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Customer Ratings & Reviews

Your price for this item is $329.99
The comparable value price is $399.99

Customer reviews

Rating 4.6 out of 5 stars with 196 reviews

Rating Filter

Rating by feature

  • Cleaning Quality

    Rating 4.7 out of 5 stars

  • Maneuverability

    Rating 4.8 out of 5 stars

  • Ease of Assembly

    Rating 4.8 out of 5 stars

Pros mentioned filter

Cons mentioned filter

93%would recommend to a friend

Customers are saying

Customers highly value the lightweight design, powerful suction, and long battery life of this cordless stick vacuum. The auto-empty feature and HEPA filtration are also frequently praised, while some users mention the dustbin could be larger. Many appreciate the ease of use and the helpful LED lights.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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Page 1 Showing 1-6 of 6 reviews
  • Rated 3 out of 5 stars

    Fills a need, but not as good as other shark vaxxu

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Pros: Light weight: about 6 lbs. Stand weighs 6 also Easy to use and assemble Can use accessory for counter cleanup Good for small space Cons: It won’t pick up large onion papery onion peel It won’t be as effective when vacuuming downstroke

    I would recommend this to a friend
    • Brand response from SharkNinja Product Expert
      Posted .

      Hello,
      Thank you for taking the time to leave a review on your cordless vacuum.
      We will absolutely share your feedback with the relevant teams for consideration on future products. If you need any help with your product, please don't hesitate to reach out to our team by phone at 1-855-427-5127.
      Kind regards,
      Shark Clean

  • Pros mentioned:
    Ease of use, Weight

    Rated 3 out of 5 stars

    Shark Stick Vacuum

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Battery life is much shorter then they say when using it on carpet. It is light weight and easy to use. Great for light cleaning.

    I would recommend this to a friend
    • Brand response from SharkNinja Product Expert
      Posted .

      Hello,
      Thank you for taking the time to leave a review.
      We're so sorry to hear that the battery runtime has disappointed you on your BU3521. We will absolutely share your feedback with the relevant teams for consideration on future products. If you need any help with your product, please don't hesitate to reach out to our team by phone at 1-855-427-5127.
      Kind regards,
      Shark Clean

  • Rated 3 out of 5 stars

    Its okay

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I think its okay. Could be better . Wish it can pick up m&ms or something lol

    No, I would not recommend this to a friend
    • Brand response from SharkNinja Product Expert
      Posted .

      Hello,
      Thank you for taking the time to leave a review.
      We're so sorry to hear that you wish it could pick up M&M'S. We will absolutely share your feedback with the relevant teams for consideration on future products. Nevertheless, if you consider there's low suction, please don't hesitate to reach out to our team by phone at 1-855-427-5127, so we can help with it.
      Kind regards,
      Shark Clean

  • Rated 3 out of 5 stars

    Very nice but bad battery

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very nice vacuum, light but battery life is less than 30 mins, which can not finish not even a floor. Hopefully it's a faulty one, will contact CS to see what BB can do for me, but if not I'll give 5 stars

    I would recommend this to a friend
    • Brand response from SharkNinja Product Expert
      Posted .

      Hi Ginux,

      Thank you for sharing your experience with the Shark Clean & Empty Cordless Stick Vacuum. We’re happy to hear that you like the vacuum’s design and performance, but we understand your concern about the battery life.

      While runtime can vary based on the power mode and surface type, you should be getting enough time to complete a full cleaning session. We recommend ensuring the vacuum is fully charged before use and checking that it’s not running on Boost mode continuously, as that can drain the battery faster.

      Since you’re already planning to reach out to Best Buy, we hope they can assist you, but if you need any support from us, please don’t hesitate to contact our team at 1-855-427-5127. We’d love to help troubleshoot and ensure you get the best performance from your Shark vacuum.

      Kind regards,
      Shark Clean

  • Rated 3 out of 5 stars

    Vacumm

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Don't pick that easy stuff gets stuck and when turn off it comes back. Won't stay down keep locking up.

    No, I would not recommend this to a friend
    • Brand response from SharkNinja Product Expert
      Posted .

      Hello Mayra,

      Thanks for sharing your review.

      We're sorry to know that your Shark Stick Vacuum is turning off and won't stay down. We understand how disappointing this can be. Please reach out to our team by phone at 1-855-427-5127; we'd be happy to help you get this sorted.

      Kind regards,
      Shark Clean

  • Pros mentioned:
    Weight
    Tech Insider Network Member

    Rated 3 out of 5 stars

    Great With A Few Dropped Balls

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    Tech Insider Network Member
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is odd for me. Normally Shark makes nothing but five star products but I dinged this one two stars for a couple of issues I find unforgivable. Don't get me wrong here, this is an excellent cordless vacuum cleaner minus a couple of issues that just stick in my craw. First the good. It's cordless and not very heavy which is a win in my book. It's very maneuverable in tight spaces and the included crevice tool makes cleaning corners and where the floor meets the wall a god send. The way it handles long dog hair by some voodoo magic of keeping to rollers clear of such obstacles is wonderful. The fact that it self empties every time you place it on the charging stand is very handy indeed. It transitions be between carpet and hardwood with ease. Basically it's a Shark and does its core function of cleaning very well, Now, the not so good. This vacuum is loud. Very loud. I have used several cordless stick. vacuums before including a few from Shark. This is the loudest by far. By a long margin. Like I can't hear someone next to me talk in nothing short of a near yell. Next is that there is nowhere on the base to put the included accessories. This means there is the opportunity to loose said accessories. Big boo on Shark for this oversight. Lastly there is a tendency for the vacuum to overheat. I was cleaning a medium sized living room in a home with two long haired dogs and after about twenty minutes the vacuum shut down and displayed a warning that the unit was over heating and needed to shut down. After ten minutes I was able to finish up the room, It has only happened the one time and it might have been a one off situation but it is enough to make me concerned it may happen again. Like I said minus the few issues it's an otherwise outstanding cordless vacuum.

    No, I would not recommend this to a friend
    • Brand response from SharkNinja Product Expert
      Posted .

      Hello,
      Thank you for taking the time to leave a review.
      We will absolutely share your feedback with the relevant teams for consideration on future products. If you need any help with your product, please don't hesitate to reach out to our team by phone at 1-855-427-5127.
      Kind regards,
      Shark Clean