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AC repair in Round Rock

Oncor delivers the power in Round Rock and residents pick a retail provider, so efficiency programs here run through Oncor's listed service providers when they're open. For the repair itself, check the TDLR license, and for a full replacement expect the HVAC company to accept the job in the city's Permit Portal.
#1

⭐ 5.0 · 460 reviews

907 Fieldstone Pl, Round Rock, TX 78664

#2

⭐ 5.0 · 377 reviews

1502 Chisholm Trail Rd A, Round Rock, TX 78681

#3

⭐ 5.0 · 133 reviews

551 S I-35 Frontage Rd Ste 373, Round Rock, TX 78664

#4

⭐ 5.0 · 125 reviews

1310 Chisholm Valley Dr Suite 410, Round Rock, TX 78681

#5

⭐ 5.0 · 116 reviews

1311 Chisholm Trail Rd Ste 404a, Round Rock, TX 78681

#6

⭐ 4.9 · 2831 reviews

3121 Eagles Nest St #150, Round Rock, TX 78665

#7

⭐ 4.9 · 973 reviews

1102 S Industrial Blvd Ste C, Round Rock, TX 78681

#8

⭐ 4.9 · 271 reviews

600 S I-35 Frontage Rd, Round Rock, TX 78681

#10

⭐ 4.9 · 118 reviews

551 S I-35 Frontage Rd #300, Round Rock, TX 78664

How we picked: this list ranks hvac by a weighted score of their Google rating and review count, last collected June 30, 2026. Our terms of service explain how rankings and Featured spots work.

Round Rock AC and the Oncor grid

Oncor delivers electricity in Round Rock, and residents choose their retail provider through Power to Choose. Oncor runs its energy efficiency programs through independent service providers listed on its Take A Load Off Texas site when programs are open, and Oncor is not a party to your contract with that provider. Ask an HVAC company whether it is a listed provider, and read the program terms on that site, not the sales sheet.

ERCOT set an all-time peak demand record of 91,089 megawatts on July 22, 2026, topping the 85,508 MW record of August 10, 2023 (both unofficial until final settlement). Service the unit in spring, before peak afternoons arrive.

Checking an HVAC contractor in Round Rock

Anyone who installs, repairs or maintains air conditioning or heating in Texas must hold a TDLR license, and an HVAC company must employ a licensed contractor at each permanent location. The license is valid statewide. Search the name or number on TDLR's License Data Search, which lists Air Conditioning Contractors and A/C Technicians.

The license number shows the class and endorsement, for example TACL/A/000000/C. Class B is limited to cooling systems of 25 tons or less and heating of 1.5 million BTU per hour or less. Technicians who help with repairs must be registered with TDLR and work under the contractor's supervision.

Round Rock mechanical permits

Round Rock lists mechanical contractors among the trades on its contractor registration sheet, and its one-permit system makes each subcontractor accept its assignment in the Permit Portal before the permit issues. Texas cities may not charge TDLR-licensed HVAC contractors a registration fee (since September 1, 2021), but permit fees still apply. Ask whether a replacement quote includes the permit.

AC repair and replacement prices for Round Rock

HomeGuide's national figures: AC repair averages $150 to $650, technicians charge $75 to $150 an hour, and large out-of-warranty repairs run $650 to $2,500 or more. Replacing a standard-efficiency central unit costs $5,000 to $8,300. Treat them as a range to test Round Rock quotes against.

A new split-system air conditioner installed in Texas since January 1, 2023 must reach at least 14.3 SEER2 under 45,000 Btu/h, or 13.8 SEER2 at 45,000 Btu/h and up. New systems are limited to refrigerants with a global warming potential of 700 or less from January 1, 2025, though equipment whose parts were all made before that date has no installation deadline. Ask which refrigerant the quoted unit uses. More on pricing is in the Texas HVAC guide.

Texas rules bar HVAC licensees from misrepresenting the need for service. If a repair visit turns into a replacement pitch, get a second written quote; Round Rock electricians can confirm whether a new unit needs a circuit change. The Round Rock hub covers the permit portal, and Georgetown AC repair works under a city-owned utility.

Round Rock AC repair FAQs

Do Round Rock HVAC companies need a city license?+

No separate city license is needed: a TDLR air conditioning contractor license is valid statewide. Round Rock does keep a registration sheet for mechanical contractors, and permit fees still apply.

Does Oncor offer AC rebates in Round Rock?+

Oncor runs efficiency programs through independent service providers on its Take A Load Off Texas site when programs are open. Check that site for what is open now and which contractors take part.

Can I work on my own AC in Round Rock?+

Texas HVAC licensing law does not apply to a person doing air conditioning work in a building they solely own as their home. Check Round Rock's permit rules before you start.