Torn between BU3521UK and Pro Performance Pet 3-in-1 VL50 T513002 for your next cordless vacuum?

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We examine the BU3521UK – a battery-power vacuum by Shark, comparing runtime, dust tank, and costs, with – Pro Performance Pet 3-in-1 VL50 T513002 by Tower, analysing real-world vacuuming performance.
By assessing these vacuums – the BU3521UK and Pro Performance Pet 3-in-1 VL50 T513002 from SHARK and TOWER, you get the best floorcare machine.
Best Cordless Vacuum Pick
Best Buy: Shark PowerPro Cordless Stick Vacuum
Best cordless vacuum – Shark PowerPro – beating BU3521UK and Pro Performance Pet 3-in-1 VL50 T513002 on performance and value
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Get DealSHARK BU3521UK vs TOWER Pro Performance Pet 3-in-1 VL50 T513002 – key Specifications
SHARK BU3521UK Specs

- Product Brand: SHARK
- Cordless Vacuum Model: BU3521UK
- Type of Vacuum: Stick
- Battery Life: 40 Minutes
- Dirt Tank Capacity: 0.42L
- Weight: 2.7KG
- Colour: Navy Blue & White
- RRP: £349.99
TOWER Pro Performance Pet 3-in-1 VL50 T513002 Specs

- Product Brand: TOWER
- Cordless Vacuum Model: Pro Performance Pet 3-in-1 VL50 T513002
- Type of Vacuum: Stick
- Battery Life: 45 Minutes
- Dirt Tank Capacity: 1L
- Weight: 1.3KG
- Colour: Purple & Grey
- RRP: £125.00
BU3521UK and Pro Performance Pet 3-in-1 VL50 T513002 Cordless Battery Run Time
SHARK Stick cordless vacuums, like the BU3521UK, provides lightweight portability without mains cables. Pro Performance Pet 3-in-1 VL50 T513002 Stick is also cordlessly powered by a TOWER rechargeable battery.
The Tower Pro Performance Pet 3-in-1 VL50 T513002 has a battery supply runtime of 45 minutes of cleaning, compared to the Shark BU3521UK which has 40 minutes life.
- SHARK BU3521UK Runtime: 40 mins continuous vacuuming
- TOWER Pro Performance Pet 3-in-1 VL50 T513002 Runtime: 45 mins continuous vacuuming
Charging times between the BU3521UK and Pro Performance Pet 3-in-1 VL50 T513002 varies – check manual.
Cordless Vacuum Dust Tank Capacity
Both Shark BU3521UK and Tower Pro Performance Pet 3-in-1 VL50 T513002 are bagless, storing dust, hairs, dirt, and debris inside a sealed 0.42 litre and 1 litre tank, respectively. The Pro Performance Pet 3-in-1 VL50 T513002 by TOWER holds up to 1 Litre of compressed dirty particles. The BU3521UK by SHARK has a capable capacity of 0.42 litre for manual disposable.
- BU3521UK onboard dirt/dust tank size: 0.42L
- Pro Performance Pet 3-in-1 VL50 T513002 onboard dirt/dust tank size: 1L
Floor Cleaning Types
Shark’s BU3521UK and Tower’s Pro Performance Pet 3-in-1 VL50 T513002 brush heads are effective on every surface – carpets & deep-pile rugs, hard floors (laminate, wood, tiles), vinyl, even upholstery, and stairs.
Their only limitation is the Pro Performance Pet 3-in-1 VL50 T513002 and BU3521UK can’t vacuum liquids. For this, a TOWER or SHARK ‘wet and dry’ vacuum is needed.
Most Shark and Tower battery powered vacuums include accessories. Check BU3521UK or Pro Performance Pet 3-in-1 VL50 T513002 manual for specifications and attachments.
Vacuum Filtration
The Pro Performance Pet 3-in-1 VL50 T513002 and SHARK BU3521UK include effective filters to capture dust, dander, pollen, hairs, and fibres.
SHARK and TOWER use HEPA, foam, or cloth, filters. BU3521UK and Pro Performance Pet 3-in-1 VL50 T513002 maintain suction and clean exhaust air.
TOWER and SHARK Reviews
Combined feedback from 128 reviewers shows the BU3521UK with a rating of 4.4/5 stars, and the Pro Performance Pet 3-in-1 VL50 T513002 vacuum gains a 3.8/5 average from 24 reviews, showing comparable reliability results.
| Brand | Model | Runtime | Weight | Tank | Best Price |
| SHARK | BU3521UK | 40 M | 2.7 | 0.42L | £349.99 |
| TOWER | Pro Performance Pet 3-in-1 VL50 T513002 | 45 M | 1.3 | 1L | £125.00 |
Best Buy: Shark PowerPro Cordless Stick Vacuum
Best cordless vacuum – Shark PowerPro – beating BU3521UK and Pro Performance Pet 3-in-1 VL50 T513002 on performance and value
Limited Offer
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