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Air Systems Cleaning Specialist

Exam Details

  • Exam Code
    :ASCS
  • Exam Name
    :Air Systems Cleaning Specialist
  • Certification
    :NADCA Certifications
  • Vendor
    :NADCA
  • Total Questions
    :148 Q&As
  • Last Updated
    :Jul 02, 2025

NADCA NADCA Certifications ASCS Questions & Answers

  • Question 81:

    To function properly, pneumatic duct cleaning tools require large amounts of:

    A. oil pressure

    B. lubricant

    C. air volume

    D. air surface

  • Question 82:

    Which pneumatic tool is often used to move debris into collection equipment?

    A. Whip

    B. Nibbler

    C. Shear

    D. Grinder

  • Question 83:

    What would be the minimum acceptable respirator type that workers should use while cleaning a duct system?

    A. P100

    B. Full face

    C. Half mask

    D. N95

  • Question 84:

    Vacuum collection equipment MUST be used to establish pressure differentials inside the portion of the HVAC system being serviced relative to:

    A. the static pressure.

    B. the surrounding area.

    C. the size of the ductwork.

    D. the outdoor pressure.

  • Question 85:

    Before applying a coating to fibrous glass components, the ASCS should FIRST: A. prepare the sprayer to apply the coating.

    B. steam clean and dry the area to be coated.

    C. sanitize the area to be coated.

    D. determine if the surface is suitable for coating.

  • Question 86:

    In which of the following scenarios might it be appropriate to apply an antimicrobial product?

    A. When treating wet contaminated fiberglass insulation within a duct

    B. To treat suspect microbial contaminants within a damp section of duct board

    C. Before cleaning an HVAC system contaminated with microbes

    D. After suspected mold growth has been removed from the blower housing

  • Question 87:

    What is the specific EPA registration required to apply antimicrobials in a ventilation system?

    A. Registered for sanitizing

    B. Registered for hard surface applications

    C. Registered for disinfectant

    D. Registered for use in HVAC systems

  • Question 88:

    Which of the following is NOT an element of a Safety Data Sheet/Material Safety Data Sheet (SDS/MSDS)?

    A. Exposure limits

    B. Emergency and first aid procedures

    C. Lockout/Tagout devices

    D. Precautionary measures

  • Question 89:

    An ASCS encounters friable internal fibrous glass duct liner; replacement is not an option. The BEST recommendation to the client is to:

    A. add external fibrous glass insulation to the duct exterior.

    B. apply an antimicrobial to the duct interior.

    C. apply a surface repair coating to the duct interior.

    D. add an internal layer of fibrous glass duct liner.

  • Question 90:

    Which of the following is NOT considered a mechanical means of agitating the inside of ductwork?

    A. Contact vacuuming

    B. Air whipping

    C. Vacuum collector

    D. Cable drive brush

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