Air Systems Cleaning Specialist (ASCS) Certification Exam

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What is the minimum CFM (cubic feet per minute) capacity typically recommended for a negative air machine used in commercial duct cleaning?

At least 1,000 CFM to maintain adequate negative pressure in larger systems 100 CFM is sufficient for all systems CFM does not matter as long as HEPA is present 500 CFM maximum to avoid duct damage

Correct Answer:

At least 1,000 CFM to maintain adequate negative pressure in larger systems

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