WindTunnel™ technology:
For maximum cleaning effectiveness, Hoover engineered breakthrough WindTunnel vacuum technology with an innovative duct system inside the agitator cavity. Once dirt has been picked up by the brush roll, the ducts help prevent the dirt from being redistributed onto the carpet.
Allergen filtration:
Hoover WindTunnel vacuums have an allergen filtration system that captures 100 percent of dust mites and 99.98 percent of ragweed and common grass pollen.
Even vacuum bags make a difference. A vacuum bag should be designed to trap fine particles and keep dust mites and dirt from reaching the air. Hoover's allergen filtration bags perform two-stage filtration, capturing fine particles and returning filtered clean air to the room.