If you start up your air conditioner on a hot sunny day but the indoor temperature just isn’t dropping, there’s likely an issue preventing your system from keeping your home cool. From failing components to improper sizing, several common culprits may be behind your cooling issues.
Discover the top reasons your air conditioner is running but not cooling, learn troubleshooting steps to fix the problem quickly, and find out when to call the pros at Frank’s for emergency AC repair.
Common Reasons Why Central Air Isn’t Cooling Properly
If your air conditioner isn’t cooling your home, there are a few common culprits that could be at play. From dirty filters to faulty components, several issues can impede airflow, reduce cooling efficiency, or prevent your system from functioning correctly. Explore the top reasons your central air is not cooling properly to determine whether it’s time to call in the pros.
Clogged air filter
A dirty or clogged air filter is one of the most common reasons your air conditioner isn’t cooling your home effectively. Over time, pet dander, pollen, dirt, and other debris can accumulate on the filter, blocking airflow and preventing cool air from circulating. Without replacement, your air conditioner may stop turning on altogether.
Check your air filter every one to three months and replace it as needed to promote airflow and reduce strain on your system.
Incorrect thermostat settings
Your thermostat is the control center of your AC, telling it when to turn on and off based on the temperature you set. If your thermostat is set to “on” instead of “auto,” your AC unit will continue to run without actually cooling your home.
Refrigerant leaks
If refrigerant levels drop too low due to a leak or improper charge, your air conditioner will struggle to cool your home. Common signs that a refrigerant leak is causing your cooling problems include poor airflow, warm air coming from the vents, and ice on the evaporator coils.
Frozen evaporator coil
The evaporator coils are a key component of your indoor AC unit, absorbing heat from the air during the cooling process. Refrigerant leaks, blockages, or blower fan issues can cause ice to form on the coils, preventing them from functioning properly and making it harder for your air conditioner to cool your home.
Dirty condenser coils
Dust, dirt, or debris buildup on the coils of your outdoor AC unit reduces its ability to expel heat and prevents your system from cooling your home properly. The buildup puts excess strain on your AC, forcing it to work harder and use more energy to try to cool your space. Your unit may run continuously without significantly lowering the temperature of your home.
Improper sizing
If your air conditioner is too small for your home, it will run consistently without ever reaching your desired temperature. By constantly running, it continues to waste energy and put excess wear on your system, leading to early breakdowns and a shorter lifespan.
Faulty compressor
Your AC compressor pressurizes refrigerant to cool your home. If the compressor fails, your air conditioner may continue to run, but won’t keep your home cool. Compressor issues are often accompanied by warm air from the vents, strange noises, and constantly tripping breakers.
Check Your Thermostat Reading Against Room Temperature
If you suspect the thermostat is the cause of your cooling issues, there are several troubleshooting steps you can take to try to get your AC working properly again. Start by checking that your thermostat is on the “cool” or “auto” setting, not “heat” or “on.” Then, confirm that the set temperature is lower than the current room temperature.
If the temperature isn’t displayed on the thermostat screen or differs from the actual room temperature, there may be a problem with the sensor or battery. Try replacing the batteries to see if the issue resolves. If not, contact a trusted HVAC professional for further inspection.
When To Suspect a Problem With the AC Unit Itself
If your thermostat appears to be working correctly, but your AC still isn’t cooling, there’s likely a more significant issue within the unit. A clogged drain line, refrigerant leak, or failing component may be preventing your system from cooling effectively. Begin by assessing your air conditioner for other common signs of internal problems, including:
- Strange noises
- Unpleasant smells
- Warm air coming from the vents
- Rising energy bills
- Visible damage or leaks
- Limited airflow
If you notice any of the above signs or can’t figure out where the problem is coming from, contact a reputable HVAC company near you. They’ll quickly diagnose the issue and recommend the most effective solution to get your cooling back on track. Whether it’s a quick fix or complete system replacement, addressing the issue quickly is the best way to minimize damage and costly repairs.
Contact Frank’s for AC Repair in Amarillo
If your AC is running but not cooling your home, don’t hesitate to call Frank’s for repair. Our certified HVAC technicians have the tools and expertise to diagnose the underlying issue and find a quick, lasting solution that gets your home back to a comfortable temperature. Whether you’re dealing with a clogged filter, dirty coils, or a faulty compressor, our team can tackle any cooling issue that comes their way.
Contact us to schedule your AC repair today! We proudly offer cooling services throughout Amarillo and nearby areas.
Frequently Asked Questions
Is it normal for the AC to run constantly on hot days?
It’s not uncommon for your air conditioner to run continuously during very hot weather. With high indoor temperatures, your system has to work harder to cool your home, resulting in longer run times.
How can I tell if I need a repair or just maintenance?
If your air conditioner isn’t cooling effectively, but doesn’t show signs of major malfunctions, it may only require a tune-up. During the maintenance visit, our experts will perform key tasks, such as changing the air filter and cleaning the coils, which can help get your system up and running again.
Should I turn off my AC if it’s not cooling?
If your air conditioner isn’t cooling your home, it’s best to turn off your system to prevent further damage. Continuing to run your system without repair can lead to progressive and costly problems. Contact our experts to schedule a same-day inspection and a quick diagnosis.
How can I tell if my AC is losing refrigerant?
The most common signs of an AC refrigerant leak include warm air coming from the vents, hissing or bubbling noises coming from your unit, and ice buildup on the system. If you notice any of these red flags, contact our team for repair as soon as possible.
