Clean the dustbin and filters after every use

The dustbin fills faster with pet hair than with regular dust, so empty it after each cleaning session—even if it does not look full. Pet hair compacts and blocks airflow, which cuts suction and makes the motor work harder. Tap the dustbin over a trash can to loosen the hair, then wipe the inside with a dry cloth.

The filters trap the finest particles and pet dander. Most Shark pet models have a foam pre-filter and a HEPA filter. Tap both gently over the trash to shake out loose debris, then hold them up to a light—if you cannot see through them, they need washing. Rinse them under cool running water (never hot), let them air-dry completely for at least 4 hours before reinstalling, and replace them every 3 to 6 months depending on how often you vacuum.

Key Takeaways

  • Empty the dustbin after every use and rinse the filters monthly to keep suction strong and prevent motor strain.
  • The brush roll tangles with pet hair and needs clearing every 1 to 2 weeks; use scissors to cut wrapped hair away from the bristles.
  • Check the air pathway—the tube connecting the dustbin to the motor—for clogs that block airflow even when the bin is empty.
  • Replace filters every 3 to 6 months and the brush roll every 12 months, or sooner if bristles wear flat or the motor sounds strained.
  • Store the vacuum upright in a dry place and charge it fully before long storage to keep the battery healthy.

Clear the brush roll of tangled hair weekly

Pet hair wraps around the brush roll faster than any other debris. When hair tangles around the bristles, the roll cannot spin freely, suction drops, and the motor overheats. Check the brush roll every 1 to 2 weeks by flipping the vacuum over and looking at the bottom. If you see hair wrapped around the bristles, turn off the vacuum and unplug it.

Use scissors or a seam ripper to cut the hair away from the bristles—cut parallel to the roll, not across it, so you do not nick the bristles themselves. Work slowly and pull away the cut hair as you go. Once the roll spins freely by hand, you are done. If the bristles look matted or flattened, the roll is wearing out and should be replaced.

Check the air pathway for blockages

Pet hair can clog the tube that runs from the dustbin to the motor, even when the bin is empty. If suction drops suddenly but the filters are clean and the brush roll is clear, a blockage in the pathway is the likely cause. Detach the dustbin and look up into the opening where it connects to the main unit—shine a flashlight and look for hair or debris packed inside the tube.

If you see a clog, use a straightened wire coat hanger or a plumbing snake to push it out gently. Do not force it or poke too hard, as you can damage the tube. Once cleared, reattach the dustbin and test the suction. If suction is still weak, the motor intake screen (located where the tube meets the motor) may also be blocked—remove it and rinse it under cool water.

Replace filters and the brush roll on schedule

Filters wear out and lose their ability to trap fine particles, which reduces suction and forces the motor to work harder. Most Shark pet models need new filters every 3 to 6 months with regular pet hair use. Order replacement filters by your vacuum model number (printed on the dustbin or in your manual) and keep a spare on hand so you are not without a vacuum while waiting for delivery.

The brush roll typically lasts 12 months with heavy pet hair use, though it may wear faster if you vacuum over hard floors with pet hair daily. When bristles flatten or the roll no longer spins freely even after you clear the hair, replacement is due. Brush rolls are inexpensive and take 2 minutes to swap out—most models have a release button or clip on the bottom plate.

Clean the dustbin opening and seals

Pet hair and dust accumulate around the rim where the dustbin locks into the main unit, blocking the seal and reducing suction. After emptying the bin, wipe the rubber seal with a damp cloth and check that it is not cracked or warped. If the seal is damaged, suction will never be strong again, and you will need to order a replacement dustbin.

Also wipe the opening on the main unit where the dustbin connects. Hair and dust buildup here prevents a tight seal. Use a dry cloth or a soft brush to clear the opening, then reattach the dustbin firmly until you hear or feel it click into place.

Store and charge the battery correctly

Cordless vacuums last longer when stored upright in a dry place, away from heat and direct sunlight. Before storing for more than a few weeks, charge the battery fully. Lithium-ion batteries (used in most Shark models) hold their charge better when stored at full capacity than when left partially drained.

If you store the vacuum for a month or longer, charge it fully every 3 to 4 weeks to keep the battery healthy. Never leave the battery completely drained for extended periods, as this can shorten its lifespan. If the vacuum will not hold a charge after a year or two of regular use, the battery has reached the end of its life and should be replaced.

Troubleshoot weak suction before calling for repair

Weak suction usually means one of three things: the dustbin is full or the seal is broken, the filters are clogged, or the brush roll or air pathway is blocked. Work through these checks in order. Empty the dustbin, rinse the filters, clear the brush roll, and check the tube for clogs. If suction is still weak after all four steps, the motor intake screen may be blocked—remove and rinse it.

If suction remains weak after these steps and the vacuum is less than 2 years old, the motor or battery may be failing and you should contact Shark customer service. If the vacuum is older and the motor sounds strained or the battery no longer holds a charge, repair may cost more than replacement.

Frequently Asked Questions

Can I wash the filters in hot water?

No. Hot water can damage the filter material and warp the frame. Use cool running water only, and let the filters air-dry completely before putting them back in the vacuum. Reinstalling damp filters can damage the motor.

How do I know if the brush roll needs replacing?

If the bristles look matted or flattened instead of standing upright, or if the roll no longer spins freely after you clear the hair, it is time to replace it. A worn brush roll cannot pick up pet hair effectively, even with strong suction.

Why does my vacuum smell like burning when I use it?

A burning smell usually means the motor is overheating because airflow is blocked. Check the dustbin, filters, brush roll, and air pathway for clogs. If the vacuum still smells hot after clearing all blockages, turn it off and let it cool for 30 minutes, then contact Shark support—the motor may be failing.

Can I use the vacuum on wet pet accidents?

No. Cordless vacuums are not designed for wet pickup. Moisture can damage the motor and battery. For wet spots, blot with towels first, let the area dry, then vacuum. If liquid enters the motor, the vacuum may be permanently damaged.

How often should I replace the entire dustbin?

The dustbin itself lasts for years if the seal is not cracked and you empty it regularly. You only need a new dustbin if the rubber seal tears, cracks, or warps, which prevents a tight fit and kills suction. Check the seal every few months during cleaning.