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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.

Calculating Air Flow

Calculating airflow using the blower door is an important part of the auditor's job because it will help you build a successful strategy for the weatherization process. Accurate calculations of airflow in the home will give you a quick understanding of what the home requires in order to be healthy, comfortable, and energy-efficient. Determining the air changes per hour (ACH) and understanding how making a home too "tight" can negatively affect indoor air quality are both important tasks for the auditor during the initial evaluation of the home.

After completing this lesson, auditors will be able to:

  • Determine air changes per hour (ACH)
  • Understand how weatherization can negatively affect indoor air quality
  • Establish solutions to keep a fresh air supply circulating in the home


Watch our example videos for this lesson by clicking on the link(s) below:
Calculating Air Flow

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