AC Not Blowing Cold Air?
If your air conditioner is running but the vents are pushing warm air, the system has stopped moving heat out of your house. Below is exactly what causes it, what you can safely check yourself, and what we do when you call.
Up-front, flat-rate pricing quoted before any work begins.
Check These 4 Things First
- Thermostat: set to COOL, fan on AUTO (not ON), and at least three degrees below the current room temperature.
- Air filter: if it's gray and matted, replace it. A blocked filter is the single most common cause of warm air.
- Breakers: check the panel for both the indoor air handler and the outdoor unit. If a breaker trips again after resetting once, stop and call us.
- Ice on the unit: if you see frost on the refrigerant line or coil, shut cooling off and run the fan only until it thaws.
Still warm after all four? It's a component failure — that's our job.
8 Reasons an AC Runs But Won't Cool
These are the causes we actually diagnose on no-cool calls across East Texas, roughly in the order we find them. Most are same-day repairs.
Clogged air filter
A filter packed with dust starves the evaporator coil of airflow. The coil gets too cold, ices over, and the air coming out of your vents turns warm.
Fix: filter replacement, coil thaw and airflow check — usually the cheapest cause on this list.
Failed run capacitor
The capacitor gives the compressor and fan motor the jolt they need to start. When it fails, the outdoor fan may spin while the compressor never engages, so the system moves air but never cools it.
Fix: capacitor replacement, typically same-day on the first visit.
Low refrigerant from a leak
Refrigerant carries heat out of your house. A leak in the coil, line set or fittings drops the charge, and cooling capacity falls off fast — often worst in the afternoon heat.
Fix: leak detection, repair, then a measured recharge to factory spec.
Frozen evaporator coil
Restricted airflow or low charge causes ice to form on the indoor coil. Ice blocks airflow entirely, so the blower pushes warm, humid air through the house.
Fix: controlled thaw, then correcting the underlying airflow or refrigerant cause.
Burned contactor or bad relay
The contactor is the electrical switch that starts the outdoor unit. Pitted or welded contacts mean the condenser never runs, even though the thermostat is calling for cooling.
Fix: contactor replacement and an electrical inspection of the disconnect and wiring.
Dirty condenser coil
The outdoor coil dumps heat outside. Cottonwood, grass clippings and East Texas pollen mat the fins, so heat stays in the system and vent temperatures climb.
Fix: professional coil cleaning and a refrigerant pressure check.
Thermostat set or wired wrong
A thermostat on FAN ON circulates room-temperature air between cooling cycles, which feels exactly like a broken AC. Dead batteries and miswired replacements cause the same complaint.
Fix: thermostat configuration, batteries, or replacement if the unit has failed.
Failing compressor
The compressor is the heart of the system. When it seizes or loses compression, nothing cools — this is the failure we work hardest to prevent by catching the smaller problems above early.
Fix: compressor replacement, or an honest replacement quote if the system is near end of life.
What Happens When You Call Us
Live answer
A real person takes your call — days, nights, weekends and holidays.
Full diagnostic
We check airflow, electrical, refrigerant pressures and the thermostat before naming a cause.
Flat-rate quote
You get the price and the options in plain language before any work starts.
Repair & verify
We complete the repair, then measure vent temperatures to confirm the system is cooling properly.
Keeping It From Happening Again
Nearly every warm-air call we run traces back to something a maintenance visit would have caught: a weak capacitor reading low on the meter, a coil coated in pollen, a slow refrigerant leak, or a drain line about to clog. East Texas summers run long and humid, and systems here work harder than the manufacturer's rating assumes.
Change your filter every 30 to 90 days, keep two feet of clearance around the outdoor unit, rinse the condenser fins gently with a garden hose in spring, and have the system professionally serviced before cooling season starts. That combination prevents the large majority of mid-summer failures.
If your system is over 12 years old and this isn't the first no-cool call this season, it's worth comparing repair cost to replacement before you spend more.
Cool Air Restored, Same Day
What East Texas homeowners say after a no-cool call.
10+ Verified Reviews
Amanda Hunt
Free State Heating & Cooling did an amazing job replacing our old HVAC system. The team was professional, on time, and explained everything clearly. Our home ha...
Tom
Called them for an emergency repair on a Saturday and they came out within an hour. Fixed the issue quickly and the price was very fair. Will definitely use the...
Robert Bennett
I've been using Free State for years and they never disappoint. Their maintenance program keeps my system running like new. Honest, reliable, and knowledgeable ...
Scott Morgan
These guys are the real deal. They came out, diagnosed the problem in minutes, and had it fixed the same day. No upselling, no pressure — just honest work. Refr...
Jessica B
We had a new system installed for our business and Free State handled everything from start to finish. Professional, clean, and efficient. Our employees have no...
Brian Dodds
Outstanding service! They replaced our entire system and the difference is night and day. The crew was courteous and cleaned up after themselves. Five stars all...
Martha Black
I'm so grateful for Free State Heating & Cooling. They found the issue that two other companies missed. Honest, hardworking, and they stand behind their work. C...
Carline
Fast response time, fair pricing, and excellent workmanship. They serviced our AC unit and it's running better than it has in years. Great local company!
John G
From the initial phone call to the completed job, everything was smooth and professional. They even followed up the next day to make sure everything was working...
Geoffrey Meshell
Free State installed a new heat pump for us and the whole process was seamless. They helped us choose the right system for our home and budget. Very happy with ...
Get Your AC Cooling Again Today
Call (903) 479-3015 for same-day service, or send the details below and we'll call you right back.
AC Not Cooling: Common Questions
Why is my AC running but not blowing cold air?+
The unit is powered and the blower is moving air, but something is stopping the system from removing heat. The most common causes we find in East Texas homes are a dirty air filter, a failed run capacitor, low refrigerant from a leak, a frozen evaporator coil, a bad contactor, or a thermostat set to ON instead of AUTO.
What should I check before calling a technician?+
Check three things: the thermostat (cooling mode, fan on AUTO, set at least 3 degrees below room temperature), the air filter (replace it if it's gray or clogged), and the breaker for both the indoor and outdoor units. If the outdoor unit is iced over, shut the system off at the thermostat and run the fan only to thaw it. If none of that restores cold air, it needs a technician.
Should I keep running the AC if it's blowing warm air?+
No. Running a system that isn't cooling can turn a small repair into a compressor replacement. If the air coming out of your vents isn't noticeably cooler than room air, shut it off and call us at (903) 479-3015.
How much does it cost to fix an AC that isn't blowing cold air?+
It depends entirely on the cause. A capacitor or contactor is a small, same-day part; a refrigerant leak repair or compressor failure is significantly more. We diagnose the system, then give you a flat-rate, up-front price before any work starts — you approve the number before we turn a wrench.
How fast can you get here?+
For emergency no-cool calls across our service area we are typically on-site within 60 minutes. A live person answers our phone 24 hours a day, including nights, weekends and holidays.
Is low refrigerant something you can just top off?+
Refrigerant doesn't get used up — if you're low, there is a leak. We find and repair the leak first, then recharge the system to the manufacturer's spec. Repeatedly adding refrigerant without fixing the leak wastes money and can damage the compressor.
Do you work on all AC brands?+
Yes. We service every major brand including Trane, Carrier, Lennox, Goodman, Rheem, York, American Standard and Bryant.