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Product Highlights
- Wall Mountable: No
- Hygienic Bin Emptying: No
- Dirt Indicator: No
- Run Time (Min): 40
Product Overview
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
- 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?
Clean Your Home Without the Hassle
Get through your weekly cleaning routine faster and with less effort, thanks to cordless freedom that lets you tackle every room without hunting for power points or wrestling with tangled cords.
You'll breeze through your entire home on a single charge, with 40 minutes of consistent power that's more than enough for most houses. No more stopping mid-clean to recharge or switching between different tools – just grab it and go from carpets to hard floors, stairs to car interiors. The cordless design means you can quickly spot-clean spills, reach under furniture easily, and clean those awkward spaces like stairs and corners without any fuss. When you're done, simply pop it back in place – no winding up cords or finding storage space.
This vacuum fits seamlessly into busy households where you need cleaning to be quick and straightforward. It's light enough for anyone to use comfortably, and the decent runtime means you won't be caught short halfway through the job. Perfect for regular maintenance cleaning that keeps your home looking fresh without the drama.
Buy This If…
- You want to clean your whole home without plugging and unplugging cords
- You need something light and easy for quick daily clean-ups
- You're tired of lugging a heavy vacuum up and down stairs
- You want reliable runtime that won't leave you stranded mid-clean
- You prefer simple, no-fuss cleaning tools that just work





