DET - Duct & Envelope Tightness Training

This two-day course is designed to introduce the skills necessary to become a Duct and Envelope Tightness (DET) Verifier, certified to perform the diagnostic testing required for new homes by the 2009 IRC/IECC with Alabama amendments.

Online math course must be completed prior to attending. Details given at registration.

To register, call 1-800-634-0154


Did you know?

  • 2009 Alabama Energy & Residential Code went into effect October 1st, 2012 AERC Manual
  • Duct tightness testing required on all new ductwork and R-8 insulation for all ducts in attics required as of October 1st, 2016
  • Supplemental heat control for heat pumps is required after
  • Alabama Power's HVAC Training Center offers DET Certification training  
  • An online math course must be completed prior to attending the DET certification class
  • The website to the math course is
  • Cost of DET Training is $600
  • 76% or above grade is required on a practical exam for certification

Other Resources: ADECA