On the other hand there are many more air duct cleaning companies that will properly clean the air system and air ducts and use commercial negative air duct cleaning vacuums with at least 2,000 CFMs of vacuum power and utilize proper agitating tools to move the contaminates within the duct work to be captured with HEPA filters and contained by the air duct cleaning vacuum equipment.
Make certain that the business has the correct devices and sufficient HEPA filtered vacuum power (2,000 CFMs or more), to appropriately clean your duct. Be tired of business that utilizes little vacuum systems that have a little turning brush on completion of a little vacuum hose with a normal air flow of 150 to 300 cfm or less. Appropriate duct cleaning vacuums are damaging air devices with 2,000 CFMs have 8 inches to 14 inches or bigger, vacuum hoses to record big amounts of dust and particles.
These are companies who are more interested in getting your money, through misleading advertisements or “bait and switch” mailers than actually doing the work properly and improving your indoor air. The very worse thing you can do is to hire a company that may actually create more of an indoor air problem for you and your family due to improper cleaning or use of inferior air duct cleaning vacuums with no more vacuum power than a large Wet/Dry vacuum with a rotating brush attached at the end of the hose, or use a “carpet cleaner” who is not properly licensed or certified to clean air systems. Be especially suspicious of companies advertising low one price duct cleaning service, it’s like providing a one price to paint the exterior of your home whether it be 1 story or several stories high.
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