Certified Duct and Envelope Tightness (DET) Verifier

Certified verifiers are needed statewide to uphold 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 course, you will be able to measure the total leakage of a building envelope and duct system, total leakage to outside, and evaluate the results as measured against the code. Course content includes:

  • Basic building science concepts of air infiltration and building envelope
  • Requirements of the current IRC energy chapter.
  • Protocols for blower door and duct leakage testing and reporting.
  • Calculations for ACH50 and percent duct leakage
  • Study materials for successfully completing the written and in-field DET Verifier certification exams

This training program and the class fee include:

  • Live, interactive instruction and hands-on practice
  • DET training handbook
  • Required Certification Exams (field and written)
  • DET Verifier Certificate (with passing score on both exams)
  • Inclusion on the official state registry of DET certified contractors (with passing score)

Who Should Attend:

Professionals seeking certification to perform mandated envelope and duct testing: building inspectors, HVAC contractors, insulators, energy efficiency contractors and service providers, quality assurance construction managers. Course also covers essential air sealing techniques and building envelope fundamentals.


Credentials:

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 continuing education credits 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. If you need BPI CEU's, provide your BPI number on the sign in sheet to receive 6 hours of credit.

Instructor: Pam Lewandowski, LaHouse Manager of Training

2026 dates: Register

February 4

March 19

April 23

September 24

October 27

November 19

December 10

Class is held from 8:30-4:30 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) unless otherwise noted.

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.

Cost:
$650 registration fee (includes written and field exams)
Note: All fees must be received and cleared prior to the start of class or certificates will not be issued. There are no refunds for purchases. Class date may be changed one time for a fee of $20.

Class size is limited. Payment must be received to reserve your seat.
Contact the office (225) 578-7913 for information or to request additional dates.

1/14/2026 10:06:28 PM
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