The duct cleaners with the huge truck-mounted vacuums do a good job of cleaning the dust from sheetmetal ductwork. They have a more difficult time cleaning the dust from fiberglass-lined ductwork, as the fiberglass rough surface catches dust and abrades with high air velocities. Cleaning the ductwork is a healthier way to live in your house. Examine highest quality filters for your furnace. The folded HEPA filters can protect against needing another duct cleaning for a decade.
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