Ross & Witmer offer a complete array of heating and air conditioning services and products for commercial and residential customers in the Charlotte, NC area. We offer a variety heating and air conditioning services designed to provide exceptional value and dependability over the life of the equipment. Other Services: • Electrical • Geothermal Systems • Air Sealing and Insulation • Attic, Crawlspace, and Basement Encapsulation 24 HourEmergency Service