POWERDETECT Upright Vacuum Cleaner with HEPA Filter, Heavy Duty Vacuum with Powerful Suction for Pet Hair Pickup, DuoClean Technology, Powered Lift-Away, Ideal for Carpets Hardfloors, AZ4002 BEST OVERALL CLEANING OF ANY VACUUM*: Most powerful suction** and most advanced cleaning technology of any vacuum.****Based on a geomean of combined tests -IEC62885-2 Sec 5.3 FWD, IEC62885-2 Sec 5.3 REV, IEC62885-2 Sec 5.5 FWD, IEC62885 Sec 5.5 REV vs. upright market. **Based on ASTM F558, measured at the hose. ***Based on the number of features that autonomously alter cleaning performance. DUOCLEAN DETECT: Two-brushroll system with four Intelli-Sense sensors automatically senses and reacts to hidden dirt, debris and pet hair and boosts suction and brushroll speed for optimal performance on both carpets and hardfloors. DIRT DETECT: Intelli-Sense sensor detects hidden dirt, debris, and pet hair embedded deep inside carpets, and devours it by automatically boosting cleaning power, allowing you to focus only on the areas that need attention. EDGE DETECT: Automatically increases suction power within 2 inches of an edge or wall, for maximum cleaning performance along edges and corners, even from under baseboards, eliminating the need for extra attachments or a broom and dustpan. FLOOR DETECT: The Intelli-Sense ultra-sonic sensor detects what floor type it��s on, and the POWERDETECT reacts by automatically adapting its suction and brushroll speed, for optimal performance on ALL surfaces, including hardfloors and carpets. DIRECTION DETECT: ��s direction Intelli-Sense sensor recognizes which direction you are vacuuming, and automatically directs powerful suction to whatever direction is needed, for maximum cleaning in both forward AND reverse, to save you time. NO HAIR WRAP: The self-cleaning brushroll delivers powerful pet hair pickup without wrapping hair. GUARDS AGAINST BAD ODORS: Odor Neutralizer Technology guards against bad odors inside your vacuum for a fresh-smelling home. ANTI-ALLERGEN COMPLETE SEAL: Works with a HEPA filter to trap 99.99% of dust and allergens inside the vacuum, keeping them out of the air you breathe. (Based on ASTM F1977 of particles 0.3 microns or larger. Allergens refers to non-living matter.)