Contact Us

Use the form on the right to contact us.

You can edit the text in this area, and change where the contact form on the right submits to, by entering edit mode using the modes on the bottom right. 

3799 Main St. #87024
Atlanta, GA 30337
USA

773.398.5288

Advanced residential construction and home improvement consulting and owner's advocacy in Atlanta, using the latest building performance diagnostic and modeling techniques and tools. Airtightness, insulation, HVAC, ventilation, moisture, and air quality and EMF consulting for homeowners and building professionals alike.

Videos/Podcasts/Articles

Home performance articles and stories from the field with internationally respected building forensics guru Corbett Lunsford at the Building Performance Workshop. Hear new episodes of the Building Performance Podcast, see new videos from the Home Performance YouTube channel, and learn all about how diagnostic testing (more than an 'Energy Audit') can make home improvement and new home construction a proven process!

Filtering by Tag: blower door

Retrofit Series Continued: Addition and Progress Test

Corbett Lunsford

Corbett shows the (slow) progress on the 1960's performance retrofit with the install and testing of the addition. Featuring ZIP System paneling.

See the other videos in this series here:
https://youtu.be/iciAPohuLNM
https://youtu.be/YDXk8ObHBWU

Using Infrared to Find Holes in Your House

Corbett Lunsford

Corbett Lunsford loves infrared cameras (he has six of them, including this FLIR One Pro) but they're not the whole story. Pair your diagnostic tools to be a mastermind of home performance.

Learn more at http://HomePerformance.training

Home Improvement to Tune Performance: Test-In

Corbett Lunsford

Corbett runs a full enclosure diagnostic on a one-story ranch for his family before planning and performing the improvements on vented crawlspace and attic.

Our Atlanta High Performance Home Build Part 1: Basis of Design

Corbett Lunsford

Corbett talks through the basis of design for his family's upcoming house construction in Atlanta, GA. Subscribe to stay tuned for videos during the build! To learn more about the high performance building products being used, click below:
475 HIGH PERFORMANCE BUILDING SUPPLY
GEORGIA-PACIFIC FORCEFIELD SHEATHING
ROCKWOOL INSULATION
FANTECH VENTILATION
MITSUBISHI ELECTRIC COOLING & HEATING
ULTRA-AIRE VENTILATING DEHUMIDIFIERS
CHRONOMITE POINT-OF-USE WATER HEATERS

Teaser for Home Diagnosis Season 1 (eps 3-6)

Corbett Lunsford

See bits of four episodes from Home Diagnosis Season 1! More at: https://HomeDiagnosis.tv

'Home Diagnosis' TV Series Finished Shooting!

Corbett Lunsford

That's a wrap on season 1 of Home Diagnosis! You can expect the episodes to be finished by our friends at ECG Productions in the coming months, to air on PBS stations everywhere by this coming winter! MASSIVE THANKS TO OUR VISIONARY TEAM OF SPONSORS:

How to Teach Builders about Home Performance

Corbett Lunsford

Corbett presented for Broan-Nutone and Fantech at the International Builders Show (IBS) 2018 in Orlando, and in case you weren't there, here it is! Learn all about why builders, manufacturers, contractors, insulators, HVAC techs, and others in the construction industry are starting to care about, and act upon, the metrics that come from home performance testing.

Thanks as always to the sponsors who are leading the charge in making measured performance mainstream with 'Home Diagnosis' coming to TV screens soon! 

How to Teach Home Performance to Home Owners

Corbett Lunsford

See how Corbett teaches home performance to the uninitiated after having given this presentation 214 times across the U.S. on the Proof Is Possible Tour. Special thanks to the tool companies and all other sponsors of the upcoming TV series 'Home Diagnosis' who have invested in making home performance a mainstream topic:

Tour the Off Grid Homestead with Chris Laumer-Giddens

Corbett Lunsford

Last week I made my first site visit to the mountains of North Carolina to start performance testing the #OffGridHomestead. This is an uber-homebuild with LG Squared Architects (now also LG Cubed Builders) and Chris Laumer-Giddens has a lot to show us, even at this rough in stage, with saws running and tractors rumbling around.

DEAR CORBETT: Multifamily Blower Door Testing Nuances

Corbett Lunsford

Good day Corbett,

I wanted to let you know, that I really enjoy your approach to the whole building science and your building performance workshop website. I am relatively new as a Resnet Rater and the county where I live is Collier County in Florida.

They recently adopted the new code standard set by the state. My question relates to multifamily condo units. I have a client that did renovations to a 2,500 sq. ft. penthouse condo and the front door to the unit is I a common area. The county wants them to perform a blower door test in order to obtain their certificate of occupancy.

I realize this would be a compartmentalize test, since I can only have access to the unit they renovated for their client. Knowing that I will encounter not only leakage to outside but also internal leakage between units. I was wondering what the best approach would be to ensure a successful test. Collier County requires between 3 ach and 7 ach for a test to pass code.

Any information would be appreciated. Thanking you in advance.

Best Regards,
Norm Giguere
www.blowerdoorenergyexperts.com


Dear Norm-

Thanks for your question, it's a good one! First off, you should be fine if they did a good job with the renovations- 7 ACH50 is not terribly hard to achieve.

When you set up your blower door at the front door of the condo, you'll blow air out into the common hallway, so you want to make sure all possible windows/doors in that hallway are open to the outdoors. Use the emergency exits if necessary (make sure maintenance knows what you're up to).

You'll be testing the condo's leakage to everything outside of it, including the downstairs unit, but that's intended. They really will have air leaking between the two condos, if there are leakage pathways, and you want to be testing for that and including it in your blower door test result.

Ask your code official if they want the result to pass the residential code or commercial code, because you have to test at 75 Pa in commercial. I always advise doing a multipoint test (get the flows on at least two pressures, like 25 Pa and 50 Pa) so you can extrapolate the 75 Pa if anyone ever wants it in the future. Saves you a trip.

AS AN ADDED BONUS, consider doing a Zonal Pressure Test on the unit downstairs, to see how much the blower door is affecting it. Always nice to have more data than you need.

Happy Testing,
Corbett