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.

CAZ Depressurization

A zone in the home that includes a combustion appliance (such as a water heater or furnace) is known as a combustion appliance zone, or CAZ. As the home becomes more air-sealed, backdrafting and spilling of carbon monoxide into the living space can become a real threat. The auditor needs to understand the variables and healthy thresholds of CAZ pressures and be able to identify potential risks to the home's occupants.

After completing this lesson, auditors will be able to:

  • Explain what CAZ depressurization is
  • Identify the risks to homeowner from CAZ depressurization
  • Run a "worst case scenario" CAZ depressurization test
  • Improve safety in and around CAZs

Watch our example videos for this lesson by clicking on the link(s) below:
CAZ Depressurization

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