Build Better. Test Smarter. Certify With IDL.
Stand Out in the Field with the IDL Certification
Whether you're a contractor, builder, remodeler, or HVAC pro, the Infiltration and Duct Leakage (IDL) certification equips you with the skills to perform blower door and duct leakage tests that meet IECC code requirements - so you can confidently take on new builds and remodels with credibility and compliance.
By earning the IDL certification, you can:
- Expand your services by offering code-compliant testing for new construction and remodels
- Meet growing demand for certified professionals who can ensure airtight, energy-efficient homes
- Demonstrate your credibility with a nationally recognized certification from BPI
- Stay competitive by gaining the skills to conduct tests to ASTM E779 and E1554-07 standards
How to Become
Certified
- Review the Certification Scheme Handbook
- Optional Training: While not required, training is a great way to strengthen your knowledge for the exam.
- Book your exam with a BPI Test Center in your area
- Take your field exam
- Certification: If successful, your certification will be available to download in your candidate account
Exam Information
Field exam: Hands on
Time limit: 1.5 hours
Passing score: 85% or higher
Exam Fees: Exam prices are set by BPI Test Centers. Find your local BPI Test Center to learn more.
Recertification
Please review the Certification Renewal Policies and fill out the Application for Certification Renewal.
Certification Renewal Policies Application for Renewal
Got a Question About
the IDL Certification?
Applications for Testing Accommodations
Need accommodations for your BPI exam? Access the forms below to request special testing or language-related support.
