Problem 1: AC Not Cooling Properly
Possible Causes
- Dirty filters restricting airflow
- Low refrigerant levels
- Thermostat set incorrectly
- Dirty condenser coils
- Compressor failure
Solutions
- Clean filters (DIY)
- Check thermostat settings (DIY)
- Clear outdoor unit debris (DIY)
- Call technician if issue persists
Problem 2: AC Leaking Water
Possible Causes
- Clogged drain line (most common)
- Frozen evaporator coil
- Low refrigerant level
- Dirty filter restricting airflow
Solutions
- Clean drain line with vinegar (DIY)
- Replace filter (DIY)
- Check for ice formation (DIY inspection)
- Call technician if water continues
Problem 3: Strange Noises
Types of Noises
- Clicking: Non-inverter compressor or thermostat issue
- Grinding: Metal parts friction (urgent - call technician)
- Squealing: Belt or fan bearing issue
- Hissing: Refrigerant leak (call technician)
Problem 4: AC Not Starting
Troubleshooting Steps
- Check power switch (on/off)
- Check circuit breaker
- Verify remote batteries
- Reset thermostat
- Check for error codes on display
Problem 5: Uneven Cooling
Possible Causes
- Hot spots from direct sunlight
- Blocked airflow from furniture
- Room too large for AC capacity
- Thermostat in wrong location
Solutions
- Move furniture away from vents
- Use curtains to block sunlight
- Ensure thermostat is away from heat sources
- Check if AC size is adequate
When to Call a Technician
- Water leakage that doesn't stop
- Grinding or hissing noises
- AC blowing warm air
- Burning smell
- Frequent compressor cycling
- Error codes you can't resolve
Preventive Maintenance
Most problems can be prevented with regular maintenance: filter cleaning, annual service, and keeping outdoor unit clean.
Conclusion
Many AC issues are DIY-fixable with basic troubleshooting. However, refrigerant, electrical, and compressor issues require professional technicians.