Window-type Air Conditioner Common Problems and How to Troubleshoot

If you own a window-type air conditioning unit, you may be curious about the different types of air conditioner issues you are liable to encounter. In that case, read on to learn everything you will need to know about window-type air conditioner common problems and how to troubleshoot.

Strange Sounds

Window-type Air Conditioner Common Problems and How to TroubleshootUnusual sounds are common AC issues. If you realize any loud wailing sounds coming from your air conditioning unit, the unit’s fan belt is often the cause. If the fan belt has been dislodged, repositioning it back into place should solve the issue. However, if the fan belt sustained considerable damage, you may have to replace it to put an end to the strange sounds.

Low Refrigerant

Low levels of refrigerant in your AC is often because of a leaky air conditioning unit. In that case, you have to seek the aid of an AC professional. The other possible reason for low levels of refrigerant would be insufficient amounts of refrigerant added to your air conditioning unit during the installation process of the AC unit. If this proves to be the case, you would have to consult your air conditioner instruction manual to establish the proper amount of refrigerant for your particular device. Always take note that too much refrigerator stands to bring about issues of its own.

Pungent Smell

Pungent smell is another common AC related issue. Bad smells are often caused by massive buildups of moisture content in your air conditioning unit.  Since ACs frequently transition between cooling and heating a room, this readily provides room for the formation of moisture through condensation and other chemical processes. You can avoid this problem by cleaning your AC’s filter and changing it accordingly at frequent intervals.


If your AC’s grills are blocked, you will need to clean the unit’s motor, fan, and fins. Wipe thoroughly down the sections above using a clean washcloth. However, ensure you do not dampen the washcloth, as these sections should not get wet under any circumstance. Also, to remain on the safer side, ensure your air conditioning unit is unplugged before you start the cleaning process. Once the parts have been cleaned sufficiently, blockage should not be a problem anymore.

Thermostat Issues

If your AC’s thermostat sensor were dislodged, your Air conditioner unit’s temperature would start to fluctuate rapidly. If you believe this is the case, restore your thermostat sensor carefully to its proper position, ensuring it does not come into contact with your AC’s coil.

Coil Problems

Faulty coils can prevent the air emitted by your air conditioning unit from circulating well. To tackle this problem, check your AC’s condensate drain frequently for any clogs. Additionally, take care not to allow high amounts of debris and dirt buildup on your coil, as this equally stands to damage the unit’s compressor and fan. Just as the other discussed air conditioner issues, ensure your air conditioning unit is safely unplugged before you try to check its coil.