Shark Clean & Empty Cordless (BU3521) vs Shark PowerDetect Clean & Empty (IP3251)

The short verdict

PowerDetect Clean & Empty (IP3251) is scored, the other is pending

We haven’t scored the Clean & Empty Cordless (BU3521) yet. Compare the measured differences and prices below.

Clean & Empty Cordless (BU3521)

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PowerDetect Clean & Empty (IP3251)

8.3

Choose the Clean & Empty Cordless (BU3521) if

Docked convenience at a lower tier

Full specs →

Choose the PowerDetect Clean & Empty (IP3251) if

Pet owners who hate emptying bins

Full specs →

At a glance

Key differences

Measured differences only. Ties and tiny gaps are left out.

Full specs

Side-by-side specifications

Battery & charging1 difference

Runtime Min

40 min

70 min

Design4 differences

Depth Mm

14.33 in (36.4 cm)

18.5 in (47 cm)

Height Mm

28.86 in (73.3 cm)

46.46 in (118 cm)

Weight with dock

7.55 kg

8.38 kg

Width Mm

10.35 in (26.3 cm)

10.24 in (26 cm)

General2 differences

Cleaning path

10.39 in (26.4 cm)

10.2 in (25.9 cm)

Power W

240 W

380 W

Where to buy

Specs verified against manufacturer data. Prices in USD before tax; we may earn a commission from qualifying purchases.

Community

Which would you buy?

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Clean & Empty Cordless (BU3521) vs PowerDetect Clean & Empty (IP3251)

PowerDetect Clean & Empty (IP3251) is scored, the other is pending

Key differences

Side-by-side specifications

Which would you buy?