Dyson's Discounts Have Started Early – If You're Fed Up With Your Bulky, Corded Vacuum, This Slim, $300-Off Dyson Leaves Floors Spotless in Seconds

Gone are the days where we had to rely on huge, bulky vacuum cleaners to keep our homes clean. Now, engineering wizards have designed motors that can fit inside slim cordless sticks, which are powerful enough to pull dirt from deep within our floors.

The best example of this is the Dyson V12 Detect Slim, which is discounted by an enormous $300 in Dyson's extended holiday sale. It's the lightest vacuum in Dyson's market-leading 'Detect' series, and can banish dust, dirt and hair from floors in seconds.

Dyson has kicked off the Black Friday sale season early, and with an offer this huge on one of our all-time best vacuums, we're in for a treat.

Powerful, slim, lightweight

Dyson V12 Detect Slim | was $729.99, now $429.99 at Dyson (save $300)

One of the lightest, yet most powerful cordless vacuums we've tested, that also reveals invisible dust and automatically adapts to your floor type.

Read more in my full Dyson V12 Detect Slim review.

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The Dyson V12 Detect Slim is as Powerful as The Big, Corded Vacuums

The Dyson V12 Detect Slim is the best lightweight vacuum we've ever reviewed. In many ways, this is what it was designed to be: A slimmer, lighter version of Dyson's best, the Dyson V15 Detect, with those same market-leading features packaged into a smaller cordless stick.

But don't be fooled that a slim vacuum can't clean like your bulky, corded one. I tested this cordless vacuum on hard floors, rugs, and thick carpets, then used it in my home for over a year – and it never failed to clean a mess in one or two passes.

If you ever find yourself going over the same spot of carpet again and again while your vacuum struggles to pick up the dirt, it's probably time to switch, and this Dyson will immediately solve that issue while freeing up heaps of storage space.

The V12 Detect Slim used to be the primary vacuum in my home, and it was small enough to stash in a closet or under my bed, storing the vacuum out of sight but still within reach. And weighing just 5.22lbs, it can easily be carried upstairs and from room to room with one hand.

And really, that's where my love of cordless vacuums stems from. It's so easy to grab it and clean whenever you see a mess, and as someone with suspected ADHD, this actually helps me clean. It removes any barriers to cleaning, like taking a heavy appliance out of a closet, then having to plug it in around the house.

Instead, I can clean in seconds, and as the V12 Detect Slim is so thorough, every cleaning session is swift.

What's more, it has a green laser that reveals invisible dust – genuinely. I thought it sounded like a gimmick, but what appears to be a spotless floor will suddenly be full of dust and debris particles once the green light shines on it, as you can see in my video, taken during testing, below:

I've tested vacuums from Shark, Miele, Dreame and more that have tried to recreate this game-changing feature, and none have succeeded. Surprisingly, the only one that's come close is the budget-friendly Ultenic U16 Flex, but it doesn't vacuum as well.

The V12 Detect Slim also has floor sensors that identify what surface you're vacuuming and how dirty it is. This means that – in less than a second – it can automatically up the suction power when needed, then return it to a less intense level to save battery life.

There's even a particle counter that measures how much you've picked up during a cleaning session, down to the individual particle size. This isn't an essential vacuum feature, but it is useful to know there's nothing left to vacuum, like when vacuuming a mattress or upholstery.

More to Shop

While you're looking for cleaning upgrades, here's a selection of other outstanding vacuums from the 82 we've tested.

All prices correct at time of publication.

For more affordable cleaning excellence, see which vacuums top our list of the best Dyson alternatives.