HVAC Repair & Replacement Cost in Austin, TX

Austin AC, furnace and duct prices with Travis County labor

† Central AC replacement: High end reflects two-stage and variable-speed equipment, larger homes, and duct modifications; a standard-efficiency change-out on sound ductwork lands in the lower half.

† Furnace replacement: Electric furnaces sit at the low end; gas furnaces run $3,800 to $10,000 in most guides, and high-efficiency condensing units push past the high end.

† Heat pump installation (air-source): Sources disagree widely (>3x): contractor-network averages (Angi, Bob Vila, Today's Homeowner) cluster near $6,000 for a like-for-like change-out, while HomeGuide, This Old House, and Carrier quote $10,000 to $25,000 for higher-efficiency and cold-climate systems. Range widened to cover both.

† Ductwork replacement: Whole-home replacement in a 1,500 to 2,500 sq ft house; replacing a few runs costs a fraction, and retrofitting ducts into a home that never had them runs above the high end.

What a healthy system does at 100°F

On a day well past the 97°F July average high, a correctly sized air conditioner may run for hours without cycling off, and the indoor temperature may drift a degree or two above the setting by late afternoon. That is expected. Load calculations size equipment for a design temperature that a typical summer exceeds only for a small share of hours, so the hottest days ask for more than the unit was built to give.

The signs of a real fault are different: warm air from the supply vents, frost or ice on the copper line at the outdoor unit, an outdoor fan that hums without spinning, or a breaker that trips again after a reset. Those calls usually land in the $150–$650 repair row, often a capacitor, contactor, or fan motor that finally gave out under the heat.

A bigger unit is the wrong answer to hot afternoons

Austin sees 123 days a year at 90°F or above. On most of them, an oversized system reaches the setpoint quickly, shuts off, and starts again a few minutes later. Short cycles wear the compressor, waste the energy spent at startup, and leave moisture in the air, which matters in a humid climate zone like 2A. The extra capacity also lands the quote higher in the $4,100–$12,200 replacement row.

Ask every bidder for a Manual J load calculation using your home's actual insulation, windows, and orientation, not a tonnage copied from the old unit's label. If the honest answer is the same size you have now, fine. If a contractor wants to go a ton larger because "it gets hot here," ask to see the math.

Austin pays more for the same work

Construction workers in the Austin metro average $1,624 a week, 4% above the national figure, and the price rows here carry a 1.02 factor as a result. San Antonio sits at 0.97 and Waco at 0.93, even though San Antonio's cooling load of 3,148 degree days is nearly identical. The middle job on the table runs $3,100 in Austin and $2,900 in San Antonio. The equipment costs roughly the same everywhere; the difference is what an hour of installer time costs.

When the compressor dies in August

A failed compressor runs $1,000–$3,100 to replace, and it is the point where the repair-or-replace choice stops being theoretical. Three facts push the decision. A system more than about ten years old has other worn parts waiting. Older systems run on R-410A, a refrigerant under the federal HFC phasedown, so recharging after a future leak is likely to cost more. And since 2025, new split systems use R-454B or R-32, which means a replacement outdoor unit needs a matched indoor coil rather than a hookup to the old one.

On a young system still under the manufacturer's parts warranty, the compressor itself may be free and you pay the labor, which makes repair the clear choice. On an older one, compare the compressor quote against a full replacement near $6,100.

Storm damage is the narrow exception for insurance

Travis County logged hail an inch or larger on 26 days over 2016–2025, ranking 20th of 33. If hail punctures the condenser coil, lightning fries the control board, or a limb crushes the cabinet, homeowners insurance usually pays after the deductible. An AC that quits from heat, age, or a worn part is a breakdown, and standard policies exclude it.

Winter still gets a few hard mornings

Austin's January average low is 42°F, with 12 nights at or below freezing in a normal year. A heat pump, which installs for $4,300–$15,300, covers that easily and uses backup heat strips only on the coldest mornings. If you already have a gas furnace in good shape, a fall check from the $100–$350 tune-up row is enough; furnace repairs here typically run $300.

Austin heat and HVAC questions

Nearby & related