| This Hoover Cleaning Performance System is for comparing the Relative Progressive Performance of Hoover uprights only and not for comparison with any other brands. The majority of this rating is based upon the American Society for Testing and Materials (ASTM) carpet cleaning effectiveness testing (ASTM Test F608). Other performance factors include hose power (ASTM Test F558), surface litter cleaning, hard floor cleaning, edge cleaning, cleaning width and air filtration. |