Whether you need a routine maintenance check or an emergency repair on a heating or air conditioning unit, CMG Heating & Air, LLC is available to handle all of your heating, cooling, and ventilation needs. Experienced in service and installation of all major brands of HVAC equipment gives us the advantage over other companies. We continually strive to exceed expectations by ensuring that each client receives the very best service at a great price. CMG Heating and Air, LLC in Holly Springs, Cary, Apex, and Raleigh area. Servicing gas, electric, and heat pump furnaces.