When a vacuum cleaner loses suction, the cause is usually a full bin, a blocked filter or a tangled brush bar, all of which you can fix yourself in minutes. Regular maintenance keeps floorcare appliances working at their best.

Always unplug first

Switch off and unplug corded vacuums, or remove the battery from cordless models, before cleaning any part.

Bins and bags

• Bagless: empty the bin when it reaches the max line, not when it is packed full. Emptying it outside reduces dust indoors.
• Bagged: change the bag when the indicator shows or when it is about two thirds full. Suction drops noticeably as bags fill.

Filters

Most vacuums have at least one washable filter. Check your manual, then rinse washable filters in cold water only, with no detergent, and leave them to dry for a full 24 hours before refitting. A damp filter can damage the motor and cause smells. Non-washable filters should be tapped clean and replaced as recommended.

Brush bars

Hair and thread wrap around brush bars and stop them spinning properly. Remove the bar if possible and cut through wrapped hair with scissors along the groove. Check for blockages where the brush head meets the wand.

Hoses and wands

If suction is weak even with a clean filter and empty bin, look for a blockage in the hose or wand. Drop a coin through the wand to check it is clear.

Cordless vacuum batteries

Store cordless vacuums at room temperature, avoid leaving them completely flat for long periods, and use the manufacturer's charger. Batteries lose capacity over the years and can usually be replaced.

Robot vacuums

Empty the bin after each run, clean the sensors and charging contacts with a dry cloth, and untangle the side brushes and main roller weekly.

Steam mops

Wash the pads after every use, and use distilled or filtered water if you live in a hard-water area to prevent limescale building up inside.

When cleaning does not fix it

If the motor smells hot, cuts out, or suction is still poor, there may be a fault. Our appliance repair service repairs vacuum cleaners and Dyson machines. For more on choosing a new model, see our floorcare technology guide.