How much does central air installation cost with existing ductwork?

Central air installation with existing ductwork is priced after an in-home assessment because equipment size, efficiency, and any code upgrades determine the total. The biggest cost driver is system tonnage and SEER2 rating, which affect both upfront price and energy use. A right-sized unit often costs less to run than an oversized system that short-cycles. Our team serves homes throughout the Dallas–Fort Worth area and provides free, no-obligation replacement estimates. Current offer: $500 OFF AC Installation on qualifying systems.

What affects your installed price:

• System features (single vs two-stage, variable-speed blower, thermostat)
• Electrical, pad, or refrigerant-line changes; permits and code items
• Duct condition near the air handler; minor repairs or sealing if needed
• Indoor air quality add-ons (HEPA, UV, dehumidifier) or smart thermostat

To get an exact number, schedule a load calculation and written estimate after a quick on-site visit.

Updated: 2026-08-05

Need help in Dallas, TX? Call (214) 945-0660 or book online.