Blower Door Course

Brantley May

Building Scientist, Indoor Environmentalist

Jessica Azarelo

Home Performance Professional

Krishna Das Achath

Professional Engineer, Council-Certified Indoor Environmental Consultant
Finally learn everything you need to know to perform blower door testing and why it's such an important tool. From calculations, to installation and special techniques, this course will make you a residential blower door testing master.

What's included?

  • 25 On-demand Videos
  • In-the-field examples
  • Advanced testing tricks
  • Video Instruction for Installation
  • Blower Door Test Report Template

Think Outside the Box

Blower door testing is an obvious choice for checking air-tightness in new buildings and renovations. But it can be used for so much more, from energy auditing to indoor air quality investigations. This course walks you through the possibilities of blower door testing, why it's important, and how to run the tests.

Understand the Science

Get a fundamental understanding of air pressure and how it all works. Without the core concepts of physics, you won’t be able to harness the true value of blower door testing. 
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What am I going to learn?

This is an all inclusive course. By the end of this course, you will have all the knowledge needed to get started on blower door testing.

What makes this course unique to other blower door courses is you get to learn the why behind running the blower door. Knowing how air infiltration impacts indoor air quality, energy efficiency, longevity, and comfort is crucial to putting passion into our work.

Air Pressure Basics

  • What is air pressure?
  • How to calculate air volume
  • Concepts of air infiltration
  • Is there such thing as "too tight?"
  • Issues with air infiltration

Interpreting Data

  • Calculating air changes per hour.
  • Understanding CFM
  • Qualitative vs. quantitative results

The Practical

  • Installation of blower doors
  • Common areas of air infiltration
  • Assessing unvented attics
  • Safety Considerations
  • How else can I use a blower door?

The Extra

  • Blower Door as a forensic tool.
  • Pressure pan testing
  • Zone pressure testing
  • Case study and optional learning
  • Free resources (checklists, formula sheets, personalized suggested youtube videos, etc.)



    Certification included

  • Certificate of Completion

    Approved 4-hour continuing education for:
    • ACAC: CRIE, CIE, CIEC
    • ACAC: CSMI, CMI, CMC
    • ACAC: CRMI

Course Lessons

Meet the instructor

Brantley May

Brantley is a Building Scientist and Council-Certified Indoor Environmentalist with a specialty in Mycology and certified by the McCrone Research Institute for the examination and identification of fungal spores via microscopy.

Brantley is certified by the Building Performance Institute as a Building Analyst, Building Envelope Professional, and Infiltration and Duct Leakage Expert. Brantley also holds several certifications related to identifying Mycotoxins, Water Damage, Odor Control, Structural Drying, Infectious Disease Control, and Energy efficiency issues.

He is a certified curriculum creator and trainer of prep courses for the ACAC’s Mold Remediation and Indoor environmental certification exams and is currently a university student of Mechanical Engineering.
Patrick Jones - Course author
Meet the instructor

Krishna Das Achath

Krishna is a Professional Engineer with a Masters in Mechanical Engineering. He specializes in psychrometric and air pressure building forensics.

  • Registered Professional Engineer (FL PE 81966, TX PE 108442)
  • Certified Geo-Exchange Designer (CGD-In Traning)
  • CIEC (Certified Indoor Environmental Consultant)
  • CMRS (Certified Mold Remediation Supervisor)
  • State-licensed Mold Assessor and Continuing Education Provider
  • LEED AP
Patrick Jones - Course author
Meet the instructor

Jessica Azarelo

Jessica is a dedicated Home Performance Professional with a passion for creating healthier, more efficient living spaces. With certifications from the Building Performance Institute (BPI) as a Building Analyst, Building Envelope Professional, and Infiltration and Duct Leakage Expert, she brings a wealth of expertise to the field.

Jessica specializes in energy efficiency and indoor air quality, helping homeowners and industry professionals alike understand how to optimize building performance. Her commitment to innovation and continuous learning keeps her at the cutting edge of the industry, ensuring she delivers top-tier consulting, hands-on training, and real-world solutions that make a lasting impact.

Whether she’s working directly with clients or educating the next generation of home performance experts, Jessica’s knowledge and enthusiasm drive real results.
Patrick Jones - Course author

Frequently asked questions

Do I need prior knowledge of blower door testing before taking this course?

No! This course is designed to teach you the fundamentals of blower door testing from the very beginning.

How long do I have access to the course content?

Once purchased, you will have 60 days to consume all the content in the course. The course is designed so that you can work on bits and pieces at a time, or knock it out in two days! It's completely up to you.

After this course, will I be ready to go out in the field?

This course teches you everything you need to know about blower door testing and the basics of air pressure in order to get started. We always recommend getting some field training in before monetizing the service. We want to make sure you are trained hands-on with the equipment. This ensures that the client gets the best experience while also reducing mistakes and liability for yourself. I remember when I got my first blower door, I did blower door testing on all of my family and friends houses. This helped me with some of the kinks you will run into before providing it as a service(for example, what do I do if the blower door doesn’t fit on these custom doors, etc.) But I can assure you, after this course, you will be in a great position to be one of the best blower door testers because you understand the fundamentals and most importantly, you will know why you're running a blower door.

How do I receive my certificate of completion?

Once all the course material is completed, a certificate of completion will be automatically issued to you.