Manual J Default Air Leakage Inputs vs. Blower Door Test ACH50

I'm pretty sure the awesome folks who created Manual J (like Hank Rutkowski- hear my interview with him here), and the softwares we use to run the calculations (Elite RHVAC, used here, and Wrightsoft) do not have a lot of personal experience with the test dynamics of home enclosures, and may never have actually used a blower door before. Here's a demonstration of why it's so important to respect the blower door if you're doing HVAC design for residential construction or home improvement.

Learn to perform and analyze Blower Door and Duct Tightness Tests in my 1 Day Training at: https://buildingperformanceworkshop.com/det-verifier

There are two blower door brands, both available at: https://www.trutechtools.com/system-blower-doors-and-duct-testers.html

See a tour of a full Manual J report below:

Training Week in Advanced Home Performance Testing and DET Verifier Certification

I'm so excited to start training in our new state of the art house! Here are the details on how I'm running live trainings- hope you'll join us. Get in touch if you have any questions, either by commenting below or contacting me directly via this website.

Day 1: Ventilation Design and Installation Techniques (4 hours)

Day 2: Advanced HVAC Diagnostics (4 hours)

Day 3: 1-Day Blower Door and Duct Testing Certification - DET Verifier (8 hours)

Day 4: Advanced Envelope Diagnostics (4 hours)

Save your seat for the upcoming trainings at: http://BuildingPerformanceWorkshop.com/training

Newest DET Verifier Certified in Georgia!

Never taught a DET Verifier training for one before- this should be interesting!

In a customized 1-on-1 COVID-adapted class, Corbett Lunsford trained, examined and certified Treondras Manning, HVAC technician and Georgia’s newest certified Duct and Envelope Testing (DET) Verifier. As a DET Verifier, Treondras is certified to perform blower door tests and duct tightness testing on new construction and renovations in the state of Georgia. He is also one of Corbett’s Mastermind students, and is helping homeowners in the Atlanta area tune the air quality, comfort, durability and energy efficiency of their homes with his building science and diagnostics expertise.

DET Verifier Trainees are taught the accepted blower door and duct leakage test protocols from the book ‘Home Performance Diagnostics: the Guide to Advanced Testing’ written by trainer Corbett Lunsford

Treondras Manning, right before he received his well-deserved certification as a Georgia certified DET Verifier

Watch DET Verifier Treondras Manning test Corbett’s heat pump cabinet for duct leakage in the high performance house his family is building.

Testing Ducts During Construction

My Mastermind student Rashaun joins me to test my custom return filter box plenum with a Retrotec DU300. I used enough mastic to swim a camel, so we’ll see how tight my ductwork is. Sheet metal fabricated with Malco sheet metal tools.

Bubble Experiment with a Blower Door

To try and seal the last nasty little leaks in the Mento 3000 roof membrane, Corbett and his Dad try an experiment using soapy water and a flipped-around Retrotec blower door.

How the rain screen was installed: https://youtu.be/ZTfVb9NXAOc

How the Mento 3000 was installed: https://youtu.be/hOh28nYrCzI

Learn more at: http://HomeDiagnosis.tv/atlanta-homestead

Hurricane Stress Test for Homes

'HOME DIAGNOSIS' hosts Grace and Corbett Lunsford are first-time home builders, but they're willing to push the limits where other builders would run away screaming. Check this out, it's pretty wild- never been seen before onscreen, and soon to be seen on TV in Season 2!

Become a member and help this show get made: https://Patreon.com/HomeDiagnosisTV

More about this unique build: https://HomeDiagnosis.tv/atlanta-homestead

Psychology and High Performance Homes

Even when you build a perfectly performing house, your client may feel like the house is exacerbating sickness. Know that a huge part of home performance contracting is knowing your way around psychology and adult education- express yourself with performance testing data AND with listening and emotional connection.

Testing Custom HVAC Grilles with a Blower Door

Watch home performance testing guru Corbett Lunsford test the pressure, airflow, and velocity performance of some beautiful custom carved wooden return grilles, using just a blower door kit, a homemade box, and an anemometer. Grilles made by Stellar Engraving by Vencor Inc. (http://vencorinc.com). Test performed out of the back of Corbett's pickup truck in Atlanta GA! Yeehaw!

Home Performance Mastermind Minute: Week 6

Effortless does not mean "don't try hard". It means work your ass off and make it look easy. Use techniques and tools to be all you can be, Masterminds.

#TinyLab Tour Ends: Lessons Learned

Grace and Corbett Lunsford are happy to not be moving every week, like they did on the Proof Is Possible Tour! Hear some of the ups and downs, and what they learned on this 13,000 mile, 26-state tour of the U.S. promoting measured home performance.

Building Pro Review of the Proof Is Possible Tour

Hear from BPI Certified Pros Ryan Weitzel of FLC Energy and Neil Comparetto of Matrix Mechanical about the pro workshop portion of the Proof Is Possible Tour. Come study advanced techniques and tools for home performance diagnostics with Corbett Lunsford, the guy who wrote the book on it!

HVAC Pro Review of the Proof Is Possible Tour

Hear from Matt Adelman of Princeton Air Conditioning about the pro workshop portion of the Proof Is Possible Tour. Come study advanced techniques and tools for home performance diagnostics with Corbett Lunsford, the guy who wrote the book on it! http://ProofisPossible.com