HVAC Repair & Services Since 1947 | Carolina Air Conditioning, Carolina Air Conditioning Co. in Raleigh & Durham heating and air, NC are HVAC Repair and Services experts! 24/7 support for heating & air conditioning repair, maintenance, & installation. Heating Repair, Replacement, Maintenance, Air Conditioning Inspection, or Installation, TRANE specialists, NATE certified, A+ BBB.