La. 70820 (directly across from LSU Alex Box Baseball Stadium).

The LSU AgCenter provides equal opportunities in programs and employment. If you need an accommodation to participate in an event, please contact LaHouse at 225-578-7913 at least two weeks prior to the event.

Prerequisites and Class Supplies:
Online Pre-class Tutorials: Basics of Building Science online 1-hour modules (access provided upon registration)
Supplies: Bring a calculator for the written and field exams.

$600 registration fee (includes written and field exams on day 2)*
*20% discount on class fee for LHBA and La. Realtor members, LaHouse Gold + Key Contributors, government and non-profit organization employees. 50% discount for college faculty and full-time students.

Note: LSU AgCenter - LaHouse courses qualify for Louisiana Incumbent Worker Training Program (IWTP) tuition reimbursement for eligible employers. See www.laworks.net for IWTP information.

Class size is limited. Payment must be received to reserve your seat.

Contact the office (225) 578-7913 for information.

12/11/2023 5:24:54 PM
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