The answer to 'how much is air duct service' is that the cost can vary significantly depending on several factors. In general, professional air duct cleaning services typically range from $300 to $700 for an average-sized home. The exact price will depend on the size of your home, the number of vents and ducts, the extent of the cleaning needed, and your location.
Factors that influence the cost of air duct cleaning include the accessibility of the ducts, the presence of mold or other contaminants, and whether any repairs or modifications are required. Additionally, the experience and expertise of the cleaning company can also affect the price. It's important to get quotes from multiple local providers to find the best value for your home.