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Introduction to Building Analysis
Building Evaluations
Energy Modeling
Building Diagnostics

Initial Blower Door Analysis

Calculating Air Flow

Blower Door Test-Out

Measuring Zone Pressure Imbalance

Duct Leakage and Design Diagnostics

Duct-Induced Air Pressure

Thermographic Inspections

CAZ Depressurization

Base Load Metering
Inspecting Mobile Homes
Building Performance Institute Inc.

Duct-Induced Air Pressure

If a forced air duct system has not been properly designed, installed, and sealed it can create negative or positive pressures in various rooms or zones. The adverse effects of these duct-induced pressures include indoor air quality and health problems, comfort issues, and reduced building durability.

After completing this lesson, auditors will be able to:

  • Explain the concept of duct-induced air pressure, as well as the problems associated with air pressure imbalances within the home
  • Explain the causes of duct-induced air pressure imbalances, and how to identify them
  • Initiate the proper work plan to correct duct-induced air pressure imbalances


Watch our example videos for this lesson by clicking on the link(s) below:
Duct-Induced Air Pressure

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