Empty the dust cup after every use
The single most important step is emptying your Shark's dust cup before it gets full. Most Shark models have a full-cup indicator—a line or dot on the side of the cup—and you should empty it when you reach that mark, not when the cup is completely packed. A full cup reduces suction power significantly and makes the motor work harder than it needs to.
To empty the cup, locate the release button (usually on the handle or near the top of the unit) and press it to detach the cup from the main body. Hold it over a trash can and press the bottom-release latch to open the cup and let debris fall out. Tap the sides gently to dislodge stubborn dust. Do not squeeze or compress the cup—you want the dust to fall freely.
After emptying, look inside the cup for any clumps or debris stuck to the walls. A quick wipe with a dry cloth removes residue. Let the cup air-dry completely before reattaching it to the vacuum.
Key Takeaways
- Empty the dust cup at the fill line, not when it is completely full, to maintain suction power and protect the motor.
- Rinse the foam and felt filters with cool water every month and replace them every three to six months, depending on how often you vacuum.
- Check the brush roll weekly for hair and string wrapped around it, and clean it by hand or with scissors to prevent clogs and loss of suction.
- Inspect the intake port and hose for blockages monthly, as clogs in these areas are a common reason for sudden loss of suction.
- Store your Shark in a dry place and do not use it on wet surfaces or to pick up water, which can damage the motor and filters.
Rinse and replace the filters monthly
Shark vacuums use two types of filters: a foam pre-filter and a felt main filter. Both trap fine dust and allergens, and both need regular cleaning to keep suction strong. Check your model's manual to see where these filters are located—on most uprights and stick models, they are near the dust cup or on the side of the unit.
Once a month, remove both filters and rinse them under cool running water. Do not use hot water or soap, as these can damage the filter material. Gently squeeze water through the foam filter with your fingers; for the felt filter, hold it under the tap and let water run through it. Tap them against the sink to remove excess water, then stand them upright to air-dry completely before putting them back in the vacuum. Never reinstall a wet filter.
Replace the filters entirely every three to six months, depending on how often you vacuum and whether you have pets or allergies. Shark sells replacement filter kits for most models—check your model number on the bottom or back of the unit and order the correct set. Worn filters cannot be restored by rinsing alone and will eventually reduce suction no matter how clean you keep them.
Clean the brush roll and remove tangled hair
The brush roll (the spinning bristle bar at the bottom of the vacuum head) picks up hair, string, and fibers that wrap around it over time. This buildup reduces the brush's ability to agitate carpet and can slow the motor. Check the brush roll weekly if you have pets or long hair in your home.
Unplug the vacuum and flip it over or remove the vacuum head (depending on your model) to access the brush roll. Look for hair, string, or pet fur wrapped around the bristles. Use your fingers or a seam ripper to pull away loose tangles. For stubborn wrapping, use small scissors or a utility knife to carefully cut the fibers—cut parallel to the brush, not across it, so you do not damage the bristles themselves. Wipe the brush with a dry cloth when you are done.
If the brush bristles are bent, matted, or no longer spin freely, the brush roll itself needs replacement. Shark sells replacement brush rolls for each model. A worn brush roll will not restore suction even after cleaning.
Check the intake port and hose for blockages
Loss of suction often comes from a clog in the hose or intake port rather than a full dust cup. The intake port is the opening where air enters the main unit from the dust cup, and the hose (if your model has one) is the tube that connects the vacuum head to the main body.
Unplug the vacuum and detach the hose if your model has one. Hold it up to a light and look through it—you should see light on the other end. If you see a blockage, use a broom handle or straightened wire coat hanger to push the clog out gently. Do not force it; if it does not move easily, try pushing from the other end. For the intake port on the main unit, use a flashlight to look inside and remove any visible debris by hand or with a straightened wire.
Check these areas monthly, especially if you vacuum pet hair, long human hair, or fine dust like flour or powdered sugar. A clog can develop quickly and will make the vacuum feel weak even if the filters are clean.
Wipe down the exterior and check seals
Dust and debris accumulate on the outside of your Shark, especially around the dust cup, filters, and hose connections. Wipe the exterior with a dry or slightly damp cloth every few weeks to keep it clean and to spot any cracks or loose parts early.
Pay special attention to the seals where the dust cup connects to the main unit and where the hose attaches. These rubber or plastic seals keep air from leaking out of the system, which would reduce suction. If a seal looks cracked, dried out, or loose, it may need to be replaced. Check your manual or contact Shark customer service for the correct replacement seal for your model.
Store your Shark properly and avoid water damage
Store your vacuum in a dry place, away from moisture and extreme heat. Do not leave it in a damp basement or garage where humidity can damage the motor and filters. If you live in a very humid climate, store the vacuum with the dust cup removed so air can circulate inside.
Never use your Shark to pick up water, wet debris, or spills. The motor and electrical components are not waterproof, and water inside the unit can cause permanent damage or create a shock hazard. If you accidentally pick up water, unplug the vacuum when ready, remove the dust cup and filters, and let all parts air-dry for at least 24 hours before using the vacuum again. Do not plug it back in until you are certain everything is completely dry.
When to call Shark customer service
If your vacuum has lost suction even after you have emptied the dust cup, rinsed the filters, cleaned the brush roll, and checked for clogs, the problem may be inside the motor or fan housing. Shark customer service can walk you through additional troubleshooting steps or arrange a repair or replacement if your vacuum is still under warranty.
Most Shark vacuums come with a limited warranty that covers defects in materials and workmanship for one to five years, depending on the model. If your vacuum stops working or loses suction suddenly and you have followed all the cleaning steps above, contact Shark directly through their website or the phone number on your manual. Have your model number ready.
Frequently Asked Questions
Can I wash the filters in the dishwasher?
No. The dishwasher's heat and detergent will damage the foam and felt material. Always rinse filters by hand under cool running water only. Let them air-dry completely before reinstalling.
How do I know if my brush roll needs to be replaced?
If the bristles are bent, matted down, or no longer spin freely after you have removed all tangled hair, the brush roll needs replacement. A worn brush will not agitate carpet properly even after cleaning. Replacement brush rolls are inexpensive and take a few minutes to install.
Why does my vacuum still lose suction after I empty the cup and clean the filters?
Check the intake port and hose for blockages—these are the most common hidden cause of suction loss. Also inspect the seals where the dust cup and hose connect to make sure they are not cracked or loose. If everything looks clear and sealed, the problem may be inside the motor housing, and you should contact Shark customer service.
Is it safe to use my Shark on hardwood floors?
Yes, but turn off the brush roll if your model has a brush-roll on/off switch. The spinning brush can scratch hardwood. Most Shark models have a setting for hard floors that disables the brush roll while keeping suction active for picking up dust and debris.
What should I do if water gets inside my vacuum?
Unplug it when ready and do not use it again until it is completely dry. Remove the dust cup and filters and let all parts air-dry for at least 24 hours in a warm, dry place. Do not plug the vacuum back in until you are certain all moisture is gone, as water inside the motor can cause electrical damage.