All Discussions Tagged 'air' (11)

Discussions Replies Latest Activity

Basing air exchange on house volume??

I have long objected to including a basement volume when calculating air exchange as it just doesn't leak like the rest of the house.  In f…

Started by Bud Poll

17 Jan 8
Reply by Dennis Heidner

Cellulose As An Air Seal

I often hear people proclaim that a thick layer of cellulose will seal all of those air leaks below, thus eliminating the need to dig throu…

Started by Bud Poll

14 Dec 7, 2014
Reply by Bpb Farmer

Air Source Heat pump or mini-split efficiency

Greetings everyone!     I have a technical questions I hope I could get some feedback! I understood that air source heat pumps are very ef…

Started by Luis Hernandez

1 Apr 30, 2014
Reply by George J. Nesbitt

Calculating BTU lost per cfm leaks

Hi everyone,     A couple of my colleagues were discussing the benefits of air sealing, when I was asked if I could quantify the actual va…

Started by Luis Hernandez

23 Feb 1, 2014
Reply by Dmitri A Martin

Hot air language

One of the objectives of my many discussions on "why hot air rises" has been to change the way we describe that process.  The reason I beli…

Started by Bud Poll

14 Oct 25, 2013
Reply by Ed Minch

Cooling His Room With a Big Refrigerator - What is Wrong with That?

       It was very hot this July 4th for Peter when his room AC broke down.  Nothing taste better than a cold beer from the refrigerator.  …

Started by Perry Ning

5 Sep 14, 2013
Reply by Perry Ning

Boxing and Insulating Around Non-ICAT Cans

I have a client with 16) 4" halogen recessed light fixtures in the attic. I'd like to cover the cans with air tight, fire rated boxes. The…

Started by Bachi Brunato

9 May 31, 2013
Reply by peter chang

Misting Aeroseal in Pressurized Home = Amazing Air Sealing Innovation

As a training program manager for a non-profit, I am often too busy managing my program to catch all of the latest and coolest innovations…

Started by George Kopf

0 May 24, 2013

New furnace causing interference with AM radio?

I just wrapped up a quality assurance site inspection where I heard something unusual. The homeowner had a new furnace & central air co…

Started by Nick Helmholdt

9 Mar 25, 2013
Reply by Nick Helmholdt

Tired of climbing ladders and reaching to find air leaks during blower door test I have a solution!!!

Yes, a thermal image camera is a good way, but a better way to instantly see the leak and the cfm amount of the leak-- try using the Alnor…

Started by Damien Herold

17 Nov 26, 2012
Reply by Damien Herold

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Dale Pickard replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"Hans, The car manufacturer's are doing it with mass flow sensors and oxygen sensors…"
5 hours ago
Dale Pickard replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"I was trying to avoid naming manufacturers, but I was going by the published information for the…"
5 hours ago
Eric Kjelshus replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"I look at this not about AFUE,  but flue gas dewpoint.  If your burn rate is rotting the…"
7 hours ago
Bob Blanchette replied to Kirsten Richnavsky's discussion Crawl spaces and attics: OSHA to implement new rule on confined spaces
"Keeping HVAC equipment out of attics should be part of the new code. "
8 hours ago
Linda Wigington replied to Linda Wigington's discussion Weigh in - Honorable Mention? 2nd Base? Half-Way There? 50% Better? On the Path? in the group 1000 Home Challenge
"Nickie -  Good points. I think it is easy enough to flag or designate projects that achieve…"
9 hours ago
Morgan M Audetat replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"Though Viessmann is relatively unique in the application of Lambda technology to condensing…"
11 hours ago
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18 hours ago
Eric Kjelshus replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"The heat exchanger gets burnt out, if presser is to high or if mix is to rich, then I see holes in…"
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