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A refrigerant leak in the air conditioning unit indicates that sooner or later it will eventually not make cold air (during air conditioning) nor heat air (during heating up when it's also a heat pump).  First of all we must have an exact analysis on the air conditioner trouble. If the air cooling or heat pump device has dropped cooling system (or heating) capability, there might be different causes other than losing the refrigerant in your system.

A refrigerant leak in the air conditioning unit indicates that sooner or later it will eventually not make cold air (during air conditioning) nor heat air (during heating up when it's also a heat pump). First of all we must have an exact analysis on the air conditioner trouble. If the air cooling or heat pump device has dropped cooling system (or heating) capability, there might be different causes other than losing the refrigerant in your system.