Author Question: What are the two main types of duct cleaning equipment being used? A) Units that use high ... (Read 56 times)

azncindy619 · **on:** Jul 26, 2018

What are the two main types of duct cleaning equipment being used?

A) Units that use high velocity air and units that use sprayed cleaning compounds
B) Ultraviolet units and ultrasonic particle precipitators
C) Units that use brushes and vacuum and units that use ultrasonic particle precipitation
D) Large truck mounted units and small portable units

Question 2

A duct blaster is used

A) To install duct runs in approximately half the time of conventional methods
B) To install takeoffs onto plenums using high velocity and percussive force
C) To clean duct systems with high velocity air
D) To measure the amount of air leakage in a duct system