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  • Front. Shark - Clean & Empty, Cordless Stick Vacuum with 1.3L Auto-Empty System, HEPA, 40 Min Runtime - White.
  • The text on the image is grouped and corrected as follows: "Auto-Empty System: Automatically empties and disposes of debris - no more daily emptying. Up to 30 days of hands-free emptying with: * No dirt on your hands * No dust clouds * No cleaning in your home after you clean."
  • The text on the image reads: "Shark 30% lighter than Shark Vertex Pro."
  • The text on the image reads: "Auto-empty dock LOCKS AWAY over 99.97%* of dust & allergens" ANTI-ALLERGEN C COMPLETE SEAL DESIGNED TO LOCK AWAY DIRT, DUST, ALLERGENS, ODORS Based on ASTM F1977 of particles to 0.3 microns or larger. "Allergens refers to non-living matter."
  • Shark Removable Hand Vac is a lightweight above-floor cleaning device that detaches for easy use.
  • Up to 500x less dust exposure based on third-party plume testing while emptying vs. Shark Navigator upright manual empty (US/CA: NV130).
  • The text on the image reads: "POWERFINS Multi-surface cleaning Auto-adjusts brushroll speed depending on floor type."
  • "Always charged. Always ready. For up to 40 minutes of runtime. Powerfin in ECO mode, measured at the hand vacuum."
  • VS No Hair Wrap: Self-cleaning brushroll for no hair wrap.
  • Duster Crevice Tool Clean hard-to-reach areas.
  • The text on the image reads, "Pet Multi-Tool Removes pet hair and embedded dirt."
  • The text on the image is grouped and corrected as follows: "Hypervelocity: Accelerated Suction Power. Powerful suction on carpets & floors. Powerfins."
  • HAIR WRAP NO HAIR WRAP SELF-CLEANING BRUSHROLL PET HAIR LONG HAIR
  • Shark Clean & Empty Cordless Stick Vacuum Trailer video 1 minutes 00 seconds

Shark - Clean & Empty, Cordless Stick Vacuum with 1.3L Auto-Empty System, HEPA, 40 Min Runtime - White

Model:
BU3521
SKU:
6583331
Highly rated by customers for:
Your price for this item is $229.99
The comparable value price is $399.99

Customer reviews

Rating 4.5 out of 5 stars with 272 reviews

Rating Filter

Rating by feature

  • Cleaning Quality

    Rating 4.7 out of 5 stars

  • Maneuverability

    Rating 4.7 out of 5 stars

  • Ease of Assembly

    Rating 4.8 out of 5 stars

Pros mentioned filter

Cons mentioned filter

91%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.
Page 9 Showing 161-180 of 272 reviews
  • Pros mentioned:
    Battery life

    Great cordless vacuum

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    What a great vacuum! Battery life is great and the cleaning power is even better. Would not ask for a better cordless vacuum than this one.

    I would recommend this to a friend
  • Pros mentioned:
    Suction power

    Shark

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

    We enjoy this product very powerful and don’t take much space

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    suck it

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Nice futuristic vaccum for kids and adult easy to use.

    I would recommend this to a friend

  • Convenient!

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like the self emptying feature! It’s still new but so far I’m happy with it!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Weight

    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

  • Pros mentioned:
    Overall performance

    Good

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

    It's perfect for cleaning my house every day, I love it.

    I would recommend this to a friend
  • Pros mentioned:
    Weight

    Great sweeper

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

    This is a great sweeper I have all hard surface floors and it is so lightweight and easy to use. I really love that it empties itself.

    I would recommend this to a friend

  • Best purchase

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

    I love this vacuum! It works really good on carpet and tile/wood. Love the cordless

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Fantastic

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

    Great vacuum. Easy to use. The automatic bin works great and collects everything easily. Also it’s simple to empty.

    I would recommend this to a friend
  • Pros mentioned:
    Weight

    Vacuum

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

    I LOVE IT!! Its very light weight. There is no hassle with bags. Easy to clean

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Worth every penny

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

    Great product! Love how I can shorten the pole and make it a handheld vacuum

    I would recommend this to a friend

  • Impressive

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

    I’m extremely impressed with the performance of this vacuum. I have not had any clogs from pet hair and I love the feature of it automatically dumping into a canister versus having to dump it each time.

    I would recommend this to a friend
  • Pros mentioned:
    Suction power

    Awesome vacuum!

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

    Love it! Works great! Has great power on both carpet and hard floors

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Thumps up

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

    Wife Loves it a lot!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Super product

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

    This vacuum cleaner is great for picking up dirt and pet hair. It’s easy to use and maneuver. Leaves rooms looking clean.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Great quality

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

    I love this product, very easy to assemble and use, even my kids now love to vacuum their rooms.

    I would recommend this to a friend
  • Pros mentioned:
    Weight

    Amazing

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

    I love this vacuum, light weight, with lights self cleaning and easy to use. I recommend it 100 %

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Double battery pack electric vaccum that gets the

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

    Very powerful with 2 battery packsvthat are interchanageable you dont run out of powef

    I would recommend this to a friend

  • Shark

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    LOVEEEE my new shark vacuum and the fact that it cleans itself after every use!

    I would recommend this to a friend

  • Good choice!

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good choice! I like it but still doesn’t reach out as I wanted under furniture

    I would recommend this to a friend
Page 9, Showing 161-180 of 272 reviews
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