HomeMy WebLinkAboutBlower Door Test
Page 1 of 1 9/12/2025
P.O. Box 1434, Edwards, CO 81632 | www.north39energy.com | 970.306.4237
Murillo Residence
Air Infiltration Report
Background
The project goal is to undergo testing at the final point in construction to determine if the unit
meets the IECC requirements for infiltration. North 39 Energy was contracted to perform a final
blower door test to determine total air infiltration. The blower door testing must show a tested
value of 3.0 ACH50 or lower in order to comply with the IECC.
Site Observations
Construction of the building envelope was complete. All exterior openings were shut and locked
and interior doors were open. The pressure probe was placed outside.
Blower Door Test
The unit was depressurized, utilizing blower door testing equipment to a pressure of -50 Pa. At
the test pressure, the CFM50 was recorded, in order to determine the ACH50.
The blower door air leakage resulted in the following measurements: 2.7ACH50
Please call with any questions or concerns.
Jason Weingast
HERS Rater& IECC/HERS Compliance Specialist
North 39 Energy
Expert Energy Consulting & Verification Services
Test Date:
Builder:
Contact:
Site Address:
Site Visit By:
September 11th, 2025
Monico Murillo
Monico Murillo
1127 Scutter Lane, Silt, CO
Jason Weingast