This is a demonstration on how to use the Rotobrush Duct Cleaning Machine.
The Rotobrush aiR+® air duct cleaning system is powerful, portable, and able to be run by a single tech. It's a key element of our whole home air-quality and energy efficiency solutions.
@ 1:49 in part 4 he says to use a brush 2-4 inches larger than the horizontal hieght of the duct. Shouldn't that be vertical?
horizontal is width vertical is hieght
Uller39 1 year ago