Remote controlled vehicle for threading a string through HVAC ducts

The invention is a remote controlled vehicle adapted for navigating inside HVAC supply trunks. It is equipped with a moveable camera and a powered tool for snagging a string or parachute propelled into the trunk by other methods. A command box is provided to view the image from the camera and control the vehicle's various functions. The installation technician inserts the vehicle into the trunk through an access hole and uses the command box to navigate the vehicle inside a HVAC trunk and locate and secure the string to the vehicle. The technician then controls the vehicle to pull the string back to the access or the technician manually pulls the vehicle back to the access by its tether.