Do not install deteriorated rubber gaskets or leave them unchanged after prolonged use
This is a common cause of loud noises and strong vibrations from the outdoor unit of your air conditioner. Exposed to outdoor elements such as rain, sun, and wind, the rubber gaskets or pads underneath the unit’s base can harden, deteriorate, or fall out over time, creating gaps that lead to vibrations.
Additionally, the fixing screws of the base may loosen, causing the outdoor fan to operate unstably and generate noise and strong vibrations. The solution is relatively simple: either replace the rubber gaskets or tighten the screws. However, if the installer initially forgot to install the rubber gaskets, this is a serious oversight that should be addressed to prevent future inconveniences.

Lack of regular cleaning of the outdoor unit
If the outdoor unit is not cleaned periodically, dust and dirt will accumulate, affecting the smooth operation of its components and resulting in annoying noises during the air conditioner’s operation. Therefore, regular cleaning of the outdoor unit is crucial to maintaining efficiency and minimizing noise.

Foreign objects entering the outdoor unit
Another reason for loud noises from the outdoor unit could be the accidental entry of foreign objects. Unlike dust accumulation, this could be an unexpected intrusion of creatures like rodents or lizards, or other debris, which then get trapped inside, causing loud noises and unpleasant odors. If you suspect this issue, timely inspection and remediation are necessary to prevent severe damage.
Issues with the outdoor fan
During the rainy season, the outdoor fan operates continuously and is exposed to rainwater, leading to the drying out of the internal lubricating oil, which results in unpleasant noises as the fan turns. Additionally, the fan blades may break or become damaged, causing the fan to spin off-axis and create loud noises. Occasionally, internal wiring may come into contact with the fan blades, producing abnormal sounds.
The Noisy Air Conditioner: A Simple Fix for a Quieter, Cooler Home
“A noisy air conditioner is an unusual and unwanted occurrence. It’s important to identify the root cause of this issue to implement effective solutions. From faulty parts to improper installation, there are numerous potential reasons why your air conditioner is making a ruckus. Understanding these causes is the first step towards restoring peace and comfort to your home.”
The Noisy Air Conditioner: A Quick Fix to Save You Money
The loud humming noise coming from your air conditioner’s outdoor unit can be a nuisance and a cause for concern. Many households face this issue, and it is essential to address it promptly to ensure the comfort and peace of your home. There are several reasons why your air conditioner’s outdoor unit may be making excessive noise, and understanding the causes can help you take the right steps to resolve the issue.