Hiring a company that provides air duct cleaning services is just like hiring any other contractor, as long as they are a reputable company they should provide you with quality service. So if you notice a lot of dust around your air conditioning vents don't ignore the problem or put it off until it gets to be out of hand. Hire a company that provides air duct cleaning services to help protect the health of your family and the performance of your air conditioner. The final Air Duct Cleaning Service Cost is best determined after a professional inspection.