5050 Quorum Dr Suite 700, Dallas, TX 75254 
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Irving packs a lot of different housing into one city, from 1950s ranch houses to brand-new townhomes. When the AC stops keeping up, the cause depends a lot on which kind of house you’re in. Here’s how to narrow it down before you call, and what Irving’s rules mean if a repair turns into a replacement.
AC not cooling in Irving? Check these before you call
- Thermostat. Set to Cool and below the room temperature. Replace the batteries if the screen is blank.
- Air filter. A clogged filter cuts airflow and can freeze the indoor coil.
- Breakers. Check the panel and the disconnect by the outdoor unit. If a breaker trips again right after a reset, leave it off and call.
- Ice on the lines. Turn the system off and let it thaw. Running it frozen can damage the compressor.
- Condensate drain. A float switch can shut the AC off when the drain backs up. Water near the indoor unit is a clue.
- Power. Oncor delivers electricity in Irving. If the whole house is dark, report it to Oncor at 888-313-4747 or check its outage map before you call an HVAC company. Some systems wait before restarting after power returns, so give it a little time.
Still warm inside? Call 972-423-0012, any hour.
The AC repairs we see most
- Capacitor or contactor. The outdoor unit hums but the fan or compressor won’t start.
- Refrigerant leak. Adding refrigerant without finding the leak only buys time.
- Frozen evaporator coil. Usually low airflow or low refrigerant.
- Blower or fan motor. Weak airflow at the vents, or an outdoor fan that won’t spin.
- Clogged drain line. Water at the air handler or a tripped float switch.
- Duct problems. A disconnected or crushed attic duct can leave one room hot.
More causes: why your AC isn’t blowing cold air and signs your AC needs repairs.
Irving homes and what their age means for your system
Irving’s homes span seven decades, from postwar neighborhoods to new construction. The Census puts the median Irving home at 1986, so many houses have attic ductwork 35 years old or more under a much newer outdoor unit.
The Census counts about 102,512 homes in Irving. Here’s how they break down by decade built:
| Built | Share of homes | What we often find |
|---|---|---|
| 1950s–1960s | About 21% | 60 years or older. Many were built before central air was common, so the ducts and equipment location were added or reworked later. |
| 1970s | About 12% | About 50 years old. Original attic ductwork is common unless it has been replaced. |
| 1980s | About 23% | Irving’s biggest decade. Most have replaced the outdoor unit at least once; the indoor coil, furnace and ducts may be older. |
| 1990s–2000s | About 27% | Many systems from this period were installed with R-22 and have since been replaced or are due. |
| 2010 and later | About 14% | Newer homes and the many apartments and townhomes built in recent years, usually on R-410A equipment. |
The house’s age doesn’t tell you the system’s age. The data plate on the outdoor unit does, and it’s the first thing we read.
Irving’s HVAC rules put a lot of weight on the attic. The City requires that equipment be reachable for service without removing permanent construction, a catwalk with continuous solid flooring to an attic unit, and a switched light and a receptacle at or near the equipment. Older Irving attics often fall short on those, and we tell you up front if a replacement will need them.
Irving permits for HVAC work
- The City of Irving requires a permit for all HVAC installations, which must meet the International Residential Code, the International Mechanical Code and the City’s adopted ordinances.
- A licensed HVAC contractor must get the permit and do the work. A homeowner can install a system in a house they own, live in and have homesteaded, but if refrigerant is being recovered, a licensed contractor has to be on the job. On rental property, a licensed contractor must do all the work.
- Permits are handled through the City’s MGO online portal. When the work is done, the contractor requests a final inspection there.
- Condensate has to drain to an approved location. It can’t discharge into a street or alley.
- Irving’s advice to homeowners: don’t take out a permit for a contractor, and ask to see the permit before work starts. Inspections are at 825 W. Irving Blvd., 972-721-2371.
Dallas Heating and Air Conditioning is registered with the City of Irving as a mechanical contractor. For a replacement, we pull the permit and schedule the inspection.
In Irving’s older homes, low airflow is a frequent part of the story. Ducts that were added or rerouted years after the house was built can be undersized, kinked or disconnected in the attic. If some rooms are fine and others never cool, we check the ducts before we blame the equipment, because a new part won’t fix air that never reaches the room.
Refrigerant and efficiency rules that affect your decision
R-22. The EPA ended the manufacture of new R-22 equipment in 2010 and the production and import of R-22 itself on January 1, 2020. An R-22 system can keep running, but it can only be recharged with recovered or reclaimed R-22. A large leak on an R-22 unit is often the point where replacement makes more sense than repair.
SEER2. Since January 1, 2023, Department of Energy rules require new split-system central air conditioners installed in the Southeast region, which includes Texas, to meet at least 14.3 SEER2 under 45,000 Btu/h and 13.8 SEER2 at 45,000 Btu/h and up. New split heat pumps nationwide must meet 14.3 SEER2. See SEER vs. SEER2.
New refrigerants. Under the EPA’s AIM Act rules, new home air conditioners and heat pumps are moving to refrigerants with lower global warming potential, such as R-454B and R-32. Read what the R-410A phase-out means.
How a Irving repair visit works
- You call. We answer 24/7 and set a time that works for you.
- Diagnosis. A NATE-certified technician checks the thermostat, electrical, airflow, refrigerant and drain, and finds the cause.
- Written price. You get upfront written pricing before any work starts. If replacement makes more sense, we show you both options.
- Permit if needed. If the repair is one Irving requires a permit for, we pull it.
- Repair and test. We fix it, then check the temperature drop across the coil and the drain.
Call right away if
- A breaker that trips again right after you reset it
- A burning or electrical smell from the indoor or outdoor unit
- Water coming through a ceiling below an attic unit
- An AC that’s off in high heat with an infant, an older adult or someone with a medical condition in the house
Why homeowners call us
- NATE-certified technicians
- 24/7 service
- Upfront written pricing before any work starts
- Financing available
- Registered with the City of Irving as a mechanical contractor
- All major brands, including Carrier, Trane, Lennox, Rheem, American Standard, York, Daikin, Mitsubishi, Fujitsu, Amana, Bryant and Goodman
More for Irving: HVAC service in Irving, heating repair in Irving, AC installation in Irving. See also AC repair and HVAC maintenance and tune-ups.
Call 972-423-0012, open 24 hours.
