Torn between BU3521UK and VL30 Plus T513003 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 – VL30 Plus T513003 by Tower, analysing real-world vacuuming performance.
By assessing these vacuums – the BU3521UK and VL30 Plus T513003 from SHARK and TOWER, you get the best floorcare machine.
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Best Buy: Shark PowerPro Cordless Stick Vacuum
Best cordless vacuum – Shark PowerPro – beating BU3521UK and VL30 Plus T513003 on performance and value
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Get DealSHARK BU3521UK vs TOWER VL30 Plus T513003 – 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 VL30 Plus T513003 Specs

- Product Brand: TOWER
- Cordless Vacuum Model: VL30 Plus T513003
- Type of Vacuum: Stick
- Battery Life: 35 Minutes
- Dirt Tank Capacity: 1L
- Weight: 1.3KG
- Colour: Rose Gold
- RRP: £83.99
BU3521UK and VL30 Plus T513003 Cordless Battery Run Time
SHARK Stick cordless vacuums, like the BU3521UK, provides lightweight portability without mains cables. VL30 Plus T513003 Stick is also cordlessly powered by a TOWER rechargeable battery.
The Tower VL30 Plus T513003 has a battery supply runtime of 35 minutes of cleaning, compared to the Shark BU3521UK which has 40 minutes life.
- SHARK BU3521UK Runtime: 40 mins continuous vacuuming
- TOWER VL30 Plus T513003 Runtime: 35 mins continuous vacuuming
Charging times between the BU3521UK and VL30 Plus T513003 varies – check manual.
Cordless Vacuum Dust Tank Capacity
Both Shark BU3521UK and Tower VL30 Plus T513003 are bagless, storing dust, hairs, dirt, and debris inside a sealed 0.42 litre and 1 litre tank, respectively. The VL30 Plus T513003 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
- VL30 Plus T513003 onboard dirt/dust tank size: 1L
Floor Cleaning Types
Shark’s BU3521UK and Tower’s VL30 Plus T513003 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 VL30 Plus T513003 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 VL30 Plus T513003 manual for specifications and attachments.
Vacuum Filtration
The VL30 Plus T513003 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 VL30 Plus T513003 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 VL30 Plus T513003 vacuum gains a 4.5/5 average from 69 reviews, showing comparable reliability results.
| Brand | Model | Runtime | Weight | Tank | Best Price |
| SHARK | BU3521UK | 40 M | 2.7 | 0.42L | £349.99 |
| TOWER | VL30 Plus T513003 | 35 M | 1.3 | 1L | £83.99 |
Best Buy: Shark PowerPro Cordless Stick Vacuum
Best cordless vacuum – Shark PowerPro – beating BU3521UK and VL30 Plus T513003 on performance and value
Limited Offer
Get Deal