Residential HVAC Installation Practice Exam

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Prepare for the Residential HVAC Installation Exam with this comprehensive quiz. Test your knowledge with multiple-choice questions and get ready to excel in your HVAC installation career.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

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.