Dense Packed Ducts

Return ducts used floor/ceiling joist and balloon frame wall cavities for return air. Once the walls were insulated the furnace suffocated and pulled all return air from the basement. The worst case CAZ was -12.3pa causing the furnace to backdraft and the basement to reach 97ppm of CO.

Views: 238

Comment

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

Comment by Joseph J. Ilacqua on November 30, 2012 at 11:50am

Yes in my location in upstate NY this is a common practice. Even more common while dense packing tuck under garage ceilings. Be carefull and beware. That is why we do constant pre and post job inspections. Sometimes even with a great inspection these can be missed. Learn from someones else's mistakes and try not to make the same one.

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Laurie DiDonato updated an event
Thumbnail

Become a HERS Rater with the NE HERS Alliance this fall! at Classroom Component at Energize Connecticut Center

September 19, 2016 at 9am to October 21, 2016 at 5pm
Online Component: September 19th-30th - Weekdays 9am-12pm5-Day Classroom/Field Training:October…See More
13 minutes ago
Melissa Baldridge posted a discussion

IECC 2012 & 2015 Compliance & HRVs

 I’m failing IECC 2012 with the HRVs we’ve been using – Honeywell .  (See specs below that I…See More
1 hour ago
Chris Woods replied to Steve Mann's discussion Eliminator EF400 Smoke Machine in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Is this still available?"
1 hour ago
Melissa Baldridge replied to Melissa Baldridge's discussion ENERGY STAR - Slab Insulation
"Thanks, John.  That's helpful.  And yes - I've seen projects with perimeter…"
1 hour ago
Jan Green commented on Diane Chojnowski's group Facebook Pages
"Great to see FB pages here!   "
1 hour ago
Brett Little replied to Rob Madden, Solar Home Broker's discussion Indoor Air Quality Monitors and Meters
"Great! Email me at Brett.Little@greenhomeinstitute.org"
3 hours ago
Quinn Korzeniecki replied to Larry Nissman's discussion Foam insulation on attic floor
"I'll send you a message on here for more details. Keep an eye on your inbox!"
4 hours ago
Larry Nissman replied to Larry Nissman's discussion Foam insulation on attic floor
"Hi Quinn. I'm first trying to find out if this is considered a bad insulation installation.…"
4 hours ago

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service