Dyson SV47 V15s Detect Submarine Review: Vacuum Meets Mop, Dyson Style

Introduction

Dyson’s V-series vacuums are already well-known for being powerful, sleek, and expensive. The Dyson V15s Detect Submarine (model SV47) takes things further by combining dry vacuuming with wet mopping, making it Dyson’s first true 2-in-1 floor cleaning solution.

But is it just a flashy gimmick—or a real upgrade that’s worth the price? In this review, we look at build quality, suction, mopping performance, usability, and how it stacks up to the competition.

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Section 1: What Is the V15s Detect Submarine (SV47)?

The V15s Detect Submarine is a cordless stick vacuum that builds on the V15 Detect line but includes a Submarine wet roller head, giving it mopping capability.

Key Features:

•Dry Vacuuming: Uses Dyson’s signature Hyperdymium motor with up to 240AW of suction

•Wet Mopping: Submarine head uses a water tank and rotating microfiber roller to clean hard floors

•Laser Dust Detection: Green laser reveals micro-dust on hard floors

•Piezo Sensor: Measures and counts dust particles in real time

•LCD Display: Shows battery life, dirt level, and alerts

•Run Time: Up to 60 minutes (interchangeable battery)

•Filtration: HEPA-grade, traps 99.99% of particles

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Section 2: What’s in the Box?

You’ll typically get:

•Dyson V15s main unit

•Submarine Wet Roller Head

•Fluffy Optic Head (with laser)

•Digital Motorbar Head (for carpets)

•Combination tool

•Crevice tool

•Docking station

•Battery and charger

Everything clicks together cleanly—Dyson’s build quality is still top tier.

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Section 3: Vacuum Performance (Dry)

This is the V15 core strength. On hard floors and carpets, suction is intense. The Digital Motorbar adjusts power automatically and untangles hair with its built-in combs.

Laser Dust Detection

The laser isn’t a gimmick—it’s surprisingly useful. It shows particles you’d miss otherwise, especially on hardwood or tile. Great for detail-focused cleaning.

Dirt Sensor & LCD

The piezo sensor counts particles and shows you real-time stats on the display. The vacuum boosts suction automatically when it senses more dirt, then dials back down—saving power.

Performance Rating: 9.5/10

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Section 4: Mopping Performance (Wet Cleaning)

The big question: does it actually mop?

Submarine Head Features:

•300ml clean water tank

•360ml dirty water tank

•Spinning microfiber roller

•Doesn’t use detergent—just water

It applies a controlled amount of water and picks it up quickly. No puddles, no oversaturation. It’s surprisingly effective for light to medium messes—spills, sticky spots, footprints, etc.

But it’s not a scrubber. Don’t expect it to deep-clean grout or heavy stains.

You’ll also need to clean the roller and tank after each use. It’s not a hard process, but it adds 5–10 minutes to the chore.

Mopping Rating: 8.2/10

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Section 5: Battery and Runtime

•Dry vacuum mode: Up to 60 minutes

•Wet cleaning mode: ~20–25 minutes per tank

•Charge time: ~4.5 hours

•Swappable battery: Extra batteries available separately

Battery life is solid for most homes, but heavy users may want a second battery on standby.

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Section 6: Usability and Design

Weight and Handling

•Weighs ~7 lbs with head attached

•Balanced and easy to maneuver

•Converts to handheld for upholstery or stairs

Dyson continues to lead in ergonomics—everything snaps together smoothly, and the heads glide across surfaces.

LCD and Controls

•Single power trigger (no “on/off” switch)

•LCD is bright and informative

•Modes: Auto, Eco, Boost

The trigger-style operation is divisive—some love the control, others prefer a power button.

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Section 7: Maintenance and Cleaning

Filters: Washable HEPA filter included

Submarine Head: Needs rinsing and drying after each use

Dust Bin: 0.77L, easy empty mechanism

Maintenance is easy but not totally hands-free. You’ll want to stay on top of it to keep the wet mop part hygienic.

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Section 8: Pros and Cons

Pros:

•Excellent vacuum performance on all surfaces

•Laser and dirt sensor genuinely useful

•Wet roller head works well on sealed hard floors

•Smart LCD interface

•Swappable battery

•Premium build quality

Cons:

•Price: Over $900 USD

•Not a deep scrubber—light mopping only

•Submarine head adds cleaning time after use

•No detergent or hot water support

•Trigger-style control not for everyone

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Section 9: Competitors and Alternatives

Dyson V15 Detect (Standard)

Same vacuuming power, no mop—cheaper if you don’t need wet cleaning.

Tineco Floor One S7 Pro

Great mopping vacuum with self-cleaning base, but bulkier and more fragile than Dyson.

BISSELL CrossWave

Affordable vacuum/mop hybrid—less suction and polish than Dyson, but gets the job done for half the price.

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Section 10: Who Should Buy the Dyson V15s Submarine?

Great for:

•People who want one device for vacuuming and mopping

•Dyson fans looking to upgrade

•Hard floor homes (tile, vinyl, hardwood)

•Pet owners and allergy-sensitive users

Skip if:

•You need deep mopping (grout, sticky buildup)

•You’re mostly on carpet

•You want a self-cleaning station

•You’re on a tighter budget

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Conclusion: Final Verdict

The Dyson V15s Detect Submarine (SV47) is a high-end vacuum that adds wet mopping in a smart, well-integrated way. It doesn’t reinvent floor care, but it refines it. If you’re looking to clean floors efficiently with one device—and you’re already in Dyson’s ecosystem—it delivers.

Just be prepared for the maintenance and the premium price.

Final Score: 9/10