maximum run-time has dropped, or the machine displays a red light that flashes 12 times (or more), then the battery probably needs to be replaced..

If they are, then you’ll be able to run them under cold water to remove dirt and grime (make sure they dry for at least 24 hours before re-inserting them though!)If the filters aren’t washable, you may need to buy new ones..

Maintaining Your Vacuum Cleaner.We recommend emptying bagless vacuums after each cleaning session.While many cyclonic vacuums don’t lose suction as the canister fills up, emptying the vacuum prevents bacteria from growing in the collected debris.

Washable filters should be cleaned regularly.. We also recommend a full vacuum clean at least once per year, even if your vacuum seems to be functioning properly.This prevents many faults from developing and helps to ensure your vacuum doesn’t lose cleaning performance.. 4.

Motor Fault or Failure.

Finally, a burning smell may be caused by an issue with the vacuum’s motor.The lack of a docking station also means that you’ll need somewhere to store and charge the vacuum when it’s not in use.

As it’s a relatively large handheld, this makes it less convenient than some of the alternatives we’ve mentioned..: Some of the handheld vacuums we’ve reviewed have tools that are built into the vacuum, meaning that they are always easily available.

The Shark CH950UKT doesn’t have this feature, which is a shame (although understandable to prevent the vacuum from becoming too bulky).. VIEW PRICE.Shark HandVac CH950UKT Suction Power and Cleaning Performance.