Free Practice NADCA ASCS Exam Questions 2025

Stay ahead with 100% Free Air Systems Cleaning Specialist ASCS Dumps Practice Questions

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Total 150 Questions | Updated On: Apr 21, 2025

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Question 1

Significant contaminant build-up in ductwork is MOST likely found in areas affected by:

A : heat loss.

B : pressure drops.

C : temperature differences.

D : pressure increases.

Answer: B

Question 2

According to ACR, The NADCA Standard, all portions of each coil assembly should be cleaned. In order to determine which type of cleaning is required, the ASCS should:

A : access and inspect the upstream side of the coil.

B : access and inspect the plenum upstream and downstream of the coil.

C : access and inspect both upstream and downstream surfaces of the coil.

D : perform pitot tube testing upstream and downstream of the coil.

Answer: C

Question 3

During an HVAC system cleaning project, an ASCS encounters vents that have been painted over. What is the usual course of action?

A : Inform the over that the ductwork cannot be cleaned because removing the vent may damage the paint.

B : Proceed with the use of agitation tools without removing the vent.

C : Continue with the cleaning process, avoiding the use of agitation tools where vents have been painted over.

D : Inform the owner that a razor knife will be used to cut the paint before continuing with cleaning.

Answer: D

Question 4

When conducting an inspection, the ASCS should:

A : avoid cross-contamination and release of contaminants into occupied spaces.

B : avoid contamination of instruments and observation tools.

C : inform occupants immediately if mold is found.

D : perform the inspection during normal business hours.

Answer: C

Question 5

A client is noticing black particulate coming out of the diffusers and ending up on desks. During the initial inspection, the ASCS should pay close attention to the:

A : condition of the ceiling tiles.

B : condition of the internal duct insulation.

C : condition of the external insulation on the return.

D : closed cell foam insulation covering the AC line set.

Answer: B

Page: 1 / 30

Total 150 Questions | Updated On: Apr 21, 2025

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