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 131:

    What is the PRIMARY source for the layout of a building's HVAC systems?

    A. Structural plans
    B. Mechanical plans
    C. Electrical plans
    D. Site plans

  • Question 132:

    According to ACR, The NADCA Standard, Cleaning of coils with steam is described as:

    A. Type 1.
    B. Method 1.
    C. Type 2.
    D. Method 2.

  • Question 133:

    Which of the following is the proper disposal procedure for visually contaminated HVAC filters?

    A. Place in double plastic bags, seal with duct tape, and leave it in the mechanical room
    B. Place in a cardboard box and leave it in the mechanical room
    C. Place in double plastic bags and seal with duct tape prior to transporting through the occupied space
    D. Place in a sealed cardboard box prior to transporting through the occupied space

  • Question 134:

    An inappropriate method for cleaning an electric reheat coil within a metal duct is:

    A. applying low pressure air.
    B. contact vacuuming.
    C. applying high pressure air.
    D. applying high pressure water.

  • Question 135:

    According to ACR, The NADCA Standard, prior to Type 2 Coil Cleaning, the condensate pan and drain should be:

    A. plugged to prevent leakage.
    B. verified for proper drainage.
    C. HEPA vacuumed.
    D. compressed air washed.

  • Question 136:

    The vacuum collection device used to convey air with debris shall maintain a sufficient velocity and negative pressure:

    A. downstream of the evaporator coil.
    B. in the mechanical room where the ductwork is located.
    C. in the portion of the ductwork being cleaned.
    D. upstream of the evaporator coil.

  • Question 137:

    Of the following environments, where would HEPA filters typically be installed?

    A. Cleanrooms
    B. Paint shops
    C. Automotive shops
    D. Shopping centers

  • Question 138:

    According to ACR, The NADCA Standard, it is recommended that the work plan include the name and contact information for:

    A. the manufacturer of all equipment to be used on the project.
    B. contractors and representatives involved in the project.
    C. all employees working on the project.
    D. past projects conducted by the company.

  • Question 139:

    What is a common method of recording conditions inside the ductwork?

    A. A voice recording
    B. Written documentation
    C. Photographs
    D. Telling a coworker

  • Question 140:

    Which of the following creates the greatest restriction of airflow?

    A. A dirty fan motor
    B. A dirty plenum
    C. A dirty coil
    D. A dirty return duct

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