Cleaning thick carpet isn’t easy. There needs to be just enough suction to pull up particles that have settled deep within those long, luxurious fibers, without making the floorhead impossible to push. Too much suction and you’ll get stuck; too little and there won’t be much cleaning happening.
I recently ran a big group test to find the best cordless vacuum on the market, and as part of that I ran several suction tests on thick carpet. The model that scored the highest marks for cleaning deep-pile carpet was the Shark PowerDetect Cordless.
How did I test?
To test how well each vacuum performed on deep-pile carpet, I sprinkled dry tea (representing fine particles), a dry rice and lentil mix (representing chunky particles), and dog hair clippings (representing, well, dog hair) onto a large sample of thick carpet, rubbing each mixture into the fibers. I then vacuumed over the mess with the various models, using Auto mode if the vacuum had one, or the medium suction setting if it didn’t.
I assessed how effectively the vacuum cleared each spillage – both at surface level and deeper down in the carpet fibers. I also assessed how easy it was to push the vacuum over the carpet, and the extent to which the floorhead pinged or pooled the particles about, rather than sucking them up.
The PowerDetect Cordless scored a perfect 5/5 in my chunky particle test, clearing everything in a single forward pass in Auto mode. It was equally effective with pet hair (in fact, this is the best vacuum for pet hair that I’ve tested, in general).
For fine particles the score was a little lower (4/5), because I could still see a fine dusting of tea within the carpet fibers after a forward pass. However, that was the equal-highest score that any vacuum in my group test achieved here – the reality is that it’s just super tricky to effectively clean fine particles from deep-pile carpet.
Why is this vacuum so good for thick carpet?
In my opinion, the success of the PowerDetect cordless is down to a combination of outright power, an Auto mode that copes superbly when clearing mess off thick carpet, and a well-designed floorhead. The vacuum clearly comes packing plenty of suction – the PowerDetect came top or joint-top in all my cleaning tests, which covered mid-pile carpet, hard flooring, and further pet-hair trials.
The suction level of this model is designed to amp up and down depending on the floor type and how dirty it is, and I could hear the power shifting as I moved the floorhead over any mess. No matter the level of power it was exerting, the vacuum remained easy enough to push in Auto mode, never getting stuck down as a result of the suction.
Shark has also added a flap to the back edge that makes it more effective at sucking up particles when the floorhead is pulled backwards over them. While this feature really shines on hard flooring, it also seemed to help when cleaning thick carpet – there was some pooling (as you can see in the video above), but nowhere close to the levels that some competitor models created. I also found that the wheels appeared to help agitate the carpet fibers.
The runners up…
If the Shark PowerDetect doesn’t look quite right for you, these were there runners up in my deep-pile carpet tests.
The Gen5detect packs so much power that I had to drop down into Eco mode, and open the air intake slider on the floorhead, to make it possible to push over thick carpet. Otherwise, the cleaning performance on deep carpet was excellent.
Read our full Dyson Gen5detect review
The V8 Cyclone scored a solid 4/5 in all my deep-pile carpet tests. It’s far from the fanciest vacuum here – for starters, there’s no automatic suction adjustment – but when it comes to outright power, this model is very effective. Currently, it isn’t available in the US.
Read our full Dyson V8 Cyclone review
The Dreame R20 was a bit of a surprise: it didn’t score that highly on mid-pile carpet, but was excellent at clearing particles large and small on deep-pile carpet. Its pet hair pickup was a little weaker than the other models listed here, though.
Read our full Dreame R20 review
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