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 141:

    What is the MOST effective way for an ASCS to test the function of a condensate pump?

    A. Unplug and plug in the pump
    B. Fill the condensate pan with clean water
    C. Disconnect the condensate drain line
    D. Fill the pump with clean water

  • Question 142:

    When working inside a permit-required confined space, the priority should be to

    A. not block or reduce airflow
    B. provide moisture and mold controls
    C. ensure acceptable entry/exit conditions
    D. provide adequate lighting

  • Question 143:

    An inspection report should be discussed with:

    A. all building occupants.
    B. the designated point of contact.
    C. key building personnel.
    D. occupants affected by the work.

  • Question 144:

    According to ACR, The NADCA Standard, if when conducting a pre-cleaning inspection the Air Handling Unit (AHU) reveals suspect microbial growth, the ASCS shall:

    A. immediately put on a respirator and inform the occupants.
    B. stop the inspection and recommend a complete system cleaning.
    C. inspect the supply and return ducts as part of the inspection.
    D. close up the system to prevent any cross-contamination.

  • Question 145:

    A package unit contains which of the following components?

    A. Compressor, evaporator coil, condenser, supply fan, and filter
    B. Evaporator coil, VAV box, condenser, supply fan, exhaust fan, and filter
    C. Compressor, hat water coil, condenser, supply fan, exhaust fan, and filter
    D. Compressor, evaporator coil, condenser, supply fan, thermostat, and filter

  • Question 146:

    After completion of an air duct cleaning and visual inspection, the client states, "I expected the ducts to be cleaner.” What is the next step an ASCS should recommend?

    A. Re-cleaning of the entire system
    B. A Surface Comparison Test
    C. Re-cleaning of the affected area
    D. A NADCA Vacuum Test

  • Question 147:

    An ASCS is planning to clean the ductwork in a commercial building. Which procedure is used to prevent the release of dirt into the occupied space during the cleaning?

    A. Coverall office furnishings
    B. Use the contact method of cleaning
    C. Place the system under negative air pressure
    D. Place the occupied space under negative air pressure

  • Question 148:

    Turning vanes are PRIMARILY designed to:

    A. direct airflow.
    B. reduce pressure.
    C. control temperature.
    D. reduce sound.

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