SC HVAC Contractor Practice Questions - South Carolina HVAC Contractor License Exam

What is the proper method for calculating the CFM requirement for a room in a forced-air system?

Use 1 CFM per square foot for all rooms Divide the room's heating or cooling load (BTU/h) by the temperature difference × 1.08 Use the same CFM for every room Estimate based on the number of windows

Correct Answer:

Divide the room's heating or cooling load (BTU/h) by the temperature difference × 1.08

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