HVAC systems typically include a combination of components that work together to provide heating, ventilation, and air conditioning. These components typically include a furnace, air handler, evaporator coil, condenser coil, blower, and thermostat. The furnace is responsible for heating the air, while the air handler is responsible for circulating the air throughout the home. The evaporator coil and condenser coil are responsible for cooling the air, while the blower is responsible for pushing the air through the system. Finally, the thermostat is responsible for controlling the temperature of the air. All of these components work together to provide a comfortable environment in your home.