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Started By
Message
Help me understand my air leakage report
Posted on 7/14/20 at 5:29 pm
Posted on 7/14/20 at 5:29 pm
Just trying to find out if it’s good, okay, or problematic.
Air Leakage:
ACH50 - 2.96
ELA per 100 sf - 1.165
CFM50 - 1,604
CFM50/sf shell area - .212
Duct leakage:
To outdoors - 140 CFM @ 25Pa (3.91 / 100 sf)
Total leakage - 211
Total leakage (CFM25 / 100 sf) - 5.9
Total leakage (CFM25 / CFA) - .059
Appreciate it. This is the only part of the energy report that didn’t explain the numbers.
Air Leakage:
ACH50 - 2.96
ELA per 100 sf - 1.165
CFM50 - 1,604
CFM50/sf shell area - .212
Duct leakage:
To outdoors - 140 CFM @ 25Pa (3.91 / 100 sf)
Total leakage - 211
Total leakage (CFM25 / 100 sf) - 5.9
Total leakage (CFM25 / CFA) - .059
Appreciate it. This is the only part of the energy report that didn’t explain the numbers.
2
Posted on 7/15/20 at 6:06 am to AFtigerFan
How old is the house
Ach 50 should be below 3.0
CFM 50 is 1600+ that’s a little high means you are loosing 1600 cubic feet a min at 50 pascals if this is new construction sloppy builders have them smoke test prob wall plates not sealed Ck penetrations plumbing hvac electrical outlets doors windows
Ach 50 should be below 3.0
CFM 50 is 1600+ that’s a little high means you are loosing 1600 cubic feet a min at 50 pascals if this is new construction sloppy builders have them smoke test prob wall plates not sealed Ck penetrations plumbing hvac electrical outlets doors windows
This post was edited on 7/15/20 at 6:16 am
Posted on 7/15/20 at 7:51 am to AFtigerFan
How much did it cost you to have this done?
Posted on 7/15/20 at 8:56 am to FieldEngineer
quote:my builder had the entire energy efficiency test done prior to closing. I’m sure it’s factored into his bottom line but I don’t know how much it cost him.
How much did it cost you to have this done?
Posted on 7/15/20 at 9:48 am to AFtigerFan
Gotcha. I'd love to have this done on my home. I know I have a lot of areas that could be improved, but would like to be able to measure the improvements.
Posted on 7/15/20 at 10:05 am to FieldEngineer
quote:
Gotcha. I'd love to have this done on my home. I know I have a lot of areas that could be improved, but would like to be able to measure the improvements.
Same here. I’m going to try to get some recommendations for someone/companies in the Baton Rouge area next week.
Posted on 7/15/20 at 11:26 am to Cracker
quote:New build
How old is the house
quote:This is what I was looking for. The ACH 50 seems ok with it being right below 3, and it is listed online as being a "tight house."
Ach 50 should be below 3.0
CFM 50 is 1600+ that’s a little high means you are loosing 1600 cubic feet a min at 50 pascals if this is new construction sloppy builders have them smoke test prob wall plates not sealed Ck penetrations plumbing hvac electrical outlets doors windows
The CFM 50 was what I wasn't sure of, and I really couldn't find a lot of information on it. This makes sense since he is replacing a window and there is an area in the basement that shows a little daylight that they are addressing. Thanks!
Posted on 7/15/20 at 12:03 pm to AFtigerFan
New construction it’s code here and 1600 wouldn’t pass I think it has to be 1250 or below to pass building code. Most leaks are wall plates where the wall meets the plywood subfloor.
Cost is anywhere from 350.00 to 500.00
Cost is anywhere from 350.00 to 500.00
Posted on 7/15/20 at 12:46 pm to AFtigerFan
what company did the report?
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