Shark Clean & Empty Cordless (BU3521) vs Shark PowerDetect Speed (IA1241)

The short verdict

Scores pending

We haven’t scored these yet. Use the measured differences and full specs below.

Clean & Empty Cordless (BU3521)

—

PowerDetect Speed (IA1241)

—

Choose the Clean & Empty Cordless (BU3521) if

Docked convenience at a lower tier

Full specs →

Choose the PowerDetect Speed (IA1241) if

Shoppers who want Shark sensors at lower weight

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

60 min

Design3 differences

Depth Mm

14.33 in (36.4 cm)

13.78 in (35 cm)

Height Mm

28.86 in (73.3 cm)

44.09 in (112 cm)

Width Mm

10.35 in (26.3 cm)

10.24 in (26 cm)

General2 differences

Cleaning path

10.39 in (26.4 cm)

8.31 in (21.1 cm)

Power W

240 W

350 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?

One vote per person. Results appear after you vote.

Clean & Empty Cordless (BU3521) vs PowerDetect Speed (IA1241)

Scores pending

Key differences

Side-by-side specifications

Which would you buy?