Your before-test result is 4000 CFM50. After two days of work, you measure a 21% reduction to 3150 CFM 50. Your after-test is checked using another blower door and they only get a 4% reduction to 3850 CFM50! What gives?

Retrotec CEO, Colin Genges gives his monthly Rants and Raves, see article below:

 

http://retrotec.com/RetrotecBlog/tabid/540/post/colin-rants-before-...

Views: 288

Reply to This

Replies to This Discussion

Good job putting up this post.It puts a better view on accurcy.I watched a video of a guy who had some serious time in this field and he says we should do 10 individual single point tests -EVERY TIME?.I think this puts that in perspective.

Appreciate the feedback William.  The piece comes from our newsletter, if you're not on the list and want to get on, just let me know. Thanks.

RSS

Groups

Latest Activity

Home Performance Coalition posted photos
7 minutes ago
Profile IconJames Hutto, Home Performance Coalition, Ken Goodrich and 1 more joined Home Energy Pros
33 minutes ago
Victor Rols Lindsay commented on Building Performance Institute's group Building Performance Institute (BPI)
"Does anyone know what/ how/ where in Ontario Canada to become BPI certified? The contact I have in…"
yesterday
Victor Rols Lindsay joined Building Performance Institute's group
Thumbnail

Building Performance Institute (BPI)

BPI is the nation's premier standards development, quality assurance and credentialing organization…See More
yesterday
Safe-R Insulation commented on Chris Laumer-Giddens's blog post Rock Wool Insulation for Floor of High Performance Tiny House
"Thanks for sharing this much information about roof wall…"
Saturday
Lindsay Bachman's 4 events were featured
Friday
Profile IconChris Hoskins and Ken Goodrich joined Home Energy Pros
Friday
Diane Chojnowski commented on Diane Chojnowski's event Better Buildings Peer Exchange Call: Home Improvement Catalyst: Keeping the Ball Rolling with Homeowners by Delivering More Value
"Hi Victor, All the BBRN Peer Exchange Calls are archived so you can listen anytime. Check out over…"
Friday

Photos

Loading…
  • Add Photos
  • View All

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service