Gen5detect Absolute vs BU3521UK Cordless Vacuums

Torn between Gen5detect Absolute and BU3521UK for your next cordless vacuum?

We examine the Gen5detect Absolute – a battery-power vacuum by Dyson, comparing runtime, dust tank, and costs, with – BU3521UK by Shark, analysing real-world vacuuming performance.

By assessing these vacuums – the Gen5detect Absolute and BU3521UK from DYSON and SHARK, you get the best floorcare machine.

Best Cordless Vacuum Pick

DYSON Gen5detect Absolute vs SHARK BU3521UK – key Specifications

Gen5detect Absolute and BU3521UK Cordless Battery Run Time

DYSON Stick cordless vacuums, like the Gen5detect Absolute, 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 Dyson Gen5detect Absolute which has 70 minutes life.

• DYSON Gen5detect Absolute Runtime: 70 mins continuous vacuuming
• SHARK BU3521UK Runtime: 40 mins continuous vacuuming

Charging times between the Gen5detect Absolute and BU3521UK varies – check manual.

Cordless Vacuum Dust Tank Capacity

Both Dyson Gen5detect Absolute and Shark BU3521UK are bagless, storing dust, hairs, dirt, and debris inside a sealed 0.77 litre and 0.42 litre tank, respectively. The BU3521UK by SHARK holds up to 0.42 Litre of compressed dirty particles. The Gen5detect Absolute by DYSON has a capable capacity of 0.77 litre for manual disposable.

• Gen5detect Absolute onboard dirt/dust tank size: 0.77L
• BU3521UK onboard dirt/dust tank size: 0.42L

Floor Cleaning Types

Dyson’s Gen5detect Absolute 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 Gen5detect Absolute can’t vacuum liquids. For this, a SHARK or DYSON ‘wet and dry’ vacuum is needed.

Most Dyson and Shark battery powered vacuums include accessories. Check Gen5detect Absolute or BU3521UK manual for specifications and attachments.

Vacuum Filtration

The BU3521UK and DYSON Gen5detect Absolute include effective filters to capture dust, dander, pollen, hairs, and fibres.

DYSON and SHARK use HEPA, foam, or cloth, filters. Gen5detect Absolute and BU3521UK maintain suction and clean exhaust air.

SHARK and DYSON Reviews

Combined feedback from 82 reviewers shows the Gen5detect Absolute 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
DYSON	Gen5detect Absolute	70 M	3.5	0.77L	£549.00
SHARK	BU3521UK	40 M	2.7	0.42L	£349.99