Air Systems Cleaning Specialist (ASCS) Certification Exam

Question 1

What is the primary function of a negative air machine used during duct cleaning?

To create negative pressure inside the duct system so contaminants are captured rather than released To pressurize the ducts for leak testing To measure airflow velocity To sanitize duct surfaces with UV light

Correct Answer:

To create negative pressure inside the duct system so contaminants are captured rather than released

Question 2

What type of filter should a negative air machine use to capture fine particulates during duct cleaning?

HEPA filter rated to capture 99.97% of particles at 0.3 microns Standard fiberglass panel filter Electrostatic filter Carbon activated filter only

Correct Answer:

HEPA filter rated to capture 99.97% of particles at 0.3 microns

Question 3

Which type of brush is most commonly used for mechanical agitation of debris inside rectangular sheet metal ducts?

Rotary or spinning brush attached to a flexible rod or drill Wire wheel brush Horsehair paintbrush Stiff-bristle hand scrub brush

Correct Answer:

Rotary or spinning brush attached to a flexible rod or drill

Question 4

What is the purpose of an air whip or skipper ball tool in duct cleaning?

To use compressed air to propel the tool through ducts and dislodge debris with air jets To seal access holes after cleaning To measure dust accumulation thickness To apply chemical coatings inside ducts

Correct Answer:

To use compressed air to propel the tool through ducts and dislodge debris with air jets

Question 5

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

Exam overview

About this Exam

Prepare with the Air Systems Cleaning Specialist (ASCS) Certification Exam practice quiz. This question bank includes 150 questions covering cleaning, duct, professional, hvac, and primary. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Air Systems Cleaning Specialist (ASCS) Certification Exam

This practice set contains 150 questions from the matching question bank and focuses on cleaning, duct, professional, hvac, and primary. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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About this Exam

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Air Systems Cleaning Specialist (ASCS) Certification Exam

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