When your air conditioner is running but your home still feels warm, uncomfortable, or humid, it’s more than just frustrating—it’s a warning sign. In Georgetown, TX, where summer temperatures regularly push HVAC systems to their limits, an AC that isn’t cooling properly can quickly turn into a serious problem.
Below, we break down the most common reasons your AC isn’t cooling, what you can safely check yourself, and when it’s time to call a local HVAC professional.

Common Reasons Your AC Is Not Cooling Properly
1. Dirty or Clogged Air Filter
One of the most common and overlooked issues is a dirty air filter. When airflow is restricted, your system can’t circulate cool air efficiently.
What to check:
- Replace filters every 1–3 months
- If you have pets or allergies, change them more frequently
Local insight:
Central Texas dust and pollen can clog filters faster than expected, especially during spring and summer.
2. Low Refrigerant Levels
If your AC is blowing warm air or struggling to cool your home, low refrigerant may be the cause. This usually means there’s a leak, not that the system simply “needs a refill.”
Warning signs:
- Warm air from vents
- Ice forming on the evaporator coil
- Hissing or bubbling sounds
⚠️ Refrigerant issues require licensed HVAC technicians and should never be handled DIY.
3. Thermostat Problems
A malfunctioning or incorrectly set thermostat can prevent your AC from cooling properly.
What to verify:
- Thermostat is set to cool
- Temperature setting is lower than room temperature
- Batteries are fresh
- Thermostat is not exposed to direct sunlight
Upgrading to a smart thermostat can also improve comfort and energy efficiency.
4. Dirty Condenser Coils
Your outdoor unit releases heat from your home. When the condenser coils are dirty or blocked by debris, heat can’t escape efficiently.
Common causes in Georgetown:
- Grass clippings
- Dust buildup
- Leaves and debris
Routine maintenance keeps coils clean and operating efficiently.
5. Electrical or Component Failure
Capacitors, contactors, and fan motors wear down over time—especially under the intense heat of Central Texas summers.
Symptoms may include:
- AC turns on and off frequently
- Outdoor unit not running
- Unusual noises or buzzing
These issues require professional diagnosis and repair.
When Should You Call a Local HVAC Professional?
If your AC:
- Is blowing warm air
- Runs constantly without cooling
- Freezes up
- Causes high energy bills
- Has not been serviced in over a year
…it’s time to call a local Georgetown HVAC expert.
Prompt repairs can prevent:
- Costly breakdowns
- Compressor damage
- Premature system replacement
Why Georgetown Homeowners Trust Local HVAC Experts
Working with a local HVAC company means your technician understands:
- Central Texas climate demands
- Local building codes
- Common system failures in the area
At Cook Heating & Air LLC, we provide reliable AC repair services designed to restore comfort quickly and efficiently—without unnecessary upsells or surprises.
Schedule Professional AC Repair in Georgetown, TX
Don’t wait for a minor cooling issue to turn into a major breakdown. Whether your system needs a quick fix or a detailed diagnostic, professional service ensures long-term comfort and efficiency.


