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From a Certified Pro
Certified Energy Auditor
Residential Comfort & Energy Efficiency
Friday, January 01 2021
IECC Energy Code Testing - Blower Door Test
This beautiful new construction house that was completed in summer 2020 located in New Windsor, MD went through one of it's final steps to pass the energy code in the state of Maryland.
The blower door test, or air leakage test was performed in accordance with the International Energy Conservation Code (IECC) and Maryland Energy Code Compliance.
The air leakage code requires that a house test at equal to or less than three air changes per hour (3ACH).
The test was conducted using the ASTM E1827 - single point method.
The blower door test was conducted five times and each measurement was recorded and entered into the report.
Each test result yielded an ACH number less than two so the house passed with flying colors.
In Carroll County Maryland and many other counties across the country, it is important to consider the building envelope during each construction phase so that your house is sealed properly and it can also easily pass the test.
Tighter houses use less energy and are more comfortable. In a tighter house you control the home's "breathing" rather than letting your energy dollars escape through the various holes to the outside around a typical residential building's shell.
Watch an explanation of the blower door test during a guest appearance at the Montgomery County Energy Connection video shoot.