By design, many conventional vacuum cleaners scatter dirt back into the carpeting because the rotating brushes and airflow don't work in harmony. But Hoover engineers discovered a way to make the rotating brushes and airflow work in harmony with the power of the wind. It's called WindTunnel technology. Located in the floor nozzle, Hoover WindTunnel technology actually lifts and traps the dirt, so it won't scatter back into your carpet, which means the dirt ends up in the cleaner, not on your floor. The Self-Cleaning HEPA Filter cleans itself every 6 seconds to maintain cleaning power. You never have to touch or replace the main filter. It Traps 100% of dust mites, ragweed and common grass pollen under normal household conditions. Pet hair cleaning turbo hand tool / Upholstery tool / Dusting brush / Crevice tool Telescoping handle with built-in metal wand / 14-inch cleaning path / 6 foot super-stretch hose / Weight - 20 lbs. Manufacturer's US Warranty - 1 year parts, 90 days labor on defects in materials and workmanship