Residential HVAC Installation Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

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 fitting called that is used to change the size of a square or rectangular duct?

A. Elbow
B. Reducer
C. Transition
D. Connector

The correct answer is: C. Transition

This is because a transition fitting is specifically designed to connect different sizes of square or rectangular ducts together. An elbow fitting is typically used to change the direction of the duct, while a reducer fitting is used to change the size of round ducts. A connector fitting is used to join two ducts together, but it does not change the size of the duct. Therefore, as none of the other options are designed to change the size of a square or rectangular duct, the correct answer is a transition fitting.