Vacuum Losing Suction — How to Fix It
When a vacuum stops picking up, it's rarely broken — airflow is blocked somewhere. On bagless vacuums (Dyson, Shark, etc.) the culprits are predictable and quick to fix.
1. Empty the Bin and Check It's Not Overfull
An overfull dust bin (or a full bag) kills suction. Empty it when it reaches the max line, not when it's completely packed. Fine dust packed around the cyclone also chokes airflow.
2. Wash or Replace the Filters
This is the #1 suction killer. Bagless vacuums have one or more filters (often a foam pre-filter and a HEPA post-filter) that clog with fine dust. Many are washable — rinse them, let them dry completely (24 hours), and reinstall. Dirty filters are the most common reason a Dyson or Shark loses suction.
3. Clear Clogs in the Hose and Wand
Hair, socks, and debris clog the hose, wand, and the path to the bin. Detach the hose and look through it (or feed something soft through) to find blockages. Check the inlet behind the brush roll too.
4. Clean the Brush Roll
Hair and string wrap around the brush roll and around its bearings, stopping it from spinning and reducing pickup. Cut away the wrapped hair with scissors and check the brush roll spins freely. Also check for blockages at the floor-head inlet.
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FAQ
Almost always a full bin, dirty/clogged filters, or a clog in the hose or brush roll. Empty the bin, wash the filters (and let them fully dry), and clear any blockages. Dirty filters are the top cause.
Usually clogged filters (wash and dry them 24 hours), a full bin, a hose clog, or hair wrapped around the brush bar. Work through those and suction returns.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.