Shark
Shark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSB
A solid mid-range vacuum cleaner for a busy household, leading with 40 min.
57/100
40 minCordless
£300best price at Amazon
In stock at 1 retailer
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Why we rate it
- Cordless
- Anti-tangle brush
- Pet hair tool
- No removable / swappable battery
- Below-average runtime
Score profile
Scored against the vacuum cleaners classWhere the Shark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSB wins and loses
Full specification
Grouped · supported features marked in blueSpecifications
Type
Vacuum typeCordless
CordlessYes
Battery (cordless)
Runtime40
Brushes and tools
Anti-tangle brushYes
Pet hair toolYes
Filtration
HEPA filterYes
Design and dustbin
Weight2.7 kg
Dustbin capacity0.42
More specs
BaglessYes
Head to head
Highlighted cell = better in that rowShark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSB vs Vax Vax Blade 4 Pet Cordless Stick Vacuum Cleaner
Shark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSBVax Blade 4 Pet Cordless Stick Vacuum Cleaner
| SharkShark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSBThis page | VaxVax Blade 4 Pet Cordless Stick Vacuum Cleaner | |
|---|---|---|
| Overall score | 57 /100Better | 54 /100 |
| Runtime min | 40 | 45Better |
| Motor | — | 275 W |
| Type | Cordless | Cordless |
| Dustbin l | 0.42 | 0.6Better |
Who it's for
Is the Shark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSB right for you?
Buy it if
Buyers on a budget
Anyone who needs a dependable vacuum cleaner for the essentials without overspending.
Skip it if
Skip it if
You need removable / swappable battery, in which case a higher-tier vacuum cleaner is the better call.
Daily user
Runs it most days and wants it to just work.
okay
Busy household
Needs capacity and speed for a full home.
good
Budget buyer
Wants the essentials done well for less.
okay
Common questions
Before you buy
Is the Shark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSB worth it?
It depends on what you need. It scores 57/100 against other vacuum cleaners, a solid mid-range result where the class average is around 55.
What stands out on the Shark Clean & Empty Cordless Vacuum Cleaner BU3521UKTSB?
Its cordless stands out, a genuinely useful feature if your setup calls for it.
How does it compare to the Dyson V10 Konical Cordless Vacuum?
The Dyson V10 Konical Cordless Vacuum scores 58/100 versus this one at 57/100, so it is the step up on the spec sheet.
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