R20 VTV97A vs BU3521UK Cordless Vacuums

Torn between R20 VTV97A and BU3521UK for your next cordless vacuum?

We examine the R20 VTV97A – a battery-power vacuum by Dreame, comparing runtime, dust tank, and costs, with – BU3521UK by Shark, analysing real-world vacuuming performance.

By assessing these vacuums – the R20 VTV97A and BU3521UK from DREAME and SHARK, you get the best floorcare machine.

Best Cordless Vacuum Pick

DREAME R20 VTV97A vs SHARK BU3521UK – key Specifications

R20 VTV97A and BU3521UK Cordless Battery Run Time

DREAME Stick cordless vacuums, like the R20 VTV97A, provides lightweight portability without mains cables. BU3521UK Stick is also cordlessly powered by a SHARK rechargeable battery.

The Shark BU3521UK has a battery supply runtime of 40 minutes of cleaning, compared to the Dreame R20 VTV97A which has 90 minutes life.

• DREAME R20 VTV97A Runtime: 90 mins continuous vacuuming
• SHARK BU3521UK Runtime: 40 mins continuous vacuuming

Charging times between the R20 VTV97A and BU3521UK varies – check manual.

Cordless Vacuum Dust Tank Capacity

Both Dreame R20 VTV97A and Shark BU3521UK are bagless, storing dust, hairs, dirt, and debris inside a sealed 0.6 litre and 0.42 litre tank, respectively. The BU3521UK by SHARK holds up to 0.42 Litre of compressed dirty particles. The R20 VTV97A by DREAME has a capable capacity of 0.6 litre for manual disposable.

• R20 VTV97A onboard dirt/dust tank size: 0.6L
• BU3521UK onboard dirt/dust tank size: 0.42L

Floor Cleaning Types

Dreame’s R20 VTV97A and Shark’s BU3521UK 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 BU3521UK and R20 VTV97A can’t vacuum liquids. For this, a SHARK or DREAME ‘wet and dry’ vacuum is needed.

Most Dreame and Shark battery powered vacuums include accessories. Check R20 VTV97A or BU3521UK manual for specifications and attachments.

Vacuum Filtration

The BU3521UK and DREAME R20 VTV97A include effective filters to capture dust, dander, pollen, hairs, and fibres.

DREAME and SHARK use HEPA, foam, or cloth, filters. R20 VTV97A and BU3521UK maintain suction and clean exhaust air.

SHARK and DREAME Reviews

Combined feedback from 12 reviewers shows the R20 VTV97A with a rating of 4.6/5 stars, and the BU3521UK vacuum gains a 4.4/5 average from 128 reviews, showing comparable reliability results.

Brand	Model	Runtime	Weight	Tank	Best Price
DREAME	R20 VTV97A	90 M	1.76	0.6L	£239.00
SHARK	BU3521UK	40 M	2.7	0.42L	£349.99