Residential HVAC Installation Practice Exam

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Prepare for your Residential HVAC Installation Exam with engaging quizzes and multiple-choice questions. Each question includes hints and insightful explanations to ensure you're ready for the test!

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What is the term for the known resistance to airflow offered by each foot of duct?

Canvas collars
Drive clip
Friction loss
Trunk duct

The correct answer is: Friction loss

Friction loss refers to the resistance to airflow that ductwork creates as air moves through it. This resistance is typically measured in inches of water column (in. w.c.) and is crucial to consider when designing an HVAC system to ensure proper airflow distribution throughout the building. The other options, canvas collars, drive clips, and trunk duct, do not accurately represent the term for the known resistance to airflow offered by each foot of duct.