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1 A proper home air duct cleaning costs anywhere from $400-$1,000, depending on the size of the system to be cleaned, the type of services offered, the regional climate and the level of use the ventilation system gets, the type of materials inside the ductwork and the amount of contaminants (dust, mold, etc.).
1 AirDuctDenver.com is a company that provides air duct cleaning services in the state of Colorado. 2  This company offers a flat rate for servicing a whole house as their special offer. 3  The price of the usual service can range from $400 to $440, but they can lower it to $200 as part of their deal. For example, some may charge $15 to $30 per vent. 2  AirDuctDenver.com is a company that provides air duct cleaning services in the state of Colorado. 3  This company offers a flat rate for servicing a whole house as their special offer.