E20 3-in-1 vs BU3521UK Cordless Vacuums

Torn between E20 3-in-1 and BU3521UK for your next cordless vacuum?

We examine the E20 3-in-1 – a battery-power vacuum by Eufy, comparing runtime, dust tank, and costs, with – BU3521UK by Shark, analysing real-world vacuuming performance.

By assessing these vacuums – the E20 3-in-1 and BU3521UK from EUFY and SHARK, you get the best floorcare machine.

Best Cordless Vacuum Pick

EUFY E20 3-in-1 vs SHARK BU3521UK – key Specifications

E20 3-in-1 and BU3521UK Cordless Battery Run Time

EUFY Handheld cordless vacuums, like the E20 3-in-1, 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 Eufy E20 3-in-1 which has 180 minutes life.

• EUFY E20 3-in-1 Runtime: 180 mins continuous vacuuming
• SHARK BU3521UK Runtime: 40 mins continuous vacuuming

Charging times between the E20 3-in-1 and BU3521UK varies – check manual.

Cordless Vacuum Dust Tank Capacity

Both Eufy E20 3-in-1 and Shark BU3521UK are bagless, storing dust, hairs, dirt, and debris inside a sealed 3 litre and 0.42 litre tank, respectively. The BU3521UK by SHARK holds up to 0.42 Litre of compressed dirty particles. The E20 3-in-1 by EUFY has a capable capacity of 3 litre for manual disposable.

• E20 3-in-1 onboard dirt/dust tank size: 3L
• BU3521UK onboard dirt/dust tank size: 0.42L

Floor Cleaning Types

Eufy’s E20 3-in-1 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 E20 3-in-1 can’t vacuum liquids. For this, a SHARK or EUFY ‘wet and dry’ vacuum is needed.

Most Eufy and Shark battery powered vacuums include accessories. Check E20 3-in-1 or BU3521UK manual for specifications and attachments.

Vacuum Filtration

The BU3521UK and EUFY E20 3-in-1 include effective filters to capture dust, dander, pollen, hairs, and fibres.

EUFY and SHARK use HEPA, foam, or cloth, filters. E20 3-in-1 and BU3521UK maintain suction and clean exhaust air.

SHARK and EUFY Reviews

Combined feedback from 26 reviewers shows the E20 3-in-1 with a rating of 4.7/5 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
EUFY	E20 3-in-1	180 M	8.37	3L	£279.00
SHARK	BU3521UK	40 M	2.7	0.42L	£349.99