Keep the dirt in the super collector vacuum and not your vents.

Whilen duct cleaningn alone doesn’t seem thatn necessaryn , there are cases wheren cleaningn the HVAC unit and ductwork could be useful.  An cleaningn every 5-7 years by a company that doesn’t make then duct cleaning a waste of moneyn can provide relief from a whole host of problems. … Additionally, if there is suspected mold spores or growth in the ductwork, a thoroughn cleaningn will remove the mold and keep it from spreading into the rest of the home.n

DUST IN VACUUM–NOT IN SYSTEMn