All Discussions Tagged 'duct' (8)

Discussions Replies Latest Activity

Commercial duct testing

Hello all, I am a BPI BA, HERS rater and QC inspector. I cant find a ton of information on this topic and I wanted to see what others had t…

Started by Shaun

11 Jun 24, 2016
Reply by Glen Gallo

How does Cycles Per Hour affect real world AFUE?

Some claim that modern furnaces have minimized off cycle losses to the point they no longer matter. Oversizing has become a comfort issue r…

Started by Bob Blanchette

12 Dec 30, 2014
Reply by Bradford E. White

Think of the house as a really big duct

There is an article in the June 9 issue of ACHR News magazine that might help a lot people understand why the house is really part of the d…

Started by Frank Spevak

0 Jun 13, 2014

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

Duct Cleaning? Good value or a waste of money?

I have lots of my auditing customers who ask me about duct cleaning, and if they should do it.  It seems like the only way to get them real…

Started by Gordon Smith

21 Dec 22, 2012
Reply by Robert H

Section 403.2.2 of the 2009 IECC

We've received a lot of calls of (panicked) HVAC contractors on this new code requiring duct leakage testing. Can anyone shed some light on…

Started by Krista & Matt

11 Mar 22, 2012
Reply by Bob Blanchette

So have you experienced the New TEC Trainer?

Just curious if any trainers/students have experienced the new TEC Trainer form The Energy Conservatory.  If so, we'd loved to hear feedbac…

Started by Krista & Matt

0 Jan 26, 2012

Duct testing in a conditioned crawlspace

Concerning duct testing in crawlspaces (this is for new houses for Energy Star, but will be the same for existing houses):I have a house on…

Started by Ed Minch

13 Nov 25, 2011
Reply by Ed Minch

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How would you insulate this roof?

Started by David Butler in General Forum. Last reply by David Butler 5 hours ago. 34 Replies

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Latest Activity

David Butler replied to David Butler's discussion How would you insulate this roof?
"Sean Lintow proposed rails and clips (re: first comment in this discussion), but in the context of…"
5 hours ago
Brad Cook replied to David Butler's discussion How would you insulate this roof?
"I missed where the suggestion for rails came in. The plywood would not need any rails. 4+ inches is…"
9 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"I'm a little confused about the necessity and purpose of using support rails if working on…"
9 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"If you insulate master bedroom and family room from below, you definitely need more R-value than…"
9 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"Brad, I was only talking about using EPS between the ridges, if necessary, to conform to bolts.…"
9 hours ago
Brad Cook replied to David Butler's discussion How would you insulate this roof?
"It kind of depends on the PIC. Not all insulation is made the same. Here in VT (and all of New…"
10 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"Filling those shallow valleys with rigid foam not only prevents primary foam panels from…"
10 hours ago
Brad Cook replied to David Butler's discussion How would you insulate this roof?
"Bill, you just posted a number of responses in different areas of the thread. I will try to respond…"
14 hours ago

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