As I understand your air conditioner needs a serious clean. That is a typical case. It could be challenging to do by yourself. I have tried once to clean the cabin filter. The most challenging was to find the filter. Finding the filter, you have to decide if you replace it with a new one or clean it. Depends on your money, man. However, I would highly recommend changing it. The most tricky part is to wipe the fan blades. Of course, I removed the air conditioning condenser, and I couldn't put it back together. My lesson was to call professionals. It doesn't matter if it costs a little bit expensive. The last time I called
https://www.airconservicingsingapore.com/ they have done my three-hour work in half an hour.
