A vacuum cleaner that smells musty or has weak suction usually just needs cleaning. Clogged filters, full canisters, and hair-wrapped brush rolls are the three most common causes of reduced performance — all are easy to address.
Canister or Dustbin
- Empty the canister or replace the bag before it reaches maximum capacity — a full container reduces suction noticeably
- For bagless vacuums: empty after every use or when it's half full
- Rinse the canister with warm water if it has accumulated fine dust — allow to dry completely (12–24 hours) before reinserting
Filters
Most modern vacuums have multiple filters:
- Locate all filters — refer to the manual if unsure; there is typically a pre-motor filter and a post-motor/HEPA filter
- Tap each filter gently over a bin to knock out loose dust
- Check if the filter is labeled as washable — if so, rinse under cool running water until it runs clear (no soap)
- Allow to dry completely — at least 24 hours — before reinstalling; a damp filter installed in the vacuum can cause mould and damage the motor
- Non-washable HEPA filters should be replaced every 6–12 months, or whenever suction doesn't improve after cleaning other parts
Brush Roll (Beater Bar)
Hair and string wrapped around the brush roll is the number one cause of a vacuum that pushes dirt rather than picking it up:
- Remove the brush roll — most models have a release latch or one or two screws holding the bottom plate
- Use scissors to cut through the wound hair, then pull it off in sections
- Use a seam ripper or small comb to remove finer debris from the bristles
- Wipe the brush roll and brush chamber with a damp cloth
- Reinstall and test — brush should spin freely
Hose
- Detach the hose and check for blockages — shine a flashlight through one end to verify it's clear
- For a clog, insert a broom handle through the hose to push the obstruction out
- Wipe the inside of the hose with a damp cloth attached to a rope if it has accumulated debris