When using the Duct Blaster I have found it necessary to seal the combustion air grilles on the furnace door and flue on an 80% afue gas furnace in order to obtain accurate leakage results. Any comments?

Views: 197

Reply to This

Replies to This Discussion

Far from my expertise, but there should be no connection between the combustion side and the conditioned air side.  The only thing I can think of would be duct side leakage inside the cabinet then accessing the combustion side through the air intake.  Of course there is a possibility of a cracked air exchanger, but not something you would run into on every unit, I would hope.  I'll be watching to see what the pros have to say.

Bud

Damien, if you do that, your results are inaccurate and of course the HVAC guy has an issue to find & fix

The duct test doesn't test just the ducts, but the whole air handling apparatus. The only exception is the version where the air handler hasn't been installed & then they are only allowed 4% leakage per the 2009 codes. With that said many municipalities don't accept that test & we simply won't perform it

RSS

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Profile IconPaul J Anzalone Jr, Jon Traudt and Jamie Medlin joined Home Energy Pros
14 hours ago
Jamie Medlin replied to angela stanzione's discussion Used Weatherization and auditing equipment for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Please let me know if the flowhood  still for sale. jmedlin@archonenergysolutions.com"
19 hours ago
Jamie Medlin joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
19 hours ago
Laurie DiDonato posted an event
Thumbnail

HERS Rater Training Discount: Register by 1/6/17 and Get $100 Off! at Energize CT Center, North Haven, CT

January 23, 2017 to February 3, 2017
Become a HERS Rater with the NEHERS Alliance!Online Component: January 23rd-February 3rd, 2017 -…See More
20 hours ago
angela stanzione replied to angela stanzione's discussion Used Weatherization and auditing equipment for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Yes, I do. Pictures are above. I have a newer fan, I have a frame in a case and I have panels."
22 hours ago
Tom Phillips replied to Bruce Ceniceros's discussion How effective are whole house air cleaners?
"re: costs:  I suspect the added UV & PCO & ESP has a big price tag but no clear…"
yesterday
David Baerg replied to angela stanzione's discussion Used Weatherization and auditing equipment for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Hi Angela, Do you have any fans left?  Frames?  Panels? Thanks, Dave"
yesterday
Hannah Wood joined Leslie McDowell, BPI's group
Thumbnail

Building Performance Institute (BPI)

BPI is the nation's premier standards development, quality assurance and credentialing organization…See More
yesterday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service