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✨ Clean smarter, live fresher — the future of cordless vacuuming is here!
The Shark Clean & Empty BU3521 is a lightweight, cordless stick vacuum featuring a 40-minute runtime, an auto-empty system that seals away dust, and a HEPA filter capturing 99.97% of allergens. Designed for effortless multi-surface cleaning, it combines powerful suction with ergonomic design and a 5-year warranty, making it a top-tier choice for busy professionals seeking a spotless, allergen-free home.










| ASIN | B0D15YWYMD |
| Amperage | 25 Amps |
| Battery Charge Time | 5 Hours |
| Battery Description | Lithium-Ion |
| Battery Life | 40 minutes |
| Best Sellers Rank | #29,691 in Kitchen ( See Top 100 in Kitchen ) #118 in Stick Vacuums & Electric Brooms |
| Brand | Shark |
| Brand Name | Shark |
| Capacity | 1.3 Liters |
| Color | White |
| Control Method | Touch |
| Controller Type | Push Button |
| Country of Publication | China |
| Customer Reviews | 4.1 out of 5 stars 867 Reviews |
| Filter Type | HEPA Filter |
| Filter type | HEPA Filter |
| Finish Types | Polished |
| Form Factor | Stick |
| Global Trade Identification Number | 10622356647462 |
| Included Components | Charging Dock |
| Indoor Outdoor Usage | Indoor |
| Is Product Cordless | Yes |
| Item Dimensions L x W x H | 36.4L x 26.3W x 73.3H centimeters |
| Item Type Name | Clean & Empty – Lightweight Cordless Vacuum Cleaner with HEPA Filter, Powerful Suction, Portable, Rechargeable, Auto-Empty System, Stick Vacuum for Pet Hair, Carpets & Hardfloor, White BU3521 |
| Item Weight | 5.1 kg |
| Manufacture Year | 2024 |
| Manufacturer | SharkNinja |
| Manufacturer Warranty Description | 5 Years Warranty |
| Model Name | Clean & Empty |
| Model Number | BU3521 |
| Motor Horsepower | 0.32 horsepower |
| Number of Handles | 1 |
| Number of Items | 1 |
| Number of Power Levels | 2 |
| Other Special Features of the Product | Cordless, HEPA, High Precision Sensors, Lightweight, Spotless Cleaning |
| Portable | Yes |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Recommended Uses For Product | carpeted floors, hardwood floors, pet hair removal |
| Runtime | 40 minutes |
| Special features | Cordless, HEPA, High Precision Sensors, Lightweight, Spotless Cleaning |
| Style Name | Auto-Empty Stick Cordless Vacuum Cleaner |
| Surface Recommendation | All floors |
| Surface recommendation | All floors |
| UPC | 622356647465 622356309783 |
| Unit Count | 1.0 Count |
| Voltage | 120 Volts |
| Wattage | 180 watts |
A**A
Great cordless vacuum!
I am very happy with my recent purchase! It's incredibly light and easy to use. I particularly appreciate how it automatically adjusts its power based on whether I'm cleaning a floor or carpet. What I love most is the stand station. It's so convenient not having to fix it to the wall, and the auto-cleaning feature is a fantastic bonus. Beyond these features, the 5-year warranty speaks volumes about the quality of this product. I absolutely recommend it!
A**S
Should have purchased this long ago.
Should have purchased this long ago. Really happy with the options. The self cleaning or dust extraction is really a game changer.Wow.
J**A
Don’t waste your time and money
As a user of proper vacuum cleaners I was skeptical about cordless vacuum cleaners. Unfortunately my experience proved true. As soon as I got it I tried to vacuum a strand of hair and wouldn’t come. I felt like I am holding a fan not a vacuum. I tried vacuuming the tiles, I had to go over the piece of crumble four times to pick it up. Then I tried to vacuum my carpet, the vacuum showed red light and shut off and the battery which was full became zero. This is a toy not a vacuum.
B**A
Auto clean not working after 2 months
The auto clean stop working after 2 months :(
H**Y
Love it.
Great for a small 1 or 2 bed place. Feels solid in the hand, powerful enough on light rugs and tiled/wooden floors. I love the self clearning function. My only niggle, I wish the base station had space for the 2 extra heads you get.
Trustpilot
3 weeks ago
5 days ago