The technician will begin attaching the vacuum hose to the ductwork near your furnace, the technician inserts a Viper Microline—a small but powerful air whip with a single powerful tentacle—into each vent, one at a time. The Microline features nozzle holes that exert forward air pressure, and as the technician slowly feeds the Microline into the vent, its tentacle thrashes around and physically dislodges debris, while at the same time the nozzle blows that debris toward the furnace, where the vacuum devours it.
In most cases it is not necessary to remove the register covers, as the Microline slips in between the fins of the register and easily down into the ducts. If, because of the distance between the fins or because of the slant of the registers, the Microline cannot get through, the technician will remove your registers.
After creating negative air pressure throughout the duct system with the insertion of a powerful vacuum hose near your furnace, the technician services every vent in your home with a Viper Microline, which forces any debris down the branch lines and into the main trunk lines, where the Viper Clean Sweep System is later utilized to propel everything toward the vacuum. Every inch of the ductwork surface is contacted, as opposed to merely the surface downstairs.
Down near your furnace, the Viper Clean Sweep is inserted into the main supply and the main return. This Viper utilizes six 14-inch long tentacles that thrash vigorously in every direction inside the duct. Once this tool is engaged, the finer, lighter debris becomes airborne and is sucked into the vacuum, and as the whip is slowly pulled through the ductwork, the tentacles pull the heavier debris toward the vacuum, ensuring nothing is left behind.
To complete the process, the technician will clean your furnace. Normally sold as a separate service, furnace cleaning is included as part of the Ultimate Air Duct Cleaning. The majority of homes with dirty ductwork also have dirty furnaces, since the furnace essentially serves as the heart of the system.
It is generally recommended that the furnace filter be replaced after air duct cleaning, but if a new filter is not immediately available, the technician can clean your existing one with air pressure (outside your home, of course!) until a new one can be obtained, typically within a week. This will also give the furnace time to cycle through any residual dust that may remain in the system.
Want a simplified visual breakdown of the process? Click here.