AC repair in Denton, TX, has a few local twists that most of DFW does not. The city runs its own electric utility, that utility pays rebates on efficient equipment, and the housing ranges from century-old homes near the courthouse square to subdivisions finished last year. Here is what helps when your Denton system breaks down, and how the free line fits in.
Dallas Air & Heating does not repair anything. It is a free phone line. Call (469) 649-7066 and an automated assistant answers, day or night, and asks whether the problem is heating or cooling. You share your name, phone, ZIP and a quick description of the trouble, and you are connected to a Denton-area HVAC firm that is independent and locally owned. That company hears a short summary first, then diagnoses the problem, quotes its own price and bills you.
Denton: county seat, two universities, and steady growth
Denton is the seat of Denton County, and its courthouse on the downtown square was restored for the Texas Sesquicentennial in 1986. It is also a university city. The University of North Texas, which opened in 1890, enrolls more than 42,000 students, and Texas Woman's University, founded in 1901, has about 12,800 at its Denton campus. Together they explain why the Census Bureau finds only half of Denton homes are owner occupied.
Unlike the suburbs that boomed from almost nothing, Denton was already a city of 21,372 in 1950. It grew to 48,063 by 1980, 80,537 by 2000 and 139,869 by 2020, and covers about 96 square miles. That long history leaves a wider spread of house ages than in most DFW towns: older frame homes and bungalows in the neighborhoods near downtown and the campuses, ranch houses from the postwar decades, and new construction on the city's edges. An older home may have had central air added long after it was built, with ducts squeezed into whatever space the attic allowed.
Denton Municipal Electric: what it means for your AC
Many Denton homes get their electricity from Denton Municipal Electric, a utility owned by the city that has served Denton since 1905. It reports about 72,000 customers across a 108 square mile territory and says it supplies 100 percent renewable energy. Some addresses in and around Denton may be served by CoServ or by Oncor instead, so check your bill.
Power is out
DME customers report outages to the city's dispatch at (940) 349-7000. CoServ and Oncor customers use the numbers on their own bills. Set the thermostat to Off until power is steady.
Power is on, AC is not
The utility cannot help here. Look at the thermostat setting and its batteries, and give a tripped breaker one reset. Should it trip a second time, leave it and call for HVAC service.
Planning a replacement
DME customers may qualify for a GreenSense rebate on an efficient air conditioner or heat pump. Read the rules before the work starts, not after.
GreenSense rebates for DME customers
The City of Denton's GreenSense Energy Efficiency Rebate Program helps DME customers pay for efficiency upgrades. The rebate amounts posted on the city's site are:
| Equipment | Posted rebate |
|---|---|
| Air conditioner, 1 to 2.5 tons | $1,500 |
| Air conditioner, 3 to 5 tons | $2,000 |
| Heat pump, 1 to 2.5 tons | $2,000 |
| Heat pump, 3 to 5 tons | $2,500 |
| Mini split | 30 percent, up to $750 |
| Attic insulation | 50 percent, up to $1,500 |
The money is limited. The city reported that as of June 4, 2026, $331,232 remained of a $1,000,000 budget, so the program can run out. Applications must be filed within 90 days of installation or purchase, and work that needs a permit has to pass inspection through the city's Development Services. The rebate comes as a check or a credit on your DME bill. Ask the HVAC company whether the system it is quoting qualifies, and confirm on the city's rebate page that funds are still available before counting on it.
The city permit, and what it costs
Denton is plain about this one. The city's HVAC and furnace page says repair or replacement of HVAC or a furnace requires a permit. The fee is $50 per unit, and the job gets one mechanical final inspection. Applications can go in online or on a paper form at the Development Services Center, and the city asks applicants to say whether it is a like-for-like replacement in the same spot or a change in equipment, which speeds up review.
- Ask for the permit in writing. It is also part of qualifying for a GreenSense rebate.
- Ask about the ducts. In an older Denton house where central air was added later, the ducts may be undersized or poorly sealed.
- Ask about a heat pump. With electricity from DME and a larger rebate for heat pumps, it can be worth pricing one against a gas furnace and AC.
- Ask for the license number. Look it up with TDLR before you sign.
Cold snaps hit Denton hard
Heating matters here as much as cooling. During the February 2021 winter storm, Denton recorded an all-time low of minus 6 degrees on February 16, and its record high is 113 degrees, set in 1954. A system that has to handle both extremes benefits from a check before each season. Natural gas in Denton is delivered by Atmos Energy, so homes with a gas furnace or water heater should know the Atmos emergency number, 866-322-8667, and keep a working carbon monoxide alarm near the bedrooms.
Why Denton homeowners call the line
Rebate-minded replacements
DME customers planning a new system can ask the independent company they are put through to about GreenSense eligibility and the city permit, and get both written into the quote.
Older homes near downtown
Frame houses and bungalows near the square and the campuses often have retrofitted ducts. Describe the house when you call, and that detail goes into the summary the company hears first.
Landlords and student rentals
With half of Denton homes rented, many calls come from owners handling a tenant's breakdown. Calling the line is free, any hour, and the owner pays only the company that does the work.
Freeze and heat, one number
From a minus 6 degree morning to a triple-digit afternoon, the same free number answers. You check the TDLR license yourself, using the link on this page.
Services Denton homes need most
Hot months bring AC repair calls for warm air, short cycling and overflowing drain pans. Denton's cold snaps make furnace and heating repair just as important, whether the house has a gas furnace or a heat pump. If you are weighing a new system and a GreenSense rebate, start with AC installation and replacement. For a breakdown at night or over a holiday, emergency AC repair explains what to do while you wait.
AC Repair
Warm air from the vents, a unit that hums but will not start, ice on the lines or water in the ceiling. What a proper diagnosis covers in Dallas heat and what to ask before you approve a repair.
Emergency AC Repair (24/7)
No cooling at night, on a weekend or in a heat wave. What to do while you wait, who is most at risk, and how after-hours calls are usually priced.
AC Installation and Replacement
When replacing beats repairing, why a load calculation matters more than the brand, and what a complete installation quote should list.
Furnace and Heating Repair
No heat on a cold North Texas morning, a furnace that short cycles or a heat pump stuck in defrost. Gas safety first, then what a technician checks.
How a Denton call works
- Call any hourAn automated assistant answers (469) 649-7066 and asks whether it is about cooling or heating.
- Describe the problemGive your name, a callback number, your city or ZIP and what the system is doing.
- Get put throughThe call goes to an independent, locally owned heating and air conditioning company, which hears a short summary before it picks up.
- Deal with them directlyThat company diagnoses, quotes, does the work and is paid by you. If it cannot answer, it gets your details to call back.
How this line works: Dallas Air & Heating is a free phone line, not an HVAC company. It answers your call and connects you with an independent local heating and air conditioning company, which inspects, quotes and does the work, and which you pay directly. The line holds no HVAC license and does not repair, install or schedule anything itself. Those companies may pay Dallas Air & Heating a referral fee. You never pay the line. How it works.
Check the license yourself. In Texas, air conditioning and refrigeration contractors are licensed by the Texas Department of Licensing and Regulation (TDLR), and the license number belongs on the company's quotes and invoices. Ask for it and look it up with the TDLR license search (opens in a new tab) before work starts. It is also fair to ask for a certificate of insurance.
Areas near Denton
Other cities around DFW with pages here: