NADCA-ASCS Exam Details

  • Exam Code
    :NADCA-ASCS
  • Exam Name
    :Air Systems Cleaning Specialist
  • Certification
    :NADCA Certifications
  • Vendor
    :NADCA
  • Total Questions
    :148 Q&As
  • Last Updated
    :Jul 09, 2026

NADCA NADCA-ASCS Online Questions & Answers

  • Question 21:

    HVAC system components subjected to flooding shall be evaluated and categorized according to which industry standard?

    A. Institute of Inspection Cleaning and Restoration Certification (IICRC) S520
    B. IICRC S500
    C. National Fire Protection Association (NFPA) 96
    D. NFPA 90A

  • Question 22:

    The evaporator coil provides:

    A. heat
    B. dehumidification
    C. humidification
    D. reheat

  • Question 23:

    Which of the following is MOST likely to contain bloodborne pathogens?

    A. Contaminated condensate drain line
    B. Sewer contaminated ductwork
    C. Dishwater contaminated ductwork
    D. Contaminated evaporator coil

  • Question 24:

    The NADCA Vacuum Test template is

    A. not necessary if the area being tested is well defined.
    B. made up of one 2x 25 cm slot
    C. used to prevent direct contact with the component surface.
    D. usually left in place for future testing of the same area

  • Question 25:

    According to The NADCA White Paper on Using Chemical Products in HVAC Systems, the application of antimicrobial chemicals within HVAC systems is regulated by the

    A. Environmental Protection Agency (EPA).
    B. Occupational Safety and Health Administration (OSHA).
    C. U.S. Department of Agriculture (USDA).
    D. U.S. Department of Transportation (DOT).

  • Question 26:

    An ASCS notices that the supply air plenum of a unit being cleaned has excessive mold growth. What is the common symptom an unprotected worker may experience?

    A. Blurred vision
    B. Anaphylactic shock
    C. Allergic rhinitis
    D. Chest pain

  • Question 27:

    It is recommended that post project reports contain

    A. daily reports
    B. photographic documentation
    C. equipment calibration
    D. HEPA certification

  • Question 28:

    In a building with an open return plenum, which room is considered part of the HVAC system?

    A. Control room
    B. Storage room
    C. Electrical room
    D. Mechanical room

  • Question 29:

    Prior to entering a facility, cleaning equipment MUST

    A. be documented and inventoried.
    B. have identifying markings,
    C. be clean and in good working order.
    D. be secured in a gang box.

  • Question 30:

    Which of the following represents the static pressure, for each area listed, that is MOST likely to be found in a typical HVAC system? Supply Return Outside Air Ductwork Ductwork Intake

    A. Negative Positive Negative
    B. Positive Positive Negative
    C. Positive Negative Positive
    D. Positive Negative Negative

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