Knowing about AC unusual noises helps us to distinguish the problems of the unit. The new AC units don't have much sound. High quality and new technologies have helped reducing the AC noises while working. So, if you hear any unusual noise from your air conditioner unit, don't hesitate and find the reason, because it can be a sign of a big problem and your air conditioner unit may need some repair.
Note: never neglect any small fault in your AC unit. It will turn into a big problem and cost you a lot to repair.
Here, we are going to talk about some common causes of unusual noises in your indoor or outdoor air conditioner unit.
Air conditioner unusual noise for not being level
The most common cause of air conditioner squeaking noise is not being properly installed. If your outdoor unit is not level, you will hear an unusual squeaking noise from your AC unit. So, call a skillful installer to fix it for you.
An external object is making the air conditioner unusual noise
Pay attention to the noise you're hearing from your AC unit. If your air conditioner unit is working normally, without any noise, and then suddenly there is a loud noise, an external object has probably entered the outdoor unit.
Tip: external objects entering the air conditioner outdoor unit is so normal since the unit is installed outdoor and any blow of wind can make an object get into the unit.
In order to remove this problem, first unplug the device and then use a flashlight to examine inside the AC outdoor unit. So, there will be no need for your air conditioner repair.
The air conditioner front panel is making an unusual noise
The air conditioner front panel helps with adjusting the direction of the air flow coming out of the unit. If this panel is not properly fixed during the installation, it will make unusual noise while the unit is working. Just fix the panel to remove this problem.
Air conditioner broken fan blades are making noise
An external object may have entered the outdoor unit and broken or bent the fan blades. So, you will hear a clanking or grinding noise. To solve this problem, you should remove the outdoor unit front panel to check the fan blades and replace the fan if necessary.
Warning: don't forget to unplug the air conditioner unit and use safety equipment before any troubleshooting or repair.
Loose outdoor unit legs can be a source of unusual noise
Most of the air conditioner unusual noises are caused by outdoor unit components. This time, loose legs of the outdoor unit can make a clanking noise. The AC repair in this case is so easy. Just use a wrench to tighten the nuts of the legs to remove this annoying noise.
Fan is in need of lubricating for not making any unusual noise
Lubricating the air conditioner connections should be done during AC service before using the device in cooling season. When you don't use your air conditioner unit in heating seasons, the oil is dried and if you don't lubricate the internal components, you will hear unpleasant grinding like sound.
An excessively hot compressor can make an air conditioner unusual noise
The compressor should be turned off several times a day to prevent it from heating up. If the compressor's temperature goes too high, you will hear a squeaking sound that can badly hurt your device
Compressor oil leaking is a reason for air conditioner unusual noise
We mentioned that one cause of AC unusual noise is lack of lubrication but using too much oil for compressor can also lead to oil leaking and as a result, some extra noises from the unit.
Compressor has moved from its place and makes unusual noises
If the outdoor unit is not installed properly and the compressor has moved from its place, you will hear a loud vibration or pulsing noise when the unit is working. The bolts that hold the compressor may be loose or the rubber pads are deteriorated. Fix the compressor in its place to avoid this unpleasant noise.
A failing compressor makes an air conditioner unusual noise
A failing compressor motor can make a grinding sound. Also, if one of the compressor components is loose or broken, you will hear a cranking noise. The compressor should be examined carefully and replaced if necessary.
Faulty electrical components can make an air conditioner unusual noise
If your air conditioner unit is frequently clicking on or off, there may be a problem with the thermostat components and even the relay switch.
Note: if you hear any unusual noise from your AC, turn it off immediately to avoid further damages.
If you are not skilled enough to troubleshoot or repair an air conditioner unit, don't touch it when you hear any unusual noise and call a technician. But if you want to be an AC technician, you can watch air conditioner training videos in HelloTechnic website to learn everything about air conditioner installation, service, troubleshooting and repair, all through films and animations.
