Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System, Self Cleaning Brushroll, HEPA Filtration, Anti-Allergen Complete Seal, BU3521 White/Peacock
Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System, Self Cleaning Brushroll, HEPA Filtration, Anti-Allergen Complete Seal, BU3521 White/Peacock
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Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System, Self Cleaning Brushroll, HEPA Filtration, Anti-Allergen Complete Seal, BU3521 White/Peacock

73 ratings

Key item features

  • Automated Emptying System: Automatically empties collected debris into the base upon docking, ensuring a dust-free experience and reducing fine dust exposure by up to 500x.
  • Lightweight Versatile Design: The redesigned vacuum is 30% lighter than Shark Vertex Pro and easily converts into a removable handvac for versatile floor and above-floor cleaning.
  • Extended Cleaning Power: Provides up to 40 minutes of runtime in ECO mode, allowing for comprehensive home cleaning without frequent recharging.
  • Advanced Allergen Filtration: Features HEPA filtration and an Anti-Allergen Complete Seal system, capturing over 99.97% of dust and allergens down to 0.3 microns.
  • Adaptive Floor Cleaning: Utilizes an auto-adjusting MultiSurface brushroll with Powerfins® for optimized deep carpet cleaning and hard floor engagement, featuring self-cleaning technology.
  • Smart Operational Modes: Includes a quiet mode for silent charging with delayed emptying, LED headlights to reveal hidden debris, and Hypervelocity suction for powerful pickup.
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About this item

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Customer ratings & reviews

3.7 out of 5 stars
stars
73 ratings61 reviews
How item rating is calculated
  1. 5 stars52% (38)
  2. 4 stars10% (7)
  3. 3 stars10% (7)
  4. 2 stars11% (8)
  5. 1 star18% (13)

Reviews summary

Pros

  • : Has a low weight for easy maneuverability.
  • : The base collects debris and reduces dust in the air.
  • : The cleaner automatically adjusts and cleans hardwood and carpet.
  • : Features an automatic emptying mechanism for efficient use.

Neutral

  • : Device picks up pet hair but underperforms on carpet and handheld.

Cons

  • : Device runtime is shorter than advertised and capacity drops.
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Showing 1-3 of 61 reviews

Sep 24, 2026
Reviewer name: Deku
5 out of 5 stars
5 out of 5 stars review

Love the Shark stick vacuum

Love the Shart stock vacuum. It is lightweight. Easy to empty and has excellent suction.

Review from sharkninja.com
Helpful?2PU0D2EM0J0E17189306909
Sep 12, 2026
Reviewer name: Lightie
5 out of 5 stars
5 out of 5 stars review

Unique vacuum!

I love how lightweight this vacuum is and how well it picks up.

Review from sharkninja.com
Helpful?2PU0D2EM0J0E17189306909
Sep 8, 2026
Reviewer name: Arixoxo
5 out of 5 stars
5 out of 5 stars review

Best purchase ever!

I love my vacuum it makes my life easier no more killing my back sweeping the floor with a broom 🧹

Review from sharkninja.com
Helpful?2PU0D2EM0J0E17189306909
Current price is Now $279.99
You save $120.00
was $399.99
Price when purchased online
  • Free shipping
  • Free Holiday returns until Jan 31
$279.99
$169.95
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Sold by Shark Ninja Store
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4.647690655209452 out of 5 stars
4.6 stars out of 5, based on 931 seller reviews(4.6)
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