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Is your air conditioner running but not cooling your space? Let’s see the main reasons why this happens. There are many causes that can make an AC run but fail to cool properly. First, check if the unit was working properly before, or if it’s a newly installed system. For older units, a very common cause is dirty filters. If maintenance hasn’t been done in over six months, airflow is restricted and cooling suffers. Another frequent problem is low refrigerant. A sign is the evaporator coil fr