Filters filter out all the impurities and dust to prevent the system from getting dirty or clogging up.
If you notice that your air conditioner is no longer doing a good job of cooling the room, it may that the filter is at fault.
If you have a reversible air con and the filter is worn out, your appliance will have trouble creating heat.
The filter must be cleaned regularly or replaced if it is too damaged.
Find and select the right filters for your air conditioner right here.