AC not cooling like before? Here are the most common reasons and quick fixes
Follow UsA dirty air filter is one of the most common reasons why an AC stops cooling efficiently.
If the AC unit is too small for the room size, it may struggle to cool the space properly.
If your AC is not cooling properly, there are a few simple checks you can try before assuming there is a major problem.
There is nothing more frustrating than turning on your air conditioner during a hot day and realising that it is not cooling the room like it used to. Many people think that their AC is damaged or needs to be replaced. However, this is not what always happens. In many situations, poor cooling is caused by small issues such as dust buildup or minor faults. Understanding these common reasons can help you identify the problem and sometimes even fix it yourself before calling a technician.
SurveyPossible reasons behind AC not cooling properly
Dirty air filter
A dirty air filter is one of the most common reasons why an AC stops cooling efficiently. When dust collects on the filter, it blocks airflow and makes it difficult for the system to pull in warm air from the room. This reduces the overall cooling performance.
It is advised to clean the air filter regularly to remove dust and dirt. Washing or replacing the filter every few weeks can help maintain proper airflow and improve cooling.
Also read: Spilt AC vs window AC: Which one should you buy and why
Low refrigerant level
Refrigerant is the gas inside the AC that absorbs heat from the room. If the refrigerant level drops, the cooling process becomes less effective. This usually happens due to a leak in the system. You may notice signs such as a hissing sound or ice forming on the refrigerant line.
Thermostat malfunction
The thermostat controls the temperature settings of your AC. If it is not working properly, it may send incorrect signals to the system. This can lead to uneven cooling or stop the AC from cooling altogether.
Also read: 5 tips to make AC cool your room faster this summer
Compressor problems
The compressor is responsible for circulating refrigerant through the AC system. If it fails or struggles to start, the AC will not cool effectively. Compressor issues are usually serious and should be handled by a professional technician.
Wrong AC size
If the AC unit is too small for the room size, it may struggle to cool the space properly. Make sure the AC capacity matches the size of the room. Choosing the right-sized AC is important for effective cooling.
What you should do
If your AC is not cooling properly, there are a few simple checks you can try before assuming there is a major problem. In many cases, basic maintenance can restore the cooling performance.
Start by cleaning the air filters, as dust buildup can block airflow and reduce efficiency. Most filters can be removed easily and washed with water. Allow them to dry completely before placing them back in the unit. You should also inspect the outdoor unit to make sure it is not blocked by dust, leaves or other substances.
Also read: 5 ways to improve AC efficiency and reduce electricity bills during summer season
If the AC still does not cool well after these basic checks, it is best to contact a professional technician. Issues such as refrigerant leaks, compressor failure or electrical faults require expert inspection and repair. Regular servicing can also help prevent such problems and keep your AC running efficiently during the hot months.
