BPI Credentials
BPI Infiltration and Duct Leakage (IDL) Certification
Earning the Infiltration and Duct Leakage (IDL) certification is a simple, comprehensive, and affordable way for builders, remodelers, HVAC, insulation, and other contractors to gain the skills needed to offer duct leakage and blower door tests, in compliance with IECC codes for new home construction or existing home remodels.
By earning the IDL certification, you prove that you can conduct duct leakage tests to the ASTM E1554-07 standard and blower door tests to the ASTM E779 standard.
Training for this credential
What is the IDL Certification?
The Building Performance Institute (BPI) Infiltration and Duct Leakage (IDL) Certification equips contractors with essential skills for conducting duct leakage and blower door testing. This certification is ideal for builders, remodelers, HVAC specialists, and insulation professionals who need to verify compliance with IECC codes in both new construction and home renovation projects.
IDL certification validates your expertise in performing duct leakage tests (ASTM E1554-07) and blower door tests (ASTM E779) - critical requirements for ensuring energy efficiency in residential construction.
How To Qualify
There are no prerequisites to be eligible to take the IDL field exam.
Topics Covered on the Exam
A full list of knowledge, skills, and abilities for the IDL exam can be found in the "Functions and Tasks” section of the Infiltration Duct Leakage Certification Scheme Handbook.
It is also recommended that you are familiar with the IDL Certification Field Guide. This is the information that will certainly be covered in your field exam.
How to Prepare
Set yourself up for success with HeatSpring's comprehensive BPI Infiltration and Duct Leakage (IDL) Certification Training course.
While the exam is open to all candidates without required training or coursework, our specialized preparation gives you the knowledge and confidence to excel.
Exam Details
Candidates must take a field exam to become Infiltration and Duct Leakage certified.
Field exam: Hands-on field portion. Can be completed remotely.
Exam fee: $450
Time limit: 1 ½ hours
Passing score: 85% or higher
Processing time for exam results: 2-4 weeks
Recertification
BPI IDL professionals must recertify every three (3) years. To be eligible for certification renewal, professionals must:
- Accumulate a minimum of 1000 hours (over the course of 3 years) of experience related to the IDL certification. This includes diagnostic measurements, infiltration and duct leak testing, interpretation of testing results, oversight, and QA/ OR;
- Successfully challenge the IDL field exam that is current at the time of renewal
Please review the Certification Renewal Policies for more information. Fill out the Application for Certification Renewal
Approved BPI CEU Hours
These BPI Advanced Credit Hours are approved for BPI Infiltration and Duct Leakage (IDL) Certification CEU renewal:
| A BPI Approved Course | Advanced Hours for Exam |
|---|---|
| 8 | |
| 4 | |
| 8 | |
| 4 | |
| 16 | |
| 1 | |
| 6 | |
| 4 | |
| 2 | |
| 1 | |
| 6 | |
| 1 | |
| 6 | |
| 1 | |
| 6 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 11.3 |