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The Shark Clean & Empty BU3521 is a lightweight, cordless stick vacuum featuring a 40-minute runtime, an innovative auto-empty system that seals away dust, and a HEPA filter capturing 99.97% of allergens. Designed for multi-surface cleaning including pet hair, carpets, and hard floors, it combines powerful suction with ergonomic ease and a 5-year warranty, making it a top-tier choice for modern, health-conscious homes.










| ASIN | B0D15YWYMD |
| Amperage | 25 Amps |
| Battery Charge Time | 5 Hours |
| Battery Description | Lithium-Ion |
| Battery Life | 40 minutes |
| Best Sellers Rank | #499 in Kitchen ( See Top 100 in Kitchen ) #7 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 | 4.2 out of 5 stars 8,730 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 | 37.3L x 26.5W x 110.5H 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 | 11.24 Pounds |
| 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 | 3 |
| 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 Count |
| Voltage | 120 Volts |
| Wattage | 180 watts |
R**E
One of the Best Wireless Vacuums You Can Buy
If you’re considering a wireless vacuum cleaner, this is hands down one of the best investments you can make. It delivers powerful performance, especially on carpets, picking up dirt impressively well. The battery life is long enough for practical, everyday cleaning, and the whole unit is lightweight and easy to maneuver. What really stands out is the thoughtful design and ergonomic build — everything feels intuitive and well-balanced. Based on my experience so far, it’s a purchase I feel confident about and would recommend to others.
K**D
10/10
Absolutely amazing vacuum, light weight in comparison to traditional vacuum. Slow to charge, but charge lasts quite awhile. Daily use in small one bedroom apartment, charge lasts about two weeks. Great attachments, easy to disassemble for cleaning purposes, great suction.
T**H
good quality
The Vacuum cleaners did good job on daily cleaning work. For my flat which is only 369 sqft, it can completely the work in one-time full charge. However, if I want to do extra cleaning, then I need to charge it again. All about this vacuum is good, except the battery is kind insufficient. But if you live alone or having a small apartment then this is the most affordable and valuable vacuum cleaner I recommend.
A**Y
Great performance!
Love it! I bought second already for my second apartment. Works great! It's my 3rd Shark Vacuum cleaner, and eac new vacuum cleaner is better, better and better. Light, great suction power, removes my animals fur easily. If you find it on sale, buy it! You won't regret
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.
L**D
good
Good product
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.
L**G
Box opened on arrival
Product is as described however the box was in a terrible condition on arrival and it was also opened and not sealed on arrival.
Trustpilot
1 month ago
2 days ago