Hoover vacuum hepa filter
Filters clog with use. The manual lists how often to change it.
Hoover vacuum beater bar belt
Turns the brush roll. A brush that stops spinning points here.
Agitator
Drive parts wear out: a machine that fills but won't spin or agitate often points here.
Hoover vacuum hose handle assembly
Knobs and handles break with daily use.
1Hepa filterAH40010
2Bar belt59135309
3Agitator59135316
4Handle assembly59135334Part numbers come from the Sears PartsDirect parts list for the Hoover S3825 (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.