Verdict: Outstanding suction and a genuinely useful dust laser, undermined by a trigger you must hold down for the whole clean.
We ran the Dyson V15 Detect as the only vacuum in a three bedroom home for ten weeks. The house has hard floors downstairs, carpet upstairs, one shedding dog and two adults with long hair, which is to say it was a fair fight.
What we were testing
Cordless vacuums are usually sold on suction figures that are hard to relate to a real floor. We were more interested in three practical questions: does it pick up what a mop leaves behind, does the brush bar survive hair, and can you actually finish a whole house on one charge.
Scorecard
Every criterion was judged separately across the full test period.
| Suction | 9.6 | |
|---|---|---|
| Dust detection | 9.2 | |
| Hair handling | 9.4 | |
| Runtime | 8.0 | |
| Handling | 7.8 |
What works
The laser is the feature that changes behaviour. A green diode angled across the floor from the Fluffy Optic head throws fine dust into relief in a way ordinary room light does not. The first time we used it on a floor that had been cleaned the day before, it was faintly embarrassing. It is not a marketing trick; it changes where you push the head and how long you spend there. It only works on hard floors and only in reduced light, and within those limits it is excellent.
The particle counter is more useful than expected. A piezo sensor counts and sizes particles and puts a live bar chart on the LCD. We were sceptical, but it answers a question every vacuum leaves open: have I finished this bit of floor? When the bars drop to nothing you move on. It also sharply increased confidence in the machine, because you can watch it working.
Suction is at the top of the category. The Hyperdymium motor spins to roughly 125,000 rpm and the difference shows on carpet, where embedded grit that other cordless units leave behind comes up in one or two passes.
The hair screw tool works. Its conical brush spirals hair off the end into the bin instead of letting it wrap. Over ten weeks in a house with a dog and long hair, we cut tangled hair off a brush bar exactly zero times. Anyone who has done that with scissors will understand how large an improvement this is.
Filtration and emptying are clean. Whole machine HEPA filtration and a point and shoot bin that ejects into the bag without you putting a hand near the dust.
What does not work
The trigger has to be held throughout. There is no lock on this model. For a quick clean it is fine. For a full house it makes the index finger the limiting factor, and that is a strange design decision on a machine at this price. It is the largest single deduction in this review.
Runtime in the highest mode is short. The quoted figure of around sixty minutes is achievable in the lowest setting with a non powered tool. Use Boost on carpet, which is exactly when you want it, and you are working in single digit minutes. Plan your route.
It is top heavy when used overhead. The motor and bin sit in your hand, so cleaning ceiling corners or high shelves tires the forearm quickly. At roughly 3 kg this is heavier than it feels in the shop.
The bin is small. At 0.76 litres, a full house clean usually meant one mid session empty.
The price is very high, and replacement batteries and tools continue that pattern for years afterwards. This is a long term cost of ownership, not just a purchase.
Who it suits
Households with pets, hard floors, or anyone who wants a single cordless machine to replace a corded vacuum rather than supplement one. If you have a small flat and clean in ten minute bursts, a cheaper Dyson or a rival will cover the same ground for much less.
Conclusion
The V15 Detect takes 8.9. It cleans better than anything else we have used without a cord, and the laser and particle counter turn vacuuming from guesswork into something measurable, which is a real contribution rather than a spec sheet line. Against that sit a held trigger, a short high power runtime and a bin that needs emptying mid clean. None of those are dealbreakers, but at this price they should have been solved. We would buy it again, with the trigger complaint filed every single time.
Tested independently by the J2proxy review desk. We publish drawbacks in every review. Brands can submit a product for testing at quanho@gmail.com.
