Call Charter Oak Mechanical for ductless heating & cooling Hebron CT. Ductless air conditioning systems link individual room units to an outdoor compressor. Units in individual rooms can be set individually. Each is linked to a single outdoor compressor. The individual units pull in warm air and send it back out as cold air. A popular alternative to traditional air conditioners, minisplits involve much less intrusive installation, blend in better with the room and are quieter and very energ