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In Lewisville, air duct cleaning costs generally range from $300 to $700 for a standard single-family home, often calculated based on the number of vents or total square footage. Some companies offer flat-rate pricing for the entire system, while others charge approximately $30 to $60 per vent register. Homeowners should look for transparent, upfront quotes that include both supply and return lines to avoid hidden fees.

Common signs that your ducts need attention include visible dust blowing from vents, a musty odor when the AC kicks on, or a rapid buildup of dust on furniture shortly after cleaning. You should also check your air filters; if they are becoming excessively dirty within just a few weeks, it likely indicates a high level of debris inside the ductwork. In the humid North Texas climate, any sign of mold growth around vent covers is a critical indicator for immediate service.