A No Fuss, NO TOUCH BPI Infiltration & Duct Leakage Certification Training CEU’s Available

About this product

Includes Testing Fees! Testing will NOT be on the same day as the Training!

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.



NEW Special Mixed Media Training: This course is being delivered via GOTOWebinar. Students must download GOTOWebinar on their smart phones for this course. Students must also have use of equipment (Blowerdoor and a duct tester) for the exam and it is preferred for the training for best results. All training and testing will be held remotely, there is no need for in person training or testing. Students will be able to use their own home as the test house regardless of the equipent present. Hope will configure the testing to meet BPI proctor’s rules and regulations for this current time period.


This scheme defines the scope of the Infiltration & Duct Leakage certification to include specific
diagnostic testing and applied data from whole house infiltration and duct leakage testing. This
certification is not intended to be a whole house diagnostic, audit or assessment and consists of three
main components: whole house infiltration testing, total distribution system leakage, and distribution
leakage to the outside. 

During this course, you will learn about:

• Construction Math

• Airflow

• Blower Door & Pressure Diagnostics

• Tightness Verification

• Duct Testing

• Duct Tightness Verification

2 hours of online learning followed by in-person training & exam.

•  H4H provides all testing equipment.

•  Registration fee includes training and testing.


Field Guide

Please review the Field Guide PDF icon for the Infiltration and Duct Leakage (IDL) certification.

Exam Preparation

Candidates must take a field exam to become Infiltration and Duct Leakage certified.

Field exam: Hands-on field portion
Time limit: 1 ½ hours
Passing score: 85% or higher

Processing time for exam results: 2-4 weeks


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