What are two potential hazards that could prevent the completion of a blower door test?

The presence of mold and asbestos is indeed a significant concern when conducting a blower door test. Mold can affect the health of occupants and worsen in the presence of humidity created during the testing process. Moreover, asbestos is a hazardous material that, when disturbed, can release fibers into the air, posing serious health risks.

Both of these hazards can lead to safety concerns for the technicians performing the test as well as for the occupants of the building. Therefore, the presence of mold and asbestos could halt the testing process to ensure safety protocols are followed. Recognizing these types of hazards allows professionals to address them properly before proceeding with the blower door test, ensuring a safe working environment.