Ed Minch
  • Chestertown, MD
  • United States
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Duct testing in a conditioned crawlspace
13 Replies

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 a conditioned crawl with ducts in that crawl.  There is an…Continue

Tags: testing, duct, crawl, conditioned

Started this discussion. Last reply by Ed Minch Nov 25, 2011.

 

Ed Minch's Page

Latest Activity

Ed Minch replied to Roy Sakamoto's discussion Whole house air leakage
"This is definitely worth investigating if you are an air sealer and are forced to use the ACH50 metric. First look at a 1500 ft2 ranch on a slab at 50'X30' with an 8' ceiling.  It has a volume of 12,000 ft3, and a surface area,…"
Apr 1
Ed Minch replied to Luis Hernandez's discussion Open cell foam and cellulose... Can they work together?
"Sean I am still wondering why we need airsealing in the center of a piece of plywood that is already airtight.  The money would be better spent on a layer of rigid foam on the outside so cut down on thermal bridging and to add R-value."
Mar 28
Ed Minch replied to Roy Sakamoto's discussion Whole house air leakage
"Dob Do the math on that one - any volume based measure favors big houses because the volume is not what is leaking - the surface area is.  A small house has more surface area per ft3 than a big house, so gets penalized.  I have measured…"
Mar 27
Ed Minch replied to Roy Sakamoto's discussion Whole house air leakage
"Don H- +1 to everything you said.  Something to add is that it depends entirely on the metric you use. If you use ACH50 which is becoming the norm where the 2012 IECC is used, you must seal every square foot of envelope on a 1200 ft2 house on a…"
Mar 27
Ed Minch replied to Luis Hernandez's discussion Open cell foam and cellulose... Can they work together?
"Why not just seal the actual leaks in the attic floor, then blow with cellulose and save a bunch of money?  This is similar to flash-and-batt in exterior walls and I have yet to understand why this is done.  My theory is that the closed…"
Mar 27
Ed Minch replied to Kent Mitchell's discussion Fire sprinklers & air infiltration?
"This is not the only problem with sprinklers.  Any pipe in the attic with water in it must be protected from freezing, and the standard practice in the mid-Atlantic has come to be called "tenting".  The insulator will cover the…"
Mar 20
Ed Minch replied to Griffin Hagle's discussion Which is the valid draft test?
"I see what you mean - but the title of the thread is: Which is the valid draft test, noir which is the valid CAZ test "
Mar 12
Ed Minch replied to Griffin Hagle's discussion Which is the valid draft test?
"Ted Still too cryptic"
Mar 12
Ed Minch replied to Griffin Hagle's discussion Which is the valid draft test?
"A pitot tube on an airplane is pointed forward because you want to measure air speed and if it points into the wind it measures, well, the speed of the air. Draft in a heater is different - we aren't looking for MPH but Delta P.  These are…"
Feb 28
Ed Minch replied to Patrick Michaelyan's discussion Insulating the "walls" of a mansard-style roof.
"Robert It seems that you describe filing the entire cavity between the vertical interior wall and the steeply pitched lower roof with insulating material - is this correct?  How much insulation is this?  How do you ensure that you have…"
Dec 21, 2013
Ed Minch replied to Patrick Michaelyan's discussion Insulating the "walls" of a mansard-style roof.
"Two things First, the house looks new enough (after 1980??) to already have fiberglass in the wall. Second, I am not sure, but I think you are misunderstanding the construction.  Note that the angled surface with…"
Dec 12, 2013
Ed Minch replied to Mike Kandel's discussion June's Stump the Chump: What's Wrong with this Picture?
"David If it were the same exterior wall we wouldn't be able to see the uninsulated ceiling. I believe this is an interior shot.  Good call on the old framed garage door opening, but that would support my interpretation."
Jun 14, 2013
Ed Minch replied to Mike Kandel's discussion June's Stump the Chump: What's Wrong with this Picture?
"Nothing is wrong.  The back wall is common to the house and it is cool in the house.  The angled wall below the ceiling is warmer because it is partially thermally connected to the hot attic."
Jun 13, 2013
Ed Minch commented on Christopher Morin's blog post Selling with Rebates: The Simple Payback
"Following "savings" from a small sample can be very misleading.  I have been involved in scorekeeping of programs by three university research groups and this is about the sample size they requested 20 row houses 20 2 story houses 20…"
Jun 7, 2013
Ed Minch replied to Stan Kuhn's discussion How To Deal With Sprinkler Piping Installation in the group Home Energy Ratings
"We air seled some condos a few years back and their sprinklers were in a cathedral ceiling with scissors trusses.  One of techs was smart enough to take a picture and tell the job super there there was on pipe that was especially vulnerable -…"
Jun 7, 2013
Ed Minch replied to Stan Kuhn's discussion How To Deal With Sprinkler Piping Installation in the group Home Energy Ratings
"The real solution is to say to the sprinkler guy - "I will not force the insulator to take responsibility for your pipes freezing - install them in the walls so all pipes are inside the heated shell" Ed Minch"
Jun 6, 2013

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RESNET QAD, BPI BA, EP
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At 7:12am on December 24, 2010, Diane Chojnowski said…

Hi Ed,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the
place for you!

Don't forget to upload your profile photo. And, add your location on our Member
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Diane, HEP Moderator

 
 
 

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