5050 Quorum Dr Suite 700, Dallas, TX 75254 
Open 24 Hours 
Most Frisco homes are less than 25 years old, so an AC problem here is rarely a 50-year-old house problem. More often it’s a builder-installed system reaching middle age, an attic unit with a clogged drain, or one floor of a two-story home that can’t keep up. Here’s how to narrow it down.
AC not cooling in Frisco? Check these before you call
- 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. Depending on your address, Frisco gets its electricity from Oncor or CoServ; your bill tells you which. If the whole house is dark, report it to Oncor at 888-313-4747 or CoServ at 800-274-4014 before you call an HVAC company. Some systems wait before restarting after power returns, so give it a little time.
- Thermostat. Set to Cool and below the room temperature. Replace the batteries if the screen is blank.
Still warm inside? Call 972-423-0012, any hour.
The AC repairs we see most
- 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.
- Capacitor or contactor. The outdoor unit hums but the fan or compressor won’t start.
More causes: why your AC isn’t blowing cold air and signs your AC needs repairs.
Frisco homes and what their age means for your system
Frisco is young. The Census puts the median Frisco home at 2009, and three of every four were built in the 2000s or 2010s. That means a lot of Frisco homes are reaching the age where the original builder-installed system needs its first major repair or replacement.
The Census counts about 80,353 homes in Frisco. Here’s how they break down by decade built:
| Built | Share of homes | What we often find |
|---|---|---|
| Before 1990 | About 5% | The original town and older rural homes. Systems and ducts here vary the most. |
| 1990s | About 14% | About 30 years old. Most are on their second system, and some second systems ran on R-22. |
| 2000s | About 35% | Frisco’s first big wave. Builder-installed systems from this era are 15 to 25 years old, and many still use R-22 or early R-410A. |
| 2010s | About 40% | Frisco’s biggest decade. Most of these homes still have their original R-410A equipment. |
| 2020 and later | About 7% | New construction, often with equipment on the newer refrigerants. |
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.
Many Frisco homes are two stories, with an air handler or furnace in the attic. An attic unit needs a working condensate drain; when that drain clogs, water can end up in the ceiling below. If you see a stain on an upstairs ceiling or water dripping from a vent, turn the system off and call.
Frisco permits for HVAC work
- The contractor enters its City registration number on the application. After the permit is paid, the City issues a placard to display at the job.
- Inspections are requested through eTRAKiT. Frisco lists HVAC change-outs as eligible for its Remote Video Inspection program, where an inspector reviews the work by video call, if the Building Official approves it.
- Frisco suggests talking to a Building Inspections representative if you’re unsure whether a project needs a permit.
- The City of Frisco treats replacing heating and cooling systems as a Residential Self-Service permit. It’s applied for online through the Frisco Plans and Permits portal and doesn’t need plan review by City staff.
Dallas Heating and Air Conditioning is registered with the City of Frisco as a mechanical contractor. For a replacement, we pull the permit and schedule the inspection.
Frisco homes from the 2010s mostly run on R-410A. Parts and refrigerant for those systems are still available, so repair is usually a real option. The question is the system’s age and history. On a 15-year-old unit with a leaking coil, we’ll show you the repair and the replacement side by side.
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 Frisco 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 Frisco 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 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
- A breaker that trips again right after you reset it
Why homeowners call us
- 24/7 service
- Upfront written pricing before any work starts
- Financing available
- Registered with the City of Frisco as a mechanical contractor
- All major brands, including Carrier, Trane, Lennox, Rheem, American Standard, York, Daikin, Mitsubishi, Fujitsu, Amana, Bryant and Goodman
- NATE-certified technicians
More for Frisco: HVAC service in Frisco, heating repair in Frisco, AC installation in Frisco. See also AC repair and HVAC maintenance and tune-ups.
Call 972-423-0012, open 24 hours.
