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Air Systems Cleaning Specialist

Exam Details

  • Exam Code
    :ASCS
  • Exam Name
    :Air Systems Cleaning Specialist
  • Certification
    :NADCA Certifications
  • Vendor
    :NADCA
  • Total Questions
    :148 Q&As
  • Last Updated
    :Dec 18, 2024

NADCA NADCA Certifications ASCS Questions & Answers

  • Question 1:

    According to ACR, The NADCA Standard, properly performed HVAC system cleaning services should:

    A. eliminate all contamination.

    B. restore the internal insulation to an “as new” condition.

    C. restore the evaporator coil to its original pressure drop.

    D. render the system visibly clean.

  • Question 2:

    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

  • Question 3:

    Having a regular HVAC filter replacement plan can help:

    A. protect the system components.

    B. double the system’ airflow.

    C. humidify the airflow.

    D. sanitize the system components.

  • Question 4:

    According to ACR, The NADCA Standard, proper cleaning and maintenance of an HVAC system:

    A. eliminates odors.

    B. adds to the life expectancy of a system.

    C. reduces noise pollution.

    D. adds to the value of the HVAC system.

  • Question 5:

    During a commercial site survey, an ASCS should do which of the following to determine client expectations?

    A. Interview the client's employees

    B. Ask the client a series of specific questions prior to inspection

    C. Perform the inspection without interaction with the client

    D. Consult an Indoor Environmental Professional (IEP) to determine IAQ

  • Question 6:

    Dirt streaks around supply diffusers that are NOT caused by a dirty ventilation system are MOST likely caused by:

    A. Slow discharge velocities.

    B. elevated relative humidity.

    C. dirty room air at the diffuser.

    D. thermal stratification around the diffuser.

  • Question 7:

    According to ACR, The NADCA Standard, which of the following is the PRIMARY purpose of a written work plan?

    A. Minimizes potential for legal action against the contractor

    B. Allows a clear understanding of what work will be performed

    C. Ensures compliance with current Occupational Safety and Health Administration (OSHA) regulations

    D. Documents the complete list of materials to be used on the job site

  • Question 8:

    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 9:

    The MOST common types of fuel consumed in modern residential HVAC systems are:

    A. natural gas, propane, and oil

    B. electric, propane, and oil

    C. natural gas, methane, and oil

    D. natural gas, propane, and ethanol

  • Question 10:

    What type of supply fan transfers large volumes of air with a minimal wheel diameter?

    A. Backward-inclined fan

    B. Forward-curved fan

    C. Axial fan

    D. Radial fan

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