Common AC Problems: Tips to Troubleshoot & When to Call an HVAC Expert

When your air conditioner stops working in the middle of a sweltering summer day, panic can set in fast. Before you pick up the phone for emergency AC repair, it’s worth taking a few moments to troubleshoot some common problems. Many AC hiccups have simple fixes you can tackle yourself—but there are clear signs that tell you it’s time to call an expert for AC repair in Columbia, SC to prevent further damage and keep your system running safely.

Start With These DIY Checks

First, check the easiest issues that can mimic a major AC breakdown:

• 1. Check the Circuit Breaker: If your AC won’t turn on at all, the problem could be as simple as a tripped circuit breaker. Head to your electrical panel and look for the breaker labeled “AC” or “HVAC.” If it’s flipped to the “off” position, switch it back on. If it trips again immediately, don’t keep resetting it—that indicates a deeper electrical problem that needs professional attention.
• 2. Inspect and Change the Air Filter: A clogged air filter can severely restrict airflow, causing your system to work overtime, freeze up, or blow warm air. If you haven’t replaced your filter recently, pull it out and check for dirt and dust buildup. A fresh filter can restore airflow and efficiency in minutes.
• 3. Double-Check the Thermostat: It’s surprising how often the thermostat is the culprit. Make sure it’s turned on, set to “cool,” and programmed correctly. Dead batteries can also cause your thermostat to shut down completely. If your model uses batteries, replace them and see if that solves the problem.

If you’ve worked through these steps and your AC still isn’t cooperating, it’s time to look for symptoms that signal you need professional help.

When It’s Time to Call an HVAC Expert

Not every AC problem can be solved with a quick filter change. Here are a few signs that your system needs a licensed technician’s expertise:

• 1. Warm Air or Weak Airflow: If your AC runs but blows warm air or you notice weak airflow from your vents, you could have low refrigerant levels, a compressor issue, or a problem with your ductwork. These aren’t DIY fixes: handling refrigerant requires special certification and tools.
• 2. Strange Noises: Banging, grinding, or squealing noises are never normal. These sounds can indicate loose or broken components inside the compressor or blower, worn belts, or motor issues. Running your AC with these problems can cause greater and more expensive damage.
• 3. Water Leaks or Ice Buildup: Water pooling around your indoor unit or ice forming on the coils is another red flag. A clogged condensate drain line, refrigerant leak, or malfunctioning blower fan can all cause moisture problems that lead to mold growth or serious system damage.
• 4. Frequent Cycling or Constant Running: If your AC keeps turning on and off rapidly (short cycling) or runs nonstop without cooling properly, you could have a failing thermostat, electrical issue, or a compressor problem. These can skyrocket your energy bills and strain your system to the point of failure.

Trust a Professional for Lasting Comfort

Your AC is a major investment in your home’s comfort. While basic troubleshooting can solve simple hiccups, ignoring the signs of bigger problems can cost you far more down the road. If your AC is showing any of the warning signs above, it’s time to schedule an appointment with an experienced HVAC technician.

Stay cool, stay safe … and let the experts handle the tough stuff!

Contact Fulmer Heating & Cooling today for AC repair in Columbia, SC!