Window ACs are a good option for cooling a single room. They are compact, affordable, and do their job until something goes wrong. Sometimes the unit may make strong noises or not cool as desired. Leakage is another prevalent concern. Fortunately, there’s a fix for these issues, and most of the time, you do not need a technician for it.
Here are some common window AC problems and their solutions.
1. Not Cooling Properly
Sometimes, your AC may blow warm air. At times, it may fail to cool the room adequately.
To overcome this:
Check installation: Having a unit installed that is not level could affect the drainage and performance. Your unit must be installed slightly tilted outward. It ensures the condensation drains outside.
Look for air leaks: If there are gaps around the unit, hot air might be getting in. Reseal if possible.
Filter cleaning: A clogged filter can also affect cooling efficiency. To overcome:
- Take the filter out
- Vacuum it
- Wash it thoroughly
- Let it dry
- Install it back in
If the filter is damaged, replace it.
Inspect the coils: The AC has two coils: the evaporator and the condenser. Either or both of them may be dusty. So, clean them with a brush or a coil cleaner. Get rid of all the build-up to ensure easy airflow.
Check temperature settings: Keep your window AC’s temperature between 72°F and 76°F.
However, if none of it works, the concern may be grave. So, consult an expert.
2. Unusual Sounds or Loud Noises
Your window AC may produce a buzzing sound. It may hint at an underlying concern.
To overcome this:
Check for untightened components: Remove the front panel. Inspect it. Does it have any loose parts? If yes, tighten them up.
Clean and lubricate the fan motor: Build-up of dust causes friction. Carefully clean all dust from the motor and bearings. Use one or two drops of lubricant. Silicone spray or machine oil works best.
Look at the fan blades: The noise could be caused by chipped or bent blades. Replace the damaged ones and balance them all.
Check the compressor: The noise may be metallic or loud. It may be coming from the compressor. So, call a technician.
3. Water Leaks
To overcome water leaks:
Clean the condensate drain:
- Locate it at the base of the unit. In some ACs, it may be near the evaporator coil.
- Remove any dirt or debris that is possibly blocking the drain hole
- Use a vacuum or dry/wet cloth to remove stubborn clogs
Check the Angle
Tilt your window AC downward. Ensure it is angled correctly to drain properly.
Inspect the Seals
Worn-out seals push moisture back in. So, replace seals that look damaged.
Dehumidify
Even the most well-functioning AC may not cool well in humid climates. So, install a separate dehumidifier. It can reduce the moisture load.
4. Won’t Power on or Kicks Out Sometimes
Try these simple checks:
- Use a breaker box: It may be that a breaker tripped or a fuse blew.
- Try another outlet: Plug a different device into the same outlet to check if the issue is with the outlet itself.
- Inspect the power cord: Frayed or exposed wires pose a significant safety risk. Also, if it is worn out, don’t take a risk and replace the cords.
- Check out the control board: If you are comfortable, unplug the unit and check for obvious signs of burnt wiring or loose connectors.
Not solved yet? It may be the thermostat, the compressor, or the selector switch. Call in the professionals for help.
5. Ice Build-up
- Unplug the unit and let the ice melt naturally, placing towels below to absorb the melting water
- Clean the filter and check for any airflow blockage
Final Thoughts
Now that you are aware of the common window AC problems and their solutions, take corrective actions if you face any of these issues.