Dyson V15s Detect Submarine vs Roborock F25 Ultra Steam Gen 2
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Quick take: The Roborock F25 Ultra Steam Gen 2 costs $24 less; the Roborock F25 Ultra Steam Gen 2 runs longer per charge (100 vs 60 min).
| Spec | Dyson V15s Detect Submarine | Roborock F25 Ultra Steam Gen 2 |
|---|---|---|
| Price | ~$724 | ~$700 |
| Type | Hard Floor Washer | Hard Floor Washer |
| Suction | 240 AW | 25000 Pa |
| Battery | 60 min | 100 min |
| Navigation | — | — |
| Filtration | Whole-machine HEPA-sealed | — |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | 81 dB | — |
| Dustbin | 0.76 L | — |
| Water tank | 300 ml | — |
| Self-empty dock | No | No |
| Auto mop washing | No | No |
| Hot water washing | No | Yes |
| Obstacle avoidance | No | No |
| Carpet detection | No | No |
| Auto mop lifting | No | No |
| Multi-floor mapping | No | No |
| App control | No | No |
| Dimensions | — | — |
| Weight | 8.3 lbs | — |
| Warranty | 2 years | — |
Pros & cons
Dyson V15s Detect Submarine
- ✓One machine handles both wet mopping and dry vacuuming without switching appliances
- ✓Separate clean/dirty water tanks keep you from mopping with dirty water
- ✓Laser dust detection shows exactly where debris is on hard floors
- ✓Swaps back to a standard fluffy or Motorbar head for carpets and stairs
- ✓60-minute max runtime is competitive for a wet-roller stick
- ✗Wet roller head requires a self-clean/dry cycle after every use
- ✗Dry dustbin capacity (0.76L) is on the small side for whole-home cleaning
- ✗Significantly more expensive than dedicated hard-floor washers
- ✗Heavier to maneuver than a standard V15 with the wet head attached
- ✗Replacement rollers and filters add to long-term cost
Roborock F25 Ultra Steam Gen 2
- ✓356°F steam for stuck-on messes
- ✓194°F hot water during washing
- ✓203°F hot-air self-drying
- ✓Up to 100 minutes of runtime
- ✓25,000 Pa rated suction
- ✗$230 more than the original F25 Ultra, which also steams at 356°F
- ✗Launched in October 2026, so it has no track record yet
- ✗Tank sizes, weight, dimensions, noise and warranty are not published