AC repair in Lewisville

Oncor lists Lewisville among the cities it serves. In ERCOT areas without a co-op or a city-owned utility, residents choose their own retail electric provider and can compare plans at PowerToChoose.org. Your AC bill therefore depends on the plan you picked, not on a city rate.

Oncor runs its energy efficiency programs through independent service providers listed on its Take A Load Off Texas site when programs are open. Oncor is not a party to your contract with that provider, so get any promised incentive in writing from the company doing the work.

Summer load is the backdrop. ERCOT set an all-time peak demand record of 91,089 megawatts on July 22, 2026, above the 85,508 MW record of August 10, 2023 (records stay unofficial until final settlement). Denton County's emergency management office publishes extreme-heat guidance. Book maintenance before summer so you aren't comparing repair quotes in a heat wave.

These are national figures, so use them to sanity-check Lewisville quotes. HomeGuide puts typical AC repair at $150 to $650, with technicians billing $75 to $150 an hour and large out-of-warranty repairs at $650 to $2,500 or more. A standard-efficiency central AC replacement runs $5,000 to $8,300.

Efficiency rules for a new Lewisville system

Texas falls in the federal Southeast efficiency region. A split-system central air conditioner installed on or after January 1, 2023 must reach at least 14.3 SEER2 below 45,000 Btu/h, or 13.8 SEER2 at 45,000 Btu/h and up. Split-system heat pumps have a national floor of 14.3 SEER2 and 7.5 HSPF2.

Refrigerant matters too. Under EPA's Technology Transitions rules, new residential systems are limited to refrigerants with a global warming potential of 700 or less from January 1, 2025, though systems whose parts were all made or imported before that date have no installation deadline. Ask which refrigerant a quoted system uses.

The full Texas cost table and licensing guide live on our HVAC guide for Texas.

Anyone who installs, repairs or maintains heating or air conditioning in Texas must hold a TDLR license, and the company must employ a licensed contractor at each permanent location. Search the name or number on TDLR's License Data Search.

• Read the number. It shows the class and endorsement, for example TACL/A/000000/C. A Class B license is limited to cooling systems of 25 tons or less.
• Insurance. Class A contractors must carry at least $300,000 per occurrence, $600,000 aggregate and $300,000 products/completed operations; Class B at least $100,000, $200,000 and $100,000.
• Who shows up. A registered technician works under the contractor and may not advertise HVAC services alone.

Texas rules also bar licensees from misrepresenting the need for service, and require them to give cities a list of agents authorized to pull permits under their license. Since September 1, 2021, cities may not charge TDLR-licensed HVAC contractors registration fees, though permit fees still apply. Ask the contractor, or the City of Lewisville, whether a replacement needs a city permit, who will pull it, and for the permit number.

1. Write down what the system is doing: no cooling, short cycling, ice on the line, water at the air handler.
2. Ask for the diagnostic fee up front and whether it is credited if you approve the repair.
3. Ask for the TDLR license number on the estimate and check it before you sign.
4. For a replacement, get the SEER2 rating, the refrigerant and the permit plan in writing.

If the outdoor unit tripped a breaker or the disconnect looks scorched, that part is electrical work: see electricians in Lewisville. A water heater sharing the closet is a plumbing job for Lewisville plumbers. To compare a second quote next door, try AC repair in Flower Mound, and the Lewisville services overview covers the city's other local checks.