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: 175

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

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Ryan Rutledge just added their location.
(via Member Map)

19 minutes ago
Profile IconPaul DelVaglio, Michael Glovre, reflintorm and 1 more joined Home Energy Pros
1 hour ago
Nate Adams commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"Interesting conversation. David, I completely understand where you are coming from. To me it's…"
3 hours ago
John Proctor commented on Kurt Shafer's blog post What is your opinion about members promoting products here?
"Kurt: So my question is how does your device work? PSC motors generally do not reduce their…"
8 hours ago
John Proctor commented on Christopher Morin's blog post How do You Test a TXV?
"Correction 32 is the melting point, not the saturation temperature."
8 hours ago
Richard Beyer replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
""I have no interest in bantering or arguing with you." AGREED! I look at these…"
10 hours ago
tedkidd replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Todd, it appears Richard is more about getting the last word than about learning a new thing.…"
10 hours ago
Todd Collins replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Richard,  I don't believe I am missing any points.  As I mentioned... I have no…"
10 hours ago
Richard Beyer replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Todd, Your missing the point. I can only suggest for you to read all the links attached within that…"
11 hours ago
Tom Conlon replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Excellent snapshot, Griffin. You didn't happen to notice the fan manufacturer's name on…"
12 hours ago
Brandon Walton replied to Brandon Walton's discussion 12 Things Every Home Performance Contractor Should Have on Their Work Truck
"Thanks Don! "
13 hours ago
Griffin Hagle replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"I was aware of but unfamiliar with them until moving to Southern California in 2012. After seeing…"
17 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service