If your air conditioner is running but not cooling your house, Apple AC & Heat Services in Rockwall, TX, can help diagnose and repair the issue quickly. Whether it’s low refrigerant, dirty coils, or a failing compressor, our team of licensed HVAC technicians will get your system back to optimal performance with expert care and fast service.
When your AC unit hums along but fails to drop the temperature, it’s not only frustrating—it’s also a sign that something’s not working as it should. This problem is more common than you might think, especially during the heat waves Rockwall faces. Understanding why this happens can help you decide whether to try a quick fix or call in professional help. We’re here to help with both.
Common Reasons Your AC is Running But Not Cooling
One of the most frequent causes of this issue is low refrigerant. Your air conditioner needs the correct amount of refrigerant to absorb heat from the air. If there’s a leak or the system was undercharged, the unit might still run but won’t be able to cool your home effectively. This requires a certified HVAC technician to locate the leak, repair it, and recharge the system.
Another potential culprit is a dirty evaporator coil. When dirt or debris builds up on the coil inside your indoor unit, it interferes with heat transfer. The result? Your AC is technically operating, but it can’t do its job. This can also lead to frozen coils, making the problem worse and potentially damaging your system if left untreated.
Blocked air filters can also reduce airflow and make your AC struggle to cool the space. If your filter hasn’t been changed in a while, it could be the simplest fix. We recommend checking and replacing your filter every 30–90 days depending on use, pets, and allergies.
Electrical and Mechanical Issues That Stop Cooling
Sometimes, electrical components inside the unit can fail. A damaged thermostat, faulty capacitor, or failing contactor could cause the system to behave irregularly. In some cases, your outside unit might run, but the indoor fan doesn’t, or vice versa. These problems require diagnostic testing and safe handling of electrical parts, which should always be left to a trained HVAC pro.
Mechanical issues such as a failing compressor or broken fan motor also cause the AC to keep running without actually cooling. The compressor is the heart of the cooling cycle, and if it’s not functioning correctly, the refrigerant can’t circulate to remove heat. Likewise, if your fan isn’t moving air properly over the coils, your system won’t cool the house, even if it’s still turning on.
- Faulty thermostats
- Clogged drain lines
- Incorrect AC sizing
- Leaky ductwork
These issues often present with subtle signs—higher energy bills, uneven cooling, or short cycling. Our team at Apple AC & Heat Services is trained to pinpoint the source quickly and offer practical, affordable solutions.
How Our Rockwall HVAC Experts Can Help
Our first step is always a thorough diagnostic assessment. We inspect all components—refrigerant levels, coil condition, thermostat calibration, and airflow. This allows us to identify whether the problem is a simple airflow restriction or a more serious system failure.
We carry the tools and parts needed for most air conditioning repairs right on our trucks, so we can often fix the problem on the first visit. If a larger issue is uncovered—like a damaged compressor or an outdated unit—we’ll explain your options clearly, including repair versus replacement, and always respect your budget.
Our goal is to restore comfort quickly, prevent further damage, and ensure your AC runs efficiently, especially through the toughest Rockwall summers. We also offer seasonal maintenance plans to help prevent these issues before they happen.
What You Should Do Next
Start with a quick visual check. Is the outdoor unit covered in debris or blocked by plants? Is the thermostat set correctly and in cooling mode? Have you changed your air filter recently? These simple checks can save time and sometimes solve the problem.
If everything looks fine and your AC is still blowing warm air, it’s time to call Apple AC & Heat Services. Delaying service could cause more damage and lead to more expensive repairs. Keep an eye out for unusual sounds, higher electric bills, or humidity in the house, all of which suggest your AC is running inefficiently.
Even if your unit eventually starts cooling again, intermittent issues are signs that your system needs attention. Our team is always on call for diagnostics, emergency repairs, or a full tune-up.
Get the Help You Need to Stay Cool in Rockwall
If you’re looking for reliable, fast, and affordable AC repair in Rockwall, TX, Apple AC & Heat Services is ready to help. We specialize in fixing systems that run but don’t cool, and we never push services you don’t need. Our technicians are highly trained, friendly, and committed to keeping your home cool and comfortable no matter how hot it gets outside.
Don’t suffer through the heat. Give us a call today or schedule an appointment online. Whether it’s a minor repair or a major fix, we’ll get your AC back to working the way it should—so you can get back to enjoying your home.
