We clean all your ducts in the supply and return system, from the registers down to the furnace. A temporary filter is installed and we run an air pressurized snake into the ducts to loosen any debris build-up. By using 200Ibs of compressed air, we blow all the dust and debris down to a vacuum access above your furnace and our 1100 CFM vacuum sucks the dust out of your ducts and into our dolly mounted vacuum.