Blower Door Diagnostics

Most weatherization professionals know how to run a blower door test. Far fewer know how to use it to actually find where a building is leaking — and make confident, defensible decisions about what to do next.

This course teaches energy auditors and weatherization technicians how to go from recording CFM50 results to reading the full picture of how a building is moving air, where the major bypasses are hiding, and what the pressure data is telling you to do about it.

  IN PERSON
  INTERMEDIATE LEVEL
  12 HOURS
blower door and duct testing
WHY TAKE BLOWER DOOR DIAGNOSTIC TOOL TRAINING

Benefits of Blower Door Diagnostic Tool Certification

Most weatherization professionals know how to run a blower door test. Far fewer know how to use it to actually hunt down where a building is leaking — and make confident, defensible decisions about what to do next. This course closes that gap.

Find the Leaks That Matter Most

Learn to use pressure differentials to locate hidden air pathways — top plates, plumbing chases, balloon framing, dropped soffits, rim joists, and crawlspace connections.

Understand What Zonal Pressure Readings Mean

Apply the Rule of 50 and the Half-Pressure Rule to determine whether an attic, crawlspace, garage, or mechanical space is behaving like inside, outside, or something in between.

Verify What You Find with the Right Tools

Use chemical smoke, theatrical fog, infrared cameras, and pressure pans under blower door load to confirm air movement and duct leakage — then document findings in a way that supports clear crew direction and stands up to QCI review.
 
 

""I thought I knew how to use a blower door. This course showed me I was only using about half of what it can do. The zonal diagnostics module alone changed how I write every scope of work."

- Justin Nelson

HOW IT WORKS

How to Complete the Blower Door Diagnostic Tool Certification

You can get the Blower Door as a Diagnostic Tool Certification in just three steps!
course icon

1. Take Our Course

Day 1 covers pressure boundaries, safety considerations, manometer fundamentals, and a full introduction to zonal pressure diagnostics.
checklist icon

2. Apply Learned Skills

You'll use smoke, fog, infrared cameras, and pressure pans under blower door load to identify and confirm air leakage and duct connections to unconditioned spaces — then document your findings and interpret what they mean for the scope of work.
award icon

3. Earn Your Certificate

Complete the knowledge check and course assessment. Finish the course and receive your Everblue Certificate of Completion.
TOPICS

Get 6 Months Access

To help you prepare for your certification exams, we provide 6 months access to our secure online learning portal.
BPI combustion safety testing

What You'll Learn

  • Thinking in Pressure Boundaries
  • Safety and Pre-Test Considerations
  • Manometer Fundamentals
  • Introduction to Zonal Pressure Diagnostics/span>
  • Hunting the Bypass — Guided Practical
  • Pressure Pan Testing

Request This Course

 
 

"The hands-on bypass hunting on Day 2 was unlike any training I've been through. We used smoke and infrared together under blower door pressure and found leakage pathways that would have been invisible otherwise. It's the kind of thing you have to see to understand."

- Jason Starnes

FAQs

Quick Answers to Your Blower Door Diagnostics Questions

Who is this class intended for?

This course is designed for energy auditors and weatherization crew technicians who already know how to run a blower door test and want to develop stronger diagnostic skills.

  

What are the prerequisites to take this course?

Yes — this course assumes familiarity with basic blower door setup and operation. Participants who have completed a basic blower door or weatherization fundamentals course will be well-positioned for this material.

  

Where exactly will the course take place?

This is an in-person course. Training location and scheduling details will be confirmed at registration.

  

What do I receive upon completing the course?

Participants who complete all course requirements receive an Everblue Certificate of Completion. You'll also have access to recorded video and online resources to support your continued learning.

  

Can my organization schedule a group session?

Yes. Everblue offers group training solutions for organizations that need to train a team. Contact us to discuss scheduling, location options, and pricing for group enrollment.