Why Is My AC Not Cooling? Here’s What You Should Know
Is your home feeling warmer than it should be? If you’ve been wondering, “Why is my AC not cooling?” you’re not alone. This issue is one of the most common HVAC problems in Dallas homes. Fortunately, with some insight and the right help, you can quickly get your system back on track.
Why Is My AC Not Cooling? (Main Causes and Solutions)
It can be frustrating when your air conditioning stops keeping your home comfortable, especially in the Texas heat. Let’s explore the possible reasons and what you can do about them.
Blocked Airflow: A Silent Culprit
A clogged air filter or blocked vent can limit airflow, preventing cool air from circulating correctly. This is one of the easiest issues to fix:
- Check your air filter: If it’s dirty, replace it.
- Inspect vents: Ensure none are blocked by furniture or curtains.
Clean airflow is key to maintaining efficiency and air quality.
Low Refrigerant Levels
Refrigerant absorbs heat from your home. Your system can’t cool effectively if there’s a leak or low refrigerant levels.
Signs of low refrigerant:
- AC blowing warm air
- Hissing sounds near the indoor unit
- Ice buildup on refrigerant lines
This issue requires professional HVAC repair—don’t try to fix it yourself.
Thermostat Trouble
Sometimes, the issue is not with the AC but with the thermostat. A miscalibrated or faulty thermostat can send the wrong signals to your HVAC system. Learn more in our upcoming post on how to troubleshoot a thermostat.
Dirty or Damaged Coils
Evaporator and condenser coils play a significant role in cooling. When they’re dirty or damaged, your AC struggles to remove heat.
Tip: Schedule regular maintenance to prevent this.
Troubleshooting Frequent HVAC Issues
Here’s what you can try before calling in the pros:
- Set the thermostat to “Cool” and lower the temperature.
- Replace your air filter.
- Reset your circuit breaker if the system is unresponsive.
- Inspect the outdoor unit—clear away any debris or leaves.
However, if none of these work, you may face a more serious issue, like compressor failure. Stay tuned for our post on signs of a lousy refrigerator compressor.
Common HVAC Problems in Dallas Homes & How to Fix Them
With our hot summers and sudden seasonal changes, Dallas homes often experience the following:
- Overworked AC units due to extreme heat
- Short cycling—when your unit turns off and on too frequently
- Electrical issues from fluctuating demand
What is short-cycling HVAC? We’ll dive into that in a later post.
Need Help? FERSA HVAC Is Just a Call Away
If you’re still wondering, “Why is my AC not cooling?”—let us help. At FERSA HVAC Heating & Air, we bring over 18 years of experience to every job. Whether in Dallas, Mesquite, Garland, or Plano, our expert technicians are ready to troubleshoot your HVAC system and restore your comfort.
Call us today at (214) 449-8475 and get your cool air flowing again!