The HEPA (high efficiency particulate air) filter traps tiny particles, filtering dust, mites, and allergens from the air as you clean. It's ideal for alleviating asthma symptoms and allergy suffers. Miele's line of HEPA filtration vacuum cleaners begins with the S314 series. This line is manufactures from highly durable ABS plastic material, with a crush-proof hose, a two-piece stainless steel wand, and three tools that stow away conveniently below the lid. The S314 White Star is accessorized with a TurboBrush; and the S314 Red Star has a PowerBrush for medium-pile carpets. In addition to the Miele S3 series, this German company also manufactures S4 and S5 series HEPA filtration vacuum cleaners. The main S4 product line is the Miele a S4 Galaxy S4210 Capella series vacuum cleaner, with a 3.7-quart dust bag, a Super Air Clean filter, and the ElectroBrush and parquet floor tool. At the top end of the line, the Orion S4780 Galaxy series vacuum cleaner comes complete with the PowerBrush and parquet floor brush, making it sufficiently flexible to deep-clean pile carpeting, as well as polished hardwood floors. The standard model HEPA-filtration S-4 series vacuum cleaner comes with a crevice tool, upholstery brush, dusting brush, a replacement HEPA filter and two F/J/M fiber vacuum cleaner bags. The Miele Callisto deep black canister vacuum is the newest entry in the HEPA-equipped S5 series; this vacuum cleaner comes with a 4.76-quart fiber dust bag and a PowerBrush for medium pile carpets as well as a parquet floor brush.