A malfunctioning air conditioner can turn a comfortable home into an uncomfortable one, especially during the peak of summer. Whether your system is blowing warm air, failing to turn on, or struggling to maintain a consistent temperature, there are a few common reasons why it may not be functioning properly. As a trusted AC repair company in Lexington, SC, MacDavy Heating & Air is here to help diagnose and fix your AC issues. Here are three major reasons your AC might not be working and what you can do about it.
1. Dirty or Clogged Air Filters
One of the most common reasons for AC failure is a clogged air filter. Over time, dust, dirt, and debris accumulate in the filter, restricting airflow and reducing the efficiency of your system. When airflow is limited, the AC unit has to work harder to cool your home, which can lead to overheating and shutdowns.
Signs of a Clogged Air Filter:
- Reduced airflow from vents
- Increased energy bills
- Uneven cooling throughout your home
Solution:
Check your air filter every 1-3 months and replace it as needed. A clean filter helps improve airflow, increases efficiency, and extends the lifespan of your system. If replacing the filter doesn’t solve the issue, it might be time to contact an air conditioner repair company in Lexington, SC for a professional inspection.
2. Refrigerant Leaks
Refrigerant is the lifeblood of your air conditioning system. It absorbs heat from inside your home and releases it outdoors, keeping your indoor environment cool and comfortable. If your AC system is low on refrigerant, it won’t be able to cool effectively.
Signs of a Refrigerant Leak:
- Warm air blowing from vents
- Ice buildup on refrigerant lines
- Hissing or bubbling noises near the unit
- Higher than usual energy bills
Solution:
Refrigerant leaks require professional repair. Unlike other AC issues, you can’t simply “top off” the refrigerant. An experienced technician from a reliable AC repair company in Lexington, SC can locate and fix the leak, then recharge the system with the correct amount of refrigerant to restore efficiency.
3. Faulty Thermostat
Sometimes, the issue isn’t with your AC unit itself, but with the thermostat controlling it. A malfunctioning thermostat can cause inconsistent cooling, short cycling, or prevent the system from turning on altogether.
Signs of a Faulty Thermostat:
- AC won’t turn on or off as expected
- Incorrect temperature readings
- Unresponsive controls
Solution:
First, check that the thermostat is set to the correct cooling mode and temperature. If it’s battery-powered, replace the batteries. If the problem persists, a professional AC technician can diagnose whether the thermostat needs recalibration or replacement.
Call a Professional for Reliable AC Repairs
While some AC issues have simple fixes, others require expert attention. If your AC isn’t working properly, MacDavy Heating & Air is here to help. As a leading air conditioner repair company in Lexington, SC, we provide fast, reliable service to restore comfort to your home. Don’t wait for minor problems to turn into costly repairs—contact us today to schedule a service and keep your AC running at peak efficiency!