The catch
Dyson V12 Detect Slim+
With lots of shedding, the 0.35-liter bin fills fast.
Side by side
The V12 is the right buy if low weight matters on stairs, hard floors and short cleanups. The V15 earns its extra 1.6 pounds at the wrist when you have deep carpet and heavier debris.
Before you buy
The catch
With lots of shedding, the 0.35-liter bin fills fast.
The catch
Over a long handheld job, the motor and bin up top make it feel top-heavy.


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Pick between the lighter everyday model from Dyson and its stronger flagship for mixed floors.
This one comes down to peak suction and weight first, then to the limits of your own setup.
Day to day
Over repeated short passes across a sofa and stair edges, V12's on/off button spares you from holding V15's trigger the whole time. That can be a good reason to pick the Slim even if both floor heads suit your home. V15 is the better pick if its trigger feels comfortable and you value the larger debris capacity. Check each exact compact-tool bundle before assuming the two model names come with the same upholstery attachment.
The point here is how the cleaner is operated in handheld work. It neither converts whole-stick weight into handheld weight nor claims that a button reduces fatigue for every user.
When the debris is fluffy, a trash can close at hand may be worth more than a few extra minutes of battery, given V12's smaller bin. V15 has more onboard capacity, but both still need emptying by hand. V12 suits brief furniture touch-ups with disposal nearby. V15 suits a longer session in a room far from the trash, if carrying the larger vacuum is comfortable.
The inference is about where the interruption happens and not about a promised number of rooms. Bin volume helps you plan for bulky debris, but fur packs unevenly, and neither cleaner compacts it or removes it automatically in a station.
Which one fits
Dyson V12 Detect Slim+ lists “About 5.2 pounds” for weight, while Dyson V15 Detect lists “About 6.8 pounds”. This matters if you will lift it, move it, take it somewhere or put it away after each use.
Stairs are practical to clean with how it handles, its handheld conversion and its tools.
Start-up, handling and storage all suit short, frequent passes.
Above-floor jobs are covered by its handheld mode and compact powered or crevice tools.
It keeps running after one press, so there is no trigger to hold.
A powered floor head makes it a fit for carpet. Look at the comparison for any documented pickup limits.

Dyson, 448884-01
A light Dyson with button controls, a soft roller, particle sensing and a battery you can swap out.

Dyson, 626417-01
The premium all-rounder to measure others against, with strong mixed-floor pickup, automatic debris sensing and two floor heads built for specific jobs.
Spec by spec
| Spec | Dyson V12 Detect Slim+ | Dyson V15 Detect | In practice |
|---|---|---|---|
| Peak suction | 150 air watts | 240 air watts | Higher published output is useful only if your room, surface or workload calls for the extra headroom. It does not, by itself, prove better results. |
| Weight | About 5.2 pounds | About 6.8 pounds | It counts if you plan to lift it, move it, travel with it or store it after every use. |
| Maximum runtime | Up to 60 minutes | Up to 60 minutes | Both models show the same result for “Maximum runtime”, so this row won't decide between them. |
| Main floor tools | Fluffy Optic and Motorbar | Fluffy Optic and Digital Motorbar | Choose working parts that suit your material and your task. A component's name is no proof of a better result. |
Trade-offs
By the numbers
What we found across the cordless vacuums we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Dyson V12 Detect Slim+ |
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| Dyson V15 Detect |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

You do frequent short cleanups and want the lighter Dyson.
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You rank deep carpet pickup above carried weight.
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