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AC Not Cooling
in Frisco, TX
When your AC blows air but the house won't cool down, something is blocking the system from doing its job. Frisco sees stretches of 100-plus-degree days every summer, and that kind of heat puts real strain on equipment. If you ignore it, the compressor can burn out, and that is a much bigger repair than what you started with.
Quick Answer
When an AC runs but stops cooling, it usually means low refrigerant, a dirty coil, or a failing compressor. In Frisco summers, where temperatures stay above 100 degrees for weeks, the system works harder and these problems show up faster. A technician needs to check refrigerant levels and inspect the coil before the problem gets worse. Call (254) 279-4716 to schedule an inspection before the next heat wave hits.
Telltale Signs
Warning Signs to Watch For
- The air coming from vents feels warm or just barely cool
- The AC runs for long cycles but the thermostat never reaches the set temperature
- Your electric bill spikes without any change in how you use the system
- Ice forms on the copper lines or on the outdoor unit
- The outdoor unit is running but making a straining or grinding sound
- Rooms farther from the air handler feel noticeably hotter than rooms nearby
Root Causes
What Causes AC Not Cooling?
Low Refrigerant Level
Refrigerant is the fluid that actually pulls heat out of your home. When there is a leak, the system loses its ability to absorb heat, and the air blowing through your vents stays warm. In Frisco, systems running 10 or more hours a day during summer put stress on copper lines and fittings, which is where leaks typically start.
The Fix
Refrigerant Leak Repair and Recharge
A technician finds the leak, seals it, and refills the refrigerant to the correct level. Just adding refrigerant without fixing the leak means you will be back in the same spot in a few months.
Dirty Evaporator Coil
The evaporator coil sits inside your air handler and absorbs heat from the air in your home. When it gets coated with dust and debris, it cannot absorb heat properly and cooling drops off. Frisco homes near Eldorado Parkway and the older subdivisions off Legacy Drive often have coils that have never been cleaned since the system was installed.
The Fix
Evaporator Coil Cleaning
A technician removes the access panel, applies a cleaning solution, and flushes the coil. A clean coil transfers heat the way it is supposed to, and the system does not have to work as hard.
Failing Compressor
The compressor is the pump that moves refrigerant through the whole system. When it starts to fail, it cannot build enough pressure to move heat outside. Systems that have been running low on refrigerant for a long time, which is common after several Frisco summers, often end up with compressor damage as a result.
The Fix
Compressor Replacement or System Replacement
A bad compressor can sometimes be replaced on its own, but on older units it often makes more sense to replace the whole outdoor unit. A technician can look at the age and condition of the system and give you a straight answer.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | Low Refrigerant Level | Dirty Evaporator Coil | Failing Compressor |
|---|---|---|---|
| Ice on the copper lines or outdoor unit | |||
| Warm air blowing from all vents | |||
| System runs constantly but never cools down | |||
| Hissing or bubbling sound near the outdoor unit | |||
| Loud clunking or grinding from the outdoor unit |
Free Inspection
Get a Diagnosis in Frisco
An on-site inspection is the only way to confirm which cause applies to your property. Free, no obligation.
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Serving Frisco & surrounding areas
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