Download Air Systems Cleaning Specialist.ASCS.ExamTopics.2025-11-06.49q.vcex

Vendor: NADCA
Exam Code: ASCS
Exam Name: Air Systems Cleaning Specialist
Date: Nov 06, 2025
File Size: 24 KB
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Demo Questions

Question 1
Unless otherwise specified, the goal of HVAC system cleaning is to restore the system to what minimum level of cleanliness?
  1. The system is visibly clean
  2. The system is tree of all adhered substances.
  3. The weight of contaminants is more than .7 mg per 100 sq. cm.
  4. The system passes the White Glove Test.
Correct answer: B
Explanation:
B: 1 - Mosted
B: 1 - Mosted
Question 2
According to ACR, The NADCA Standard, mold remediation should be conducted in accordance with which standard?
  1. IICRC S500
  2. IICRC S520
  3. ASHRAE S180
  4. NAIMA AH122
Correct answer: B -
Question 3
According to ACR, The NADCA Standard, what is the recommended inspection schedule for a residential supply duct?
  1. Every 6 months
  2. Every year
  3. Every 2 years
  4. Every 4 years
Correct answer: C
Explanation:
C: 3 - Mosted
C: 3 - Mosted
Question 4
Which color is the HEPA cartridge for a respirator?
  1. Blue
  2. Magenta
  3. Black
  4. Green
Correct answer: C
Explanation:
B: 2 - Mosted
B: 2 - Mosted
Question 5
A magenta, or purple, color code on a respirator cartridge indicates which of the following types of filters?
  1. Carbon
  2. Organic
  3. HEPA
  4. Ultra Low Penetration Air (ULPA)
Correct answer: A
Explanation:
C: 2 - Mosted
C: 2 - Mosted
Question 6
Which component can be found in a fan coil unit?
  1. Condensate pan
  2. Humidifier
  3. Turning vane
  4. Diffuser
Correct answer: D
Question 7
Service openings shall NOT be made in what type of duct?
  1. Duct board
  2. Fibrous glass
  3. Metal
  4. Flexible
Correct answer: D
Explanation:
D: 3 - Mosted
D: 3 - Mosted
Question 8
A balometer (flow hood) is MOST frequently used by which of the following trade persons?
  1. Architect
  2. Industrial hygienist
  3. Filtration specialist
  4. Test and balance specialist
Correct answer: D
Explanation:
D: 3 - Mosted
D: 3 - Mosted
Question 9
Which pneumatic tool is often used to move debris into collection equipment?
  1. Whip
  2. Nibbler
  3. Shear
  4. Grinder
Correct answer: C
Question 10
During cleaning, vacuum collection equipment shall be used
  1. continuously.
  2. on the return only.
  3. on the supply only.
  4. when the building is occupied.
Correct answer: C
Explanation:
A: 2 - Mosted
A: 2 - Mosted
Question 11
What is the equivalent MERV rating for HEPA filters?
  1. MERV 1–4
  2. MERV 5–8
  3. MERV 9–12
  4. MERV 17–20
Correct answer: C
Explanation:
D: 1
D: 1
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