Comfort Zone of the Carolinas provides 24 hour emergency service and heating and AC repair for residential HVAC systems to our neighbors in the Tri-County area. We’ve served Rock Hill, Fort Mill, Lake Wylie, Clover, Lancaster, Chester, Indian Land, York, and Great Falls for a combined total of 40 years! Our service techs will arrive at your home on time and will leave the place just as clean as when they arrived. While there, your residential HVAC repair tech will expertly diagnose your problem and provide you with a quote using our flat rate pricing system.