Comfort Zone of the Carolinas Located in Rock Hill, SC, Comfort Zone of the Carolinas is an HVAC repair company providing residential and commercial heating and air services throughout Fort Mill, Rock Hill, Clover, and surrounding areas. Our services include HVAC repair and replacement, new construction HVAC system installation, geothermal heat pump installation & service, and commercial leasing. Comfort Zone of the Carolinas Doesn’t let the unpredictable weather conditions in the Carolinas get the best of you! Our technicians help you get the most out of your heating and air system, through all seasons. Whether you need an emergency AC repair in the dead heat of summer or a completely new furnace installation in the winter cold, we’re available to assist. Our contractors are experienced, reliable, and professional, with a reputation for excellent customer service.