What is the main goal of CAZ testing?

The main goal of CAZ (Combustion Appliance Zone) testing is to verify proper venting under worst-case conditions. This process is crucial for ensuring that combustion appliances, such as furnaces or water heaters, are safely venting exhaust gases to the outside atmosphere, especially when other appliances are operating simultaneously and may affect airflow.

When performing CAZ testing, critical measures are taken to evaluate how air flows within the zone and to identify any potential backdrafting or pressure issues that could lead to dangerous conditions, such as carbon monoxide being drawn back into the living space. This focus on verifying safe venting practices ensures that the appliances operate correctly and do not pose health hazards to occupants.

The other options, while important in their contexts, do not capture the essence of CAZ testing. Efficiency assessments focus on how well an appliance converts fuel into heat; energy compliance relates to meeting energy conservation standards; and ambient air quality measurement concerns the overall cleanliness of indoor air, which is not the primary focus of CAZ testing.