Blower Door Testing

The air leakage test (or “Blower Door Test”) uses a calibrated fan that mounts into the frame of an exterior door to either pressurize or depressurize a home to a standard test pressure of 50 Pascals (with respect to the outside) and measures the air leakage flow at that pressure, measured by digital pressure gauges. These tests determine the air infiltration rate of a home or building. A single-point or multi-point blower test can be performed to test the home, where a multi-point, using more than one blower, can offer more granular results on exact placement of air leakage.

An accredited technician then performs a visual inspection and diagnostic testing throughout the home, dwelling or commercial space to identify sources of leakage or issue in the HVAC system and the structure’s thermal envelope.

Here’s what our visual test checks for:

  1. Proper Duct Sealing
  2. Duct Leakage
  3. Proper Supply And Return Functionality
  4. Air Handler Fan Efficacy
  5. Verified Energy Efficiency Ratio (EER)
  6. Verified Seasonal Energy Efficiency Ratio (SEER)
  7. Building Envelope Air Leakage
  8. High-Quality Insulation Installation (QII)

The blower door and duct testing, combined with the visual inspection of our experienced HERS Raters, determines your home’s energy rating and pinpoints vulnerabilities that can be modified to increase overall energy consumption and the rating.