As temperatures rise in Mount Pleasant, a well-functioning air conditioner becomes crucial for maintaining a comfortable home. But what do you do when your AC is not cooling properly, specifically when it is showing signs of not cooling? Before calling a professional, consider these common issues that you can troubleshoot on your own. Your AC system is designed to circulate cool air by absorbing heat from inside your home and releasing it outside. If it’s blowing warm air or not blowing cold air at all, here are five common reasons why—and how to fix them.
1. Thermostat Issues
One of the first things to check when your air conditioner isn’t cooling is the thermostat settings. If your thermostat is set to “Fan” instead of “Auto,” your AC may be running without cooling, simply circulating indoor air. Additionally, a dead or weak battery can cause your system to behave unpredictably.
Ensure your thermostat is set to “Cool” and adjusted to your desired temperature. Try replacing the batteries and checking for error codes. A faulty thermostat may need to be replaced, especially if it doesn’t respond or displays incorrect readings. This minor adjustment can quickly get your air conditioner blowing cool air again.
2. Air Filter Problems
A dirty filter or clogged air filter is one of the most common culprits behind poor AC performance. Over time, dust, pet hair, and debris can accumulate in the filter, restricting airflow and preventing your indoor unit from operating efficiently. This results in weak airflow and warm air coming from your vents.
If you live in Mount Pleasant or the surrounding areas, we recommend replacing or cleaning your air filters every 2 to 3 months. For homes with pets, high pollen levels, allergies, or certain medical conditions, monthly replacements may be necessary. A clean air filter enables your air conditioning system to deliver consistent, cold air, enhancing both indoor air quality and your overall quality of life.
3. Dirty Condenser Coils
Your condenser unit, located outside your house, plays a vital role in expelling heat. Over time, it can become coated with dirt, grass clippings, and debris, resulting in dirty coils within your system. This buildup makes it difficult for the AC to release heat, resulting in warm air blowing from your vents.
To resolve this, turn off the power and gently rinse the coils using a hose. Be careful not to bend the fins or use high-pressure water. Keeping your outdoor unit clear can restore cooling performance and reduce the strain on your AC. If cleaning doesn’t help, a failed or faulty compressor could be to blame, requiring professional air conditioner repair.
4. Refrigerant Leaks
Your air conditioner relies on refrigerant to absorb heat and produce cool air. If there’s a leak, your system may run but won’t cool your home effectively. Signs of a refrigerant issue include ice on the evaporator coils, warm air from vents, or bubbling/hissing noises.
Refilling refrigerant is only a short-term fix. The source of the leak must be located and sealed by a licensed HVAC contractor. Additionally, refrigerant leaks pose health risks and can damage the system. If you suspect a leak in your AC system, contact a technician in the Mount Pleasant area for prompt service.
5. Evaporator Coil Freeze-Ups
Frozen evaporator coils can stop your AC from absorbing heat, leaving your system unable to cool the air. Causes include a dirty filter, low refrigerant levels, or issues with the blower fan. You might notice frost on the indoor unit or that the system is running but not producing cold air.
Turn off the air conditioner and switch the fan on to help melt the ice. Then inspect your filter and thermostat for any issues. If the coils freeze up again, schedule a professional inspection. Consistent maintenance of the blower unit and evaporator coils ensures better cooling and avoids further damage.
Bonus Tip: Ductwork and Airflow Issues
Sometimes, the issue isn’t with your AC itself but with how air is flowing through your home. Loose or leaky ductwork can let cool air escape before reaching your rooms. If some vents are blowing air while others aren’t, a leak in your system’s ductwork may be the issue.
Homeowners in Mount Pleasant can hire a professional, such as Smoak’s Comfort Control, to inspect the ductwork in their attic or crawlspace and recommend any necessary repairs or replacements. For professional help, it is recommended. Ensuring proper airflow maximizes your system’s efficiency and maintains even cooling throughout the house.
AC Unit Size and Capacity
A system that’s too small for your square footage will run constantly but still fail to cool the home effectively. On the other hand, an oversized unit may short cycle, resulting in reduced comfort and lower energy efficiency. A professional technician can help determine if your air conditioner is appropriately sized.
In some cases, adding a ductless mini split to problem areas or upgrading the home comfort system may resolve persistent cooling issues. Choosing the right size ensures optimal performance, efficiency, and comfort for your Mount Pleasant home.
Troubleshooting Common Issues
If your AC is not cooling, try the basics: replace a dirty filter, check your thermostat settings, and clean your condenser coils. These small steps can often restore performance and avoid unnecessary service calls. Routine preventative maintenance extends the life of your AC system and helps prevent breakdowns.
Still stuck? Visit Smoak’s Comfort Control or call them today to schedule an appointment with a certified HVAC technician for expert guidance and assistance.
Preventing Future Issues
HVAC preventative maintenance is the key to long-term comfort and energy efficiency. Schedule semi-annual HVAC maintenance with a Mount Pleasant technician to inspect your evaporator coils, ductwork, and condenser unit. This helps catch minor problems before they become costly repairs, allowing you to save money in the long run.
Keep the area around your outdoor unit clear of obstructions and ensure your thermostat settings are accurate. These simple practices go a long way in preventing your air conditioner from blowing warm air when you need it most.
Conclusion and Next Steps
If your air conditioner is not blowing cold air, don’t panic—many problems can be fixed by a professional. Start by checking the filter, thermostat, and coils. For more serious issues, such as refrigerant leaks or a faulty compressor, trust the experts at Smoak’s Comfort Control to help you keep your home cool and comfortable.
Routine maintenance protects your investment and ensures year-round comfort. If troubleshooting doesn’t solve the problem, it may be time for a new system. Contact our team for expert advice and explore energy-efficient options tailored to your home.
Don’t sweat through another hot day. Contact Smoak’s Comfort Control today to schedule an appointment for AC repair, maintenance, or replacement in Mount Pleasant and the surrounding areas.