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Product Highlights
- Wall Mountable: No
- Hygienic Bin Emptying: No
- Dirt Indicator: No
- Run Time (Min): 40
Shark® Clean & Empty™, BU3521

Meet the new Shark® Clean & Empty Cordless Stick Vacuum & Auto-Empty System. Clean & Empty features a redesigned 1.3L auto-empty base and a lightweight stick vacuum. With the auto-empty system, cleaning convenience is optimised; Always Ready, Always Charged, Always Empty & ready for the next clean. The redesigned base holds up to 30-days1 of dust & debris, so you can forget about emptying for up to a month and leave behind the trips to the rubbish bin after every use. Inside the base, fine dust and debris get sealed away after every clean, leaving them out of the air you breathe—500x less dust exposure2.
Clean & Empty has up to 40 minutes of runtime with nozzle technology to auto-adjust to floor type, optimising brushroll speed for deep carpet cleaning. The PowerFins® multi-surface brushroll gives you continuous cleaning contact to dig deep into carpets & directly engage hard floors with self-cleaning brushroll technology allowing for no hair wrap.
Key Features:
ALWAYS READY, ALWAYS CHARGED
Automatically empties and charges while docked, so it's ready for the next clean. No more manual emptying after every clean.
LIGHTWEIGHT MANEUVERABILITY
The redesigned cordless vacuum, with the powerful performance.
HYPERVELOCITY SUCTION
Accelerated suction power allows for powerful debris pickup on carpets & floors.
HEPA FILTRATION AND ANTI-ALLERGEN COMPLETE SEAL
Captures and traps over 99.97%4 of dust and allergens.
1 Based on ASTMF608, Eco vs. Boost.
2 Based on third-party plume testing while emptying vs. manual empty.
3 In ECO mode, measured at the hand vacuum.
4 Based on ASTMF1977, down to .3 microns.
Specifications
Global
- EAN: 0622356305600
- Model Number: BU3521
- Vacuum Cleaner Type: Handstick Vacuums
General
- Colour: Navy, White
Features
- Cyclonic: No
- Dirt Indicator: No
- Hygienic Bin Emptying: No
- LCD Display: No
- LED Lights: Yes
- Swivel Steering: No
- Telescopic Wand: No
- Wall Mountable: No
- Wet Vacuum: No
Design
- Vacuum Floor Type: Hard Floor
Battery
- Run Time (Min): 40
Filter Information
- Filtration : HEPA
Dimensions
- Depth: 140mm
- Height: 1100mm
- Width: 265mm
In The Box & Warranty
- Included: 1x Shark® Clean & Empty™, 1x 8” Duster Crevice Tool, 1x Pet Multi Tool, 1x Auto Empty Charging Dock
- Warranty (Years): 2
Why Buy?
Self-emptying convenience that keeps your vacuum ready to go
The Shark Clean & Empty BU3521 handles the messiest part of vacuuming for you, automatically emptying itself into a sealed base that holds up to 30 days of dust and debris. You'll skip the daily ritual of emptying the dustbin and breathing in clouds of dust every time you clean.
Your cleaning routine becomes genuinely effortless with 40 minutes of runtime and powerful suction that adjusts automatically between carpet and hard floors. The lightweight design lets you glide from room to room, while the self-cleaning brushroll means you'll never have to cut tangled hair free again. The HEPA filtration system traps over 99.97% of allergens, keeping your home's air cleaner as you vacuum.
This system fits perfectly into busy homes where you want cleaning to happen seamlessly in the background. It charges automatically when docked, stays ready for spontaneous clean-ups, and the compact base won't dominate your storage space. The reduced dust exposure makes it ideal for households with allergies or anyone who dislikes the messy aftermath of traditional vacuum emptying.
Buy this if…
- You want to vacuum without the hassle of constant dustbin emptying
- Your household needs quick, convenient daily cleaning
- You suffer from allergies or dust sensitivity
- You clean multiple floor types throughout your home
- You value a vacuum that maintains itself and stays ready to use





