For The Home

Common Air Conditioning Problems and Their Solutions



Everyone loves the summer; it’s when they finally get to go to the beach, eat ice cream, visit water parks, and wear just one layer of clothing. However, when you’re indoors, not by the pool or on the beach, it can get too hot! Having an air-conditioner has become a necessity rather than a luxury, especially in places with long, hot summer months. That means you’ll need your AC to run without any complications. If you have just installed a new one or your old one has been acting up, read on to learn about some common AC problems you might face and how to handle them.

No Cold Air

It is quite annoying when your air conditioner doesn’t perform its basic function: cooling. This can happen for several reasons, most of which are easy to fix. Usually, it’s because of a dirty filter that is blocking the cool air. It could also be your outdoor compressor that is dirty. Both cases can cause a build-up of ice around the coils, increasing air blockage. Some AC filters are easy to clean, or you can resort to changing it on a monthly basis. If a blockage is not the issue, then the problem could be due to a low refrigerant level, which means you’ll need to add coolant to the system. Your AC may also not be blowing cold air because the air outside is too hot.

It Won’t Turn on

This is also a common one; you keep clicking the on button, but there’s no sign of life. It’s a definite thermostat problem, so check if it needs new batteries first. If that still doesn’t work, check thermostat settings to make sure it’s on the cooling mode with the exact temperature you want. If the batteries and settings are all in check, then it might have to do with the circuit breaker. In that case, you may need to reset it. There could also be a blown fuse or an issue with the wires that will require a visit from an electrician.

Loud or Unusual Sounds

Even though some people think otherwise, air conditioners are not supposed to be noisy; they’re supposed to silently cool the air around you. If your AC is making noise, it could be an indicator of a bigger problem, depending on the sound. Screeching or thumping sounds mean you have a motor or blower problem, while hissing sounds could indicate a refrigerant leak.


Don’t be a hero, when you hear any kind of sound coming out of your AC, call a specialist to detect and solve the problem. When it comes to these problems, you might need to replace certain parts or make other major adjustments, which is why the Cool Earth Aircon Servicing experts recommend having a professional look at it. You need the right diagnosis to get the correct spare parts. 

A Leaky AC

The sound of dripping water from an AC could drive a person insane, not to mention it’s an indicator of a developing problem. Water leaks can cause a higher power consumption, damage the compressor, cause uneven cooling, or lower the overall efficiency of the unit. Leakage can occur inside the home or on the outside. When it’s inside, try to clean the drain line of any clogs that might be causing water build-up. If that doesn’t do the trick, it might need to be replaced altogether.


An outdoor leakage can be because the weather outside is below 60 degrees, causing the unit to freeze and leak, which is completely normal. Alternatively, it might be due to dirty or damaged filters. If you replace them and still have a leak, you might need to add more refrigerant or you could possibly be dealing with a broken condensate pan.

It Won’t Turn off

No matter how hot it is outside, your air conditioner needs to rest after running all day. If your AC won’t shut down, there could be an issue with the fan. Usually, the fan’s relay can get stuck. Try turning the fan off and see if it might solve the problem. If it still persists, it could be because your AC filter needs to be cleaned or replaced, or you might have a short circuit in the thermostat, or even a completely damaged one. If all of this doesn’t work, your AC could have trouble shutting down because it’s too old and overworked. 


Now that you know all the common problems you might encounter with your AC, you will know what to expect this summer and how to fix it. If you’re getting a new AC, the most important thing to do is to ensure a high-quality installation process because one mistake or wrong move can shorten its lifespan. The best way to avoid any of these problems and ensure a long-lasting AC unit is through regular maintenance and inspection.