The Karcher BV 11/1 backpack vacuum is ergonomically designed, making it comfortable to wear and easy to use. The power switch is mounted on the hip within easy view and reach of the operator. A chest strap ensures better weight distribution and operator comfort. A swivel hose connection is integral to the design for both left-hand and right-hand operators. Included vacuum attachments stow conveniently on the harness for easy accessibility. In addition, the quiet operation of the BV 11/1 allows for daytime cleaning. The ten quart filter bag provides extra volume for additional productivity. To ensure ultimate air quality, the vacuum is designed with four-stage vacuum filtration. A powerful 1.7 hp vacuum motor powers the BV 11/1 back-pack vacuum's rugged construction and simple design for increased durability.