Blower Door Testing

Discover Hidden Air Leaks in Your Home

Air leaks can make your home uncomfortable and drive up energy bills. A blower door test is a precise method to measure your home’s air tightness and pinpoint areas where heated or cooled air is escaping.

Measuring Airflow for Energy Efficiency

A blower door test uses a specialized fan mounted in an exterior doorway to create a controlled pressure difference between the inside and outside your home. This process reveals where air is leaking through cracks, gaps, and openings.

Step-by-Step Process

  • 1 Setup: A temporary frame with a calibrated fan is installed in an exterior doorway.
  • 2 Pressurization/Depressurization: The fan either pulls air out or pushes air in, creating a measurable difference in air pressure.
  • 3 Detection: Technicians use smoke pencils, thermal imaging, or infrared cameras to identify leaks around windows, doors, vents, and other penetrations.
Blower door fan for home energy testing.

How the Test Is Performed

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Person testing HVAC system with tablet.

Air Changes Per Hour (ACH)

The test results are measured in Air Changes per Hour (ACH), which indicates how many times the air inside your home is replaced with outside air in one hour.

  • Lower ACH: Indicates a tighter, more energy-efficient home.
  • Higher ACH: Reveals leaks and inefficiencies that may be causing high energy bills and discomfort.

Using Results to Improve Efficiency

Once air leaks are identified, we recommend upgrades such as:

  • Air Sealing of gaps and cracks
  • Insulation Enhancements for walls, attics, and crawl spaces
  • Duct Sealing to improve HVAC efficiency

Find Your Home's Air Leaks

Ensure your home is sealed, comfortable, and energy-efficient. Let our experts perform a blower door test and provide actionable solutions.

Schedule an Evaluation