10 free ASCS practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
ASCS Practice Test 5Tutor mode
Question 1 of 10
Benefits of HVAC System Cleaning
Before cleaning a heavily loaded cooling coil in a VAV air handler at a corporate office, the technician records the pressure drop across the coil. After cleaning, with the fan unchanged, what change should the readings show?