I've tested a bunch of Shark vacuums and they all have the same problem

Sort it out, Shark

01 Jan 2026, 09:00 · TechRadar

Opinion By Ruth Hamilton published 1 January 2026

(Image credit: Future) Share Share by:

Share this article 0 Join the conversation Follow us Add us as a preferred source on Google

Let's get one thing clear before we start: Shark makes some great vacuums. But having tested a number of different models from this brand, I've noticed they all fail in one specific way. It was especially clear in a recent group test to find the best cordless vacuum, in which I compared options from a range of brands side-by-side.

Here it is: user-friendliness. And in particular, how the brand conveys information to the user. It might seem like a small thing, but it can be ultra-frustrating, and I suspect it means some people aren't getting the best from their appliance, simply because it's not clear how to use it properly.

Take, for example, the Shark PowerDetect Cordless. It's a stellar cleaner, smashing through all my suction trials in the group test and earning the highest overall score in this area. But making sense of it is a nightmare.

A riddle wrapped up in a mystery

Upon switching the PowerDetect Cordless on, a selection of different icons flashes up on the screen. The Eco and Boost symbols are easily discernible, and having used a number of hi-tech vacuums, it was clear to me that the target symbol represented some kind of Auto mode.

But a fourth symbol also appears: a water droplet. I've never seen this appear in use, and scoured the product manual for clues as to what it might mean, but it's not mentioned anywhere (it's absent from "Instructions for use" and "Error codes"). I've also emailed Shark directly for help, and so far they're as baffled as I am. To this day, I don't know what it means or why it's there.

(Image credit: Future)

To add insult to injury, Shark insists on having each icon flash up individually on screen every time you switch the vacuum on. This mini-display becomes tedious quite quickly, and especially because it's accompanied by a second or two's pause before the power actually kicks in. Shark's vacuums are the only vacuums I've tested that have this delay, and it's frustrating if you just want to do a quick clean.

In its Auto mode, the vacuum will sense dirt on the floor and boost or lower suction in response, to clean it efficiently without wasting battery. To illustrate this, Shark has also added a color-changing ring to the outside of the screen. The colors it has chosen are white for clean (although Shark insists it's actually blue, but let's not quibble on that) and purple for dirty – not the most intuitive, and hard to distinguish between, too.

Get daily insight, inspiration and deals in your inbox

Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors