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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.).
Air Duct Cleaning Average Costs. 1  Air duct cleaning cost should fall somewhere between $400 and $1,200. 2  For a single-zone system (one with a single furnace), expect to pay $300 to $600. 3  For a two-zone system (one with two furnaces), costs might reach $600 to $1,200.