Dyson V12 Detect Slim Vacuum

Name: Dyson V12 Detect Slim Vacuum - Expert Reviews
Brand: Dyson

4.1

(18)

Bottom Line

Choose the Dyson V12 Detect Slim if you want a lightweight, laser-guided cordless stick for mostly hard floors; Skip it if you need a large bin or stronger deep-cleaning on thick carpet.

Best for

Best for apartments and small-to-medium homes with lots of hard flooring and a few rugs, especially if you want a lightweight vac for daily pet hair and dust and appreciate the laser head.

Not for

Not for large multi-story homes, heavy shedders who hate frequent emptying, or anyone needing consistent deep-clean performance on thick carpet or shag without interruptions.

Verdict

The V12 Detect Slim hits a sweet spot for people who want Dyson-level engineering without the bulk of the V15/Gen5. Reviews consistently praise its hard-floor results (especially with the green laser head), strong edge/crevice pickup, and light weight that makes quick daily cleanups and handheld jobs genuinely easy. The Auto mode plus LCD readouts are useful, but not essential. The tradeoff is capacity and endurance: the bin is tiny, Boost runtime is short, and the Motorbar can stick or stop on some rugs and thicker carpets. It feels premium, but value improves most when discounted.

Pros

Debris illumination ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 12 reviews 4.8

The green laser illumination on the hard-floor head is widely described as a game-changing feature for spotting fine dust, hair, and debris—especially under furniture and in dim rooms.
Weight ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 16 reviews 4.7

At about 5.2 lb, it is consistently described as one of the lightest premium stick vacs and easier to carry, lift, and use in handheld mode.
Cordless convenience ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.7

Cordless design is a major win for quick daily cleanups and room-to-room use, especially in apartments and smaller homes.
Suitability for small spaces ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.7

Repeatedly recommended for studios, apartments, and smaller homes because it is light, compact, and fast for daily touch-ups.
Under-Furniture Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.7

The slim head and ability to lay nearly flat make it easy to reach under couches and low furniture, with the laser helping spot dust in dark areas.
Filtration / Dust Containment ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.7

Multiple testers describe the system as well sealed with HEPA-level filtration, helping keep fine dust and allergens contained rather than recirculated.
Hard Floor — Fine Dust Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 8 reviews 4.6

With the Laser Slim Fluffy head, fine dust pickup on hard floors is excellent and highly visual, often revealing and removing particles you would otherwise miss.
Packaging quality ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.6

Several reviews highlight organized, mostly recyclable packaging with minimal plastic, making unboxing and setup straightforward.
Convertible handheld design ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.6

It converts to a handheld with a button press and is repeatedly described as easier for above-floor cleaning than heavier cordless models.
Crevice / Groove Pickup (Hard Floors) ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.6

Crevice and groove pickup is above average; several tests show strong usable suction for pulling debris from cracks and grout.
Assembly and Setup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.6

Setup is mostly snap-together and quick out of the box; installing the wall dock is optional but adds convenience and stability.
Ease of use ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 15 reviews 4.6

Most reviews call it user friendly thanks to low weight, button power, and intuitive controls. The main usability downsides are small-bin interruptions and occasional rug-related stoppages.
Overall opinion ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.6

Overall sentiment is very positive: owners love the laser-guided hard-floor cleaning and lightweight ergonomics, with the small bin and carpet/rug quirks as the main drawbacks.
Accessories & Tools ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 11 reviews 4.5

Most packages include two full-size heads plus crevice/combination tools and the Hair Screw Tool; reviewers consistently call the accessory set high quality and genuinely useful.
Stair Cleaning ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.5

Low weight and strong handheld accessories make stairs and vertical surfaces easier than with upright-style vacuums.
Dried-On Stain Removal ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 15 reviews 4.5

The light, balanced feel makes it easy to steer, carry, and use on stairs. Minor handling complaints include Laser head caster quirks and occasional rug resistance.
Controls & UI ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 14 reviews 4.5

The single power button eliminates trigger fatigue and the LCD shows mode, remaining time, particle data, and alerts. A few users still prefer triggers for one-handed on/off control.
Pet-Ready Features ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.5

Reviewers with pets praise the Motorbar and Hair Screw Tool for pulling fur from rugs, furniture, and pet beds; heavy shedders may still prefer a larger-bin model.
Upholstery / Above-Floor Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 8 reviews 4.4

The Hair Screw Tool and other attachments are widely praised for pulling hair from couches, beds, stairs, and car interiors, making handheld cleaning a standout strength.
Edge & Baseboard Cleaning (Hard Floors) ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.4

Edge cleaning is repeatedly called out as a strength, often clearing close to walls without needing a crevice tool, though stubborn powder at edges can take extra passes.
Aesthetic design & finish ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.4

Reviews often compliment the premium Dyson look and polished plastics, though some note the finish can scuff, chip, or peel over time.
Suction & Airflow ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 13 reviews 4.4

Across tests and long-term use, suction feels strong for its size and cleans surface debris extremely well, though it trails larger Dysons for deep carpet extraction.
Floorhead design ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.3

The two-head approach works: Laser Slim Fluffy excels on hard floors while Motorbar handles carpets and hair. Tradeoffs include head-swapping and Motorbar sensitivity on some rugs.
Support & Reliability ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.2

Reviews cite Dyson’s two-year warranty and established service network; reliability is generally viewed as good, with most concerns centered on wear and maintenance rather than failures.
Hair‑Wrap / Tangle Resistance ★ ★ ★ ★ ★ ★ ★ ★ ★ 8 reviews 4.2

De-tangling features reduce hair wrap significantly, though some long hair can still collect on roller ends or axles and needs periodic cleanup.
Comparative performance ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.2

Often positioned as a lighter, slightly less powerful alternative to the V15/Gen5 and a premium step up from older entry Dysons; it also compares well with non-Dyson sticks on usability.
Hair Pickup — Carpets ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.2

Carpet hair pickup is a strong point, with many reports of removing embedded pet fur in a couple of passes.
Tool-change simplicity ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.1

Attachments click in with a quick release and most users find swaps easy, but getting best results often means switching between the Laser Slim Fluffy and Motorbar heads.
Overall durability/longevity ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.1

Longer-term reports describe strong cleaning performance after years of near-daily use, but cosmetic wear (paint chips or rubber coating peel) can show if stored roughly.
Hard Floor — Large Debris Intake ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.1

Large debris pickup is strong overall, though some note the Motorbar can push or miss bigger bits on hard floors compared with using the fluffy head.
Cyclone performance ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.1

The slim cyclone design supports strong everyday suction, but some reviews note it is less aggressive than higher-end Dyson cyclone setups, contributing to weaker deep-carpet performance versus flagship models.
Noise level ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.0

Noise is generally moderate on Eco/Auto and noticeably louder on Boost. Measured dB varies by tester, but most agree it is manageable for a cordless stick vacuum.
Battery & Charging ★ ★ ★ ★ ★ ★ ★ ★ ★ 15 reviews 4.0

Battery is removable and typically takes about 4–4.5 hours to charge. Runtime is ample for small homes but can fall short for multi-level deep cleans unless you add a spare.
Carpet — Low-Pile Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.0

Low-pile carpets are handled well for everyday debris, though fine powders can require extra passes or higher power.
Carpet — Medium-Pile Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.0

Medium-pile carpet performance is generally strong for surface debris and pet hair, but deeper extraction is still behind the most powerful cordless Dysons.
Onboard tool storage ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.0

The wand clip can carry small tools like the crevice and combination attachments, but onboard storage is limited and does not accommodate the full-size heads.
Runtime (Measured, Default) ★ ★ ★ ★ ★ ★ ★ ★ ★ 10 reviews 3.9

Measured Eco/Auto runtimes commonly land around 30–50 minutes with a powered head, varying with floor type and how aggressively Auto boosts suction.
Emptying & Mess Control ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 3.9

Point-and-shoot emptying is generally clean and easy, but the small bin can pack tightly and occasionally needs manual clearing of clumps.
Build quality & durability ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 3.8

Build quality feels tight and premium in most reviews, but a few note small annoyances like finish wear or parts that can feel finicky during emptying or disassembly.
Maintenance requirements ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 3.6

Expect frequent bin emptying and periodic filter/roller cleaning. Most find maintenance straightforward, though some testers call it finicky due to the compact bin and occasional clogs.
Carpet — High-Pile Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 3.6

High-pile carpet and shag are more challenging: performance can be decent but less consistent, and strong suction can cause sticking or slow progress.
Ongoing ownership costs (bags, filters, batteries) ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 3.6

No bags are needed and filters are washable, but adding an extra click-in battery can raise ownership costs if you need longer runtime.
Runtime (Measured, Boost/Turbo) ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 3.5

Boost mode is best for quick spot cleans; many tests show roughly 7–20 minutes depending on the head used.
Clogging & debris prevention ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 3.5

The compact bin and airflow path can fill quickly and trigger clog warnings in heavy-duty use, so it works best as a maintenance vacuum rather than a post-renovation workhorse.
Storage footprint & upright-stand stability ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 3.5

Storage is compact, but it is not reliably freestanding; several reviewers recommend using the wall dock to prevent tipping.

Cons

Automatic shutoff for obstructions ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 3.4

Some users report the Motorbar can stop spinning on certain rugs or when it grabs bulky items, requiring a quick reset—protective, but interruptive.
Price & Value ★ ★ ★ ★ ★ ★ ★ ★ ★ 12 reviews 3.4

Consistently judged expensive at MSRP, but many consider it a strong buy when discounted because it delivers high-end Dyson features in a lighter chassis.
Area Rug Handling ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 3.1

On some area rugs and runners, the Motorbar can feel too grabby or trip, so users often switch to Eco mode or use the fluffy head for smoother gliding.
Bin & Bag ★ ★ ★ ★ ★ ★ ★ ★ 14 reviews 3.1

The bin is notably small (around 0.1 gal/0.38 L). That keeps weight down but forces frequent emptying—especially in larger homes or heavy pet-hair cleanups.
Hair Pickup — Hard Floors ★ ★ ★ ★ ★ ★ ★ ★ 1 review 2.8

Hair pickup on hard floors varies by head: Motorbar tends to lift hair effectively, while the fluffy head can sometimes push longer strands around depending on floor texture.

FAQ

How long does the Dyson V12 Detect Slim run on a charge?

Real-world runtime depends on mode and floorhead. Many reviewers see roughly 30–50 minutes in Eco/Auto with a powered head, while Boost is typically a short burst (often under 20 minutes).

Is the V12 Detect Slim good for carpets and area rugs?

It is generally strong on low- and medium-pile carpet for everyday debris and pet hair, but some rugs and thicker carpets can feel grabby or cause the brush to stop. Using Eco mode or swapping heads can help.

Does the green laser work on carpet?

The laser is designed to highlight fine dust on hard floors and is most useful there, especially under furniture or in dim rooms. It is far less helpful on carpet fibers.

How often will I need to empty the bin?

The bin is intentionally small to keep weight down, so frequent emptying is common during whole-home cleans or heavy pet-hair sessions. For lighter daily maintenance in small spaces, some users can go longer between empties.

Is it a good choice for pets and allergies?

Most reviews say yes: the de-tangling Motorbar and Hair Screw Tool help with fur on rugs and upholstery, and the sealed filtration helps keep fine dust contained. If your pets shed heavily, the small bin can be the main annoyance.