HomeMy WebLinkAboutBlower Door TestClient:
Rob Schneider
Home tested:
182 Kingbird Dr.Glenwood Springs Co.81601
To whom it may concern;
Blower Door testing Results:
RE:air leakage Testing
A completion depressurization air leakage test was performed by Elan B of NZB/Building Performance
Contractors on 12-3-25.The air leakage rate was:
Main house all areas and garage -1987 CFM 2.7 ACH @50PA
Both pass the code requirements up to 2021.
2009 Code requires less than 7 ACH.
2015 Code requires less than 3 ACH.
2021 Code requires less than 3 ACH.
Duct Leakage testing
N/A -Not requested (FYI -a/c unit is in thermal boundary)
Mechanical ventilation should be used.This is especially important at times of high occupancy
and high interior humidity level (showers,cooking,etc)
Explanation of ACH:
CFM50:This is the airflow (in Cubic Feet per Minute)needed to create a change
in building pressure of 50 Pascals.CFM50 is the most commonly used measure
of building airtightness.
ACH at 50 Pa:The Air Changes per Hour (ACH at 50 Pa)is another commonly
used measure of building airtightness.ACH at 50 Pa is the number of complete
air changes that will occur in one hour with a 50 Pascal pressure being applied
uniformly across the building envelope.ACH at 50 Pa is a useful method of
adjusting (or normalizing)the leakage rate by the size (volume)of the building.
ACH at 50 Pa =(CFM50 x 60)/building volume in cubic feet.
Notes;House is 43,048 cubic feet including the crawler.Very clean and easy to walk around,everything looked good to the eye(no holes or missing hardware)and
this is the first time that Rob has built a hybrid insulation house (2-3”spray foam and the rest is batts)floor and rim are well insulated
.
Richard Backe
PO Box 261
Carbondale,Co 81623
970-379-4198
End of report