Yes, it is possible to add zones to an existing HVAC (Heating, Ventilation, and Air Conditioning) system. Zoning systems allow homeowners to control the temperature and airflow in different areas of the house independently. This is achieved by installing dampers in the ductwork, which can be opened or closed as needed to direct air to specific zones. A professional HVAC contractor can evaluate the existing system and recommend the best zoning solution, which may involve installing a new thermostat and additional ductwork.