Infiltration & Duct Leakage

Course Fee - $950.00
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.

Steps to certification

Take Our Course

Enroll in a open course to learn from one of our BPI certified proctors.

study for exam

Prepare for your final exam by studying practice questions given throughout the course.

Register for Exam

BSP Exam costs $109 and can be purchased directly from (

Course Overview

The BPI Infiltration and Duct Leakage (IDL) Certification is a single measure certification that meets IECC code compliance for builders, contractors and code officials who must perform duct leakage test, duct blaster testing and/or blower door tests on new construction or renovations to exisiting properties. Passing the exam (field exam only) verifies the candidates can conduct duct leakage testing, duct blaster testing and blower door tests to the ASTM E1554-07 standard and awards the candidate with the BPI Infiltration and Duct Leakage (IDL) Certification.

The BPI-IDL exam consists of three main components relating to new residential construction Air Infiltration and Duct Leakage: whole house air infiltration verification & testing, total air distribution system leakage and air distribution leakage to the outside.

Course Syllabus

Course Instructors

Mark Lera

Course Instructor

JOhn Mitchell

Course Instructor

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Mark Lera

Founder | Consultant

He stands behind his company mantra

John Mitchell