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ASCS Air Systems Cleaning Specialist VIP Certification Exam
ASCS — The ASCS (Air Systems Cleaning Specialist) certification is issued by the National Air Duct Cleaners Association (NADCA); the real exam consists of approximately 100 multiple-choice questions covering HVAC system cleaning, NADCA ACR standards, IAQ, safety, and inspection/verification procedures, with a passing score of 70%.
31
Questions
120m
Time Limit
70.00%
To Pass
Question 1 of 31👑 VIP
A technician arrives at a commercial building where the building owner reports occupant complaints of musty odors and increased allergy symptoms. During initial inspection, the technician discovers visible dark staining on supply diffusers and inside the first 12 inches of several supply ducts. According to NADCA's ACR Standard, what is the MOST appropriate first step before any cleaning begins?
Questions 2–31 and full explanations are VIP-exclusive.