How much does central air installation cost with existing ductwork?

Central air installation with existing ductwork is priced after an in-home evaluation, because your home’s cooling load and site conditions drive the total. The most common cost driver is right-sizing the system so it cools evenly without wasting energy. Our team installs systems across the Denver area and will verify that your current ducts and controls support reliable airflow. We offer a free A/C install estimate. If your ducts are a bit leaky, sealing them can prevent oversizing and keep install costs focused on the equipment, not workaround fixes.

What usually affects the price:

• System capacity and efficiency rating
• Duct repairs, sealing, or minor modifications
• Electrical or refrigerant line updates and code needs
• Installation access and outdoor unit location

Schedule an in-home assessment to receive an exact, written quote before any work begins.

Updated: 2026-07-18

Need help in Kittredge, CO? Call 720-613-8880 or book online. “Anthony was AWESOME! … he educated and installed a new AC outside unit the same day.” — Ian J.