Air Systems Cleaning Specialist

Here you have the best NADCA ASCS practice exam questions

  • You have 148 total questions to study from
  • Each page has 5 questions, making a total of 30 pages
  • You can navigate through the pages using the buttons at the bottom
  • This questions were last updated on October 23, 2025
  • This site is not affiliated with or endorsed by NADCA.
Question 1 of 148
According to ACR, The NADCA Standard, properly performed HVAC system cleaning services should:
    Correct Answer: D

    According to the NADCA (National Air Duct Cleaners Association) Standard, properly performed HVAC system cleaning services should render the system visibly clean. This means that all the key components of the system should be free from visible dust and debris after cleaning. Ensuring visible cleanliness is a standardized measure of quality in HVAC cleaning services.

Question 2 of 148
Which of the following creates the greatest restriction of airflow?
    Correct Answer: C

Question 3 of 148
Having a regular HVAC filter replacement plan can help:
    Correct Answer: A

Question 4 of 148
According to ACR, The NADCA Standard, proper cleaning and maintenance of an HVAC system:
    Correct Answer: B

Question 5 of 148
During a commercial site survey, an ASCS should do which of the following to determine client expectations?
    Correct Answer: B