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!

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What type of fitting is used to connect a round duct to a rectangular duct in HVAC systems?

A. Round reducer
B. Rectangular elbow
C. Circular transition
D. Square to round transition

The correct answer is: D. Square to round transition

A round reducer would be used to connect two round ducts of different sizes. A rectangular elbow would be used to change the direction of a rectangular duct. A circular transition is another term for a round reducer and is not the correct option for connecting a round duct to a rectangular duct. A square to round transition is specifically designed to connect a square duct to a round duct, making it the most suitable option for connecting a round duct to a rectangular duct in HVAC systems.