EXAM SCRIPT 2026 COMPREHENSIVE STUDY
GUIDE WITH SOLVED Q&A
◉ All of the following are problems you'll commonly find on house
air fan blowers EXCEPT Answer: Installed backwards
Common Problems:
Dirty
Poorly Secured
Noisy or Vibrating
◉ Air leakage from ducts is a common and important problem. T or
F Answer: True
◉ The most common exhaust pipe material used for high efficiency
furnaces is: Answer: PVC
◉ The primary function of insulation is to control heat loss. T or F
Answer: True
, ◉ List 4 common forms that insulation materials may be found in:
Answer: Loose fill
Batts or blankets
Rigid Boards
Foamed in place
◉ What is minimum clearance from insulation for recessed
electrical fixture not rated for contact with insulation? Answer: 3
inches
◉ The function of a vapor barrier is to protect the building from
moisture damage. As well as designed to protect it from moisture
due to vapor diffusion, not air movement. Answer: False
◉ It is more important for the air barrier or vapor barrier to be
continuous? Answer: Air Barrier
◉ Should the vapor barrier be on the warm side or cold side of the
wall assembly Answer: Warm Side
◉ A vapor retarder is designed to, restrict vapor diffusion. T or F
Answer: True