Residential HVAC Installation Practice Exam

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Prepare for your Residential HVAC Installation test with our engaging quizzes and in-depth multiple-choice questions. Each question comes with hints and detailed explanations to ensure mastery of the subject matter. Get ready for your exam and boost your confidence!

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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.