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 51:

    When working in a hospital, who is responsible for determining cleanup of the work area?

    A. Contractor and patient advocate
    B. Contractor and local building official
    C. Client and local building official
    D. Client and contractor

  • Question 52:

    Which color is the HEPA cartridge for a respirator?

    A. Blue
    B. Magenta
    C. Black
    D. Green

  • Question 53:

    What kind of ventilation is PRIMARILY used in a painting chamber?

    A. Dual duct
    B. Multi zone
    C. Constant volume
    D. Exhaust system

  • Question 54:

    A common contaminant in HVAC units is:

    A. skin flakes.
    B. pieces of filter media.
    C. arsenic derivatives.
    D. calcium carbonate.

  • Question 55:

    What is the equivalent MERV rating for HEPA filters?

    A. MERV 1–4
    B. MERV 5–8
    C. MERV 9–12
    D. MERV 17–20

  • Question 56:

    When dealing with microbials, what is MOST important?

    A. Always start on time
    B. Do no harm to occupants and workers
    C. Begin remediation immediately
    D. Test for microbiologicals before remediation

  • Question 57:

    An ASCS is inspecting the HEPA filter in a vacuum collection device and notices the aluminum fins are bent. Which of the following should the ASCS inspect next?

    A. The color of the fitter
    B. The odors emanating from the filter
    C. The HEPA filtration media
    D. The gaskets of the vacuum collection device

  • Question 58:

    Which of the following HVAC components controls the room air by regulating hot and cold air?

    A. VAV box
    B. Mixing box
    C. Attenuator
    D. Constant volume damper

  • Question 59:

    According to ACR, The NADCA Standard, what is the recommended inspection schedule for a residential supply duct?

    A. Every 6 months
    B. Every year
    C. Every 2 years
    D. Every 4 years

  • Question 60:

    Which of the following is a PRIMARY reason the condensate drain line is flushed and cleaned during Type 2 Coil Cleaning?

    A. Cleaning the drain line lowers static pressure.
    B. A clogged drain line can result in standing water in the Air Handling Unit (AHU).
    C. A clogged drain line would require antimicrobials to be applied to the HVAC ductwork.
    D. Cleaning the drain line increases static pressure.

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