Emergency air conditioner repair in Dallas usually means one of two things: the system quit on a blistering afternoon and the house is heating up fast, or it quit after hours and you are wondering whether it can wait until morning. This page helps you decide what is truly urgent, keep everyone safe in the meantime, and know what to ask about price before anyone comes out at night.
Dallas Air & Heating is a free phone line, not an HVAC company. An automated assistant answers (469) 649-7066 around the clock, takes your name, callback number, city or ZIP and what the system is doing, then transfers you to an independent, locally owned heating and air conditioning company serving your part of Dallas-Fort Worth. That company decides when it can come, diagnoses the problem, quotes the repair and is paid by you. The line does not control anyone's schedule and never promises an arrival time.
Is it an emergency? Sort it in a minute
Start on the left. Anything in the first column comes before any call about the equipment. The middle column is a real after-hours call. The right column can almost always wait for normal business hours.
Call 911 or the utility first
- Someone in a hot house is confused, faint, has slurred speech or has hot, dry skin
- Smoke, sparks or flames from any part of the system
- You smell gas anywhere in the house
- A carbon monoxide alarm is sounding
- Power lines down near the outdoor unit after a storm
Call the line now, any hour
- No cooling on a 100 degree day, especially with an older adult, a baby or someone ill at home
- No cooling during a Heat Advisory or Extreme Heat Warning
- Water pouring from an attic unit or through a ceiling
- A burning smell that stopped when you shut the system off
- An AC breaker that trips again after one reset
Usually fine until morning
- The system cools but falls a few degrees behind late in the afternoon
- One room is warmer than the others
- A new noise while the system still cools well
- A cool night, nobody vulnerable at home, and the house is holding
- Planning a tune-up or a replacement quote
The deciding question is usually who is in the house, not what the equipment is doing. A dead AC in an empty home on an 85 degree night can wait. The same failure with a newborn or a grandparent upstairs in August cannot.
Heat in Dallas is a health problem, not just a comfort problem
DFW is no stranger to dangerous heat. The worst summer on record, 1980, brought 69 days of 100 degrees or more at the airport and two straight days at 113, and more than 100 people in the area died from the heat. Hot summers still take lives. Dallas County Health and Human Services confirmed the county's first heat-related death of 2026 on August 21, during a week when DFW hit 106 degrees and the National Weather Service had an Extreme Heat Warning up for Dallas and Tarrant counties.
Those warnings are worth knowing. In March 2025 the National Weather Service renamed its Excessive Heat Warning the Extreme Heat Warning. The Fort Worth office issues a Heat Advisory when the heat index is expected to reach about 105 or the air temperature about 103, and the warning at higher levels, around a 110 heat index or a 105 air temperature. If your AC goes out while either is in effect, treat it as urgent.
Signs of heat illness
The CDC lists heat exhaustion signs as heavy sweating, headache, nausea, dizziness, weakness, thirst and irritability. Move the person somewhere cool, give them cool fluids and use cold, wet cloths on the head, face and neck.
Heat stroke is the emergency: confusion or slurred speech, passing out, seizures, a very high body temperature, and skin that may be hot and dry or still soaked in sweat. Call 911, move the person to a cooler place and cool them with water or wet cloths until help arrives.
Who is most at risk
Dallas County health officials name older adults, children and people with chronic health conditions as the most vulnerable, and Ready.gov adds people with certain illnesses. Anyone living alone deserves a check-in during a heat wave. Pets in a closed, hot house are at risk too.
What to do while you wait for the technician
These steps buy time and keep people safe. None of them touch the equipment beyond switching it off.
Protect the system
- If the outdoor unit hums without the fan turning, there is ice on the lines, or you smell burning, set the thermostat to Off
- Put a bucket and towels under any ceiling drip and move belongings away
- Do not keep resetting a breaker or a float switch that has tripped
- Leave panels closed and refrigerant, wiring and capacitors to the technician
Protect the people
- Close blinds and drapes, especially on sunny windows
- Drink water every hour, even if you are not thirsty, and skip alcohol
- Take cool showers or baths and wear light, loose clothing
- Gather in the coolest room, usually downstairs and away from the sun
- Move older adults, babies and anyone ill to air conditioning if the house keeps climbing
Where to cool off in Dallas
The City of Dallas encourages anyone who needs relief from the heat to use any city public facility, including recreation centers and libraries, during their regular hours. The Office of Emergency Management also lists the West Dallas Multipurpose Center and the MLK Community Center among its cooling locations. Hours vary by site, so check the Dallas Public Library or recreation center hours before you go. In recent summers DART has also opened its air-conditioned transit centers as cooling stations for riders. A relative's house, a shopping center or a movie theater works just as well for a few hours.
If you live elsewhere in the metroplex, your own city or county usually opens libraries and community centers the same way. Check its website or social media during a heat warning.
Two quick checks before an after-hours call
A night visit costs more, so rule out the simple causes first.
- Thermostat and one breaker reset. Confirm the thermostat is on Cool with a working display and a setting below the room temperature. If a breaker marked for the air handler or condenser has tripped, reset it once. If it trips again, leave it off and call.
- The drain safety switch. Many attic and closet units have a float switch that shuts the system down when the drain pan fills. If you can see water standing in the pan, the system has likely stopped itself on purpose. Turn it off, catch any drip and call. Do not empty and restart it over and over.
Still no cooling after those two checks? Call at any hour and say what you see and who is in the house. The company you are put through to uses that to judge how urgent the visit is.
Power outage or AC failure?
If the lights, outlets and refrigerator are dead too, the problem is power, not the air conditioner, and no HVAC company can help until it comes back. Oncor owns the poles and wires in most of Dallas and much of North Texas. You can report an outage by texting OUT to 66267, calling 888-313-4747, or using the MyOncor app, and sign up for outage text alerts before the next storm. Oncor delivers the power but does not sell it, so outages go to Oncor rather than the company on your bill, unless your city runs its own electric utility. If you are not sure, the outage number is printed on your bill.
When power comes back, give the system a few minutes before calling. If it still will not start, check the thermostat and the AC breakers once, then call the line.
When the grid is under strain
ERCOT, which runs most of the Texas power grid, declares Energy Emergency Alerts when operating reserves get tight. At level 1 it asks people to safely cut use, such as nudging the thermostat up a degree or two. Rotating outages only become possible at level 3. Never let a conservation request put a vulnerable person at risk: the request is to raise the setting a little, not to switch cooling off.
How after-hours pricing usually works
The line never charges you and does not set prices. Each HVAC company sets its own. These are the things that usually move an emergency bill, so you know what to ask before someone is sent.
- The time of the call.Many companies charge more for nights, weekends and holidays, either as a higher trip fee or a higher labor rate.
- The diagnostic or trip fee.Ask what it is at this hour and whether it is credited toward the repair if you go ahead.
- Demand.During a long heat wave, every company's phone is ringing. That affects when someone can come more than the price, but ask.
- The part that failed.A common part the technician carries is a short visit. A part that has to be ordered means a temporary fix tonight and a return visit.
- Access and refrigerant.An attic unit in summer takes longer than a closet unit, and a refrigerant leak has to be found and fixed before the system is recharged.
It is fair to ask for the price in writing, or shown on a phone or tablet, before the work starts.
What a good technician does on an urgent call
- Makes the situation safe first, checking for electrical hazards before working on anything else
- Finds the failed part with meters and gauges instead of swapping parts until something works
- Tells you the price before the repair and whether the trip fee is credited
- Offers a safe temporary fix if the right part is not on hand, and explains the permanent repair
- Does not push a full system replacement in the middle of the night. If replacement is genuinely on the table, that quote can wait for daylight
Before anyone starts work, ask for the company's TDLR license number and check it.
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.
Gas smell or a carbon monoxide alarm: get out first
These are rare with an air conditioner, but they matter if your home has a gas furnace sharing the same closet or attic. If you smell gas, Atmos Energy, whose Mid-Tex division serves the Dallas and Fort Worth area, says to leave the area right away and, from a safe distance, call 911 and its 24 hour emergency line at 866-322-8667. Do not flip switches or touch the thermostat on the way out. If a carbon monoxide alarm sounds, get everyone into fresh air and call 911. The CDC lists headache, dizziness, weakness, upset stomach, vomiting, chest pain and confusion as common symptoms. If you run a generator during an outage, the CDC says to keep it outside and more than 20 feet from windows, doors and vents, never in a garage.
Before the next emergency
Most emergency calls are a worn part that gave out under the first heavy load of the season. A spring tune-up catches weak capacitors and clogged drains while companies have room in their schedules. Decide now where an older parent or a new baby would go if the AC quit in August, and save (469) 649-7066 in your phone so nobody has to search for it at 2 a.m. For what the common failures mean and how a full diagnosis works, see AC repair in Dallas.
- 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.
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Emergency calls across Dallas-Fort Worth
Day or night, the line takes calls from Dallas and the surrounding cities below.