Generally, replacing an air conditioner can cost several thousand dollars to over $10,000. However, exact costs will vary depending on: - The size of your home - The type of AC system you want - The labor involved (For example, installing new ductwork) Additional factors that can affect AC costs include energy efficiency, capacity, and different features that contribute to air quality, user experience, and more. For an accurate estimate, schedule an in-home assessment from Apex Clean Air.