T20+ vs BU3521UK Cordless Vacuums

Torn between T20+ and BU3521UK for your next cordless vacuum?

We examine the T20+ – a battery-power vacuum by Airrobo, comparing runtime, dust tank, and costs, with – BU3521UK by Shark, analysing real-world vacuuming performance.

By assessing these vacuums – the T20+ and BU3521UK from AIRROBO and SHARK, you get the best floorcare machine.

Best Cordless Vacuum Pick

AIRROBO T20+ vs SHARK BU3521UK – key Specifications

T20+ and BU3521UK Cordless Battery Run Time

AIRROBO Robot cordless vacuums, like the T20+, 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 Airrobo T20+ which has 190 minutes life.

• AIRROBO T20+ Runtime: 190 mins continuous vacuuming
• SHARK BU3521UK Runtime: 40 mins continuous vacuuming

Charging times between the T20+ and BU3521UK varies – check manual.

Cordless Vacuum Dust Tank Capacity

Both Airrobo T20+ and Shark BU3521UK are bagless, storing dust, hairs, dirt, and debris inside a sealed 0.35 litre and 0.42 litre tank, respectively. The BU3521UK by SHARK holds up to 0.42 Litre of compressed dirty particles. The T20+ by AIRROBO has a capable capacity of 0.35 litre for manual disposable.

• T20+ onboard dirt/dust tank size: 0.35L
• BU3521UK onboard dirt/dust tank size: 0.42L

Floor Cleaning Types

Airrobo’s T20+ 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 T20+ can’t vacuum liquids. For this, a SHARK or AIRROBO ‘wet and dry’ vacuum is needed.

Most Airrobo and Shark battery powered vacuums include accessories. Check T20+ or BU3521UK manual for specifications and attachments.

Vacuum Filtration

The BU3521UK and AIRROBO T20+ include effective filters to capture dust, dander, pollen, hairs, and fibres.

AIRROBO and SHARK use HEPA, foam, or cloth, filters. T20+ and BU3521UK maintain suction and clean exhaust air.

SHARK and AIRROBO Reviews

Combined feedback from 47 reviewers shows the T20+ with a rating of 4.2/5 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
AIRROBO	T20+	190 M	3.8	0.35L	£339.99
SHARK	BU3521UK	40 M	2.7	0.42L	£349.99