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 11:

    During a water damage restoration, the Institute of Inspection Cleaning and Restoration Certification (IICRC) Standard S500 states HVAC systems should

    A. not be cleaned
    B. Be operated in “fan on” mode
    C. not be used for dehumidification
    D. be used for dehumidification

  • Question 12:

    A MAIN reason that hospital patients are at risk for infection from dirty HVAC systems is that:

    A. outside air intake is near loading dock.
    B. patients commonly have weakened immune systems.
    C. patients commonly have chemical sensitivity.
    D. hospital odors travel through the duct system.

  • Question 13:

    The cooling coil condenses moisture from the air stream providing:

    A. humidification,
    B. dehumidification
    C. stratification
    D. destratification

  • Question 14:

    A mechanical room is considered part of the HVAC system if the:

    A. mechanical room has two or more Air Handling Unit's (AHU).
    B. humidifiers are located inside the mechanical room.
    C. filters installed in the AHU are rated less than MERV 5.
    D. mechanical room is used as a mixing chamber.

  • Question 15:

    After restarting the HVAC system, the technician shall verify

    A. the system functions in heating/cooling mode.
    B. the floor coverings are removed.
    C. service openings are closed.
    D. payment is collected.

  • Question 16:

    If there is an insufficient drain, an HVAC system condensate drain line should be connected to a:

    A. condensate neutralizer.
    B. condensate reservoir.
    C. condensate collector.
    D. condensate pump.

  • Question 17:

    During routine inspections where no local problem is discovered, an inspector shall inspect at least:

    A. 5% of similar systems.
    B. 10% of similar systems.
    C. 15% of similar systems.
    D. 20% of similar systems.

  • Question 18:

    What resource is BEST to refer to when determining if all project work has been completed?

    A. ACR, The NADCA Standard
    B. Scope of work
    C. Hazard assessment
    D. Inspection report

  • Question 19:

    According to NAIMA AH 122, Cleaning Fibrous Glass Insulated Air Duct Systems, it is recommended that fibrous glass duct insulation that has become wet in service should be:

    A. dried and cleaned.
    B. cleaned and coated.
    C. removed and replaced.
    D. dried and sanitized.

  • Question 20:

    Which of the following materials used in zoning may result in the MOST cross-contamination from the previous day's work?

    A. Plastic
    B. Cardboard
    C. Metal
    D. Foam

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