There could be several reasons a vacuum cleaner loses its suction. Beyond a full bag or canister, lack of suction might be caused by a blocked pipe or hose. This can be checked using a flashlight and coat hanger or broomstick.
It's also a good idea to check the beater head and remove entangled hair or string. Also, be sure the vacuum is set correctly for the surface you're cleaning.
Next, make sure all the couplings are airtight, from the end attachments to the main body as well as inside the unit where dust gets sucked and stored. Without a proper seal, grit could get misdirected into the motorized section, potentially causing damage. This area should also have a clean, protective filter.
Finally, keep the exhaust clear for optimum suction. By following these basic tips, you can prolong the life and effectiveness of your current vacuum.
Check Your Vacuum Cleaner For Maximum Performance
