Is using a brush inside the duct work needed?
Yes. Americlean’s patented electric rotary brushes are long and flexible enough to clean any duct configuration. Chimney sweep brushes cannot do the job. Vacuuming alone removes only 40% of the debris. No matter how powerful the machine is, only internal agitation will remove the remaining contaminants. An EPA study (EPA-600/R-97-137) said: “brushing is necessary to effectively clean the duct…