In 2026, a full AC replacement in Austin commonly runs $6,500 to $14,500 for a standard split system, with high-efficiency variable-speed systems often reaching $15,500 to $21,000 and two-system homes roughly doubling the figure. Prices rose with the 2025 refrigerant transition and SEER2 minimums, and Austin labor sits above the state average. The local wrinkle is your utility: Austin Energy customers inside the city have one of the stronger rebate programs in Texas, while Round Rock, Cedar Park, and Georgetown homes are served by Oncor, PEC, or a city utility with different offers.
Typical Austin replacement price tiers
Standard efficiency, single-stage, 3 to 5 tons, matched outdoor unit and coil: commonly $6,500 to $11,000 installed.
Mid efficiency, two-stage, with a new furnace or air handler: typically $9,500 to $14,500. Better comfort through a 100°F streak and quieter operation.
High efficiency variable-speed (17 to 20+ SEER2) with a communicating thermostat: often $15,500 to $21,000 or more. Payback is reasonable given Central Texas run hours, especially with an Austin Energy rebate.
Add-ons: attic platform and drain pan work, duct sealing (often rebated), surge protection, hail guards, and permit fees.
What moved the price and what helps
Refrigerant and minimums. New systems ship with A2L refrigerants since 2025 and cost more; Texas's 14.3 SEER2 minimum removed the cheap tier.
Rebates by utility. Austin Energy commonly rebates qualifying high-efficiency systems, duct sealing, and smart thermostats through participating contractors. PEC and other co-ops have their own programs. The federal 25C credit ended for equipment placed in service after 2025. Ask each installer to itemize for your address.
Sizing. Insist on a Manual J load calculation. West Austin homes on limestone with big windows and east-side homes on clay with leaky ducts need different systems.
How to compare quotes
Compare the same equipment tier and the same scope: matched components, line set, pad, thermostat, permit, disposal, and commissioning with measured charge and airflow.
Ask which utility program the installer is enrolled in. An installer who isn't enrolled can't get you the rebate.
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