Roborock S8 MaxV Ultra vs iRobot Roomba Combo j9+
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Quick take: The Roborock S8 MaxV Ultra runs longer per charge (180 vs 120 min).
| Spec | Roborock S8 MaxV Ultra | iRobot Roomba Combo j9+ |
|---|---|---|
| Price | ~$800 | ~$800 |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 10000 Pa | Not disclosed |
| Battery | 180 min | 120 min |
| Navigation | LiDAR + Camera | Camera |
| Filtration | — | — |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | 67 dB | 65 dB |
| Dustbin | 400 ml | 400 ml |
| Water tank | 300 ml | 210 ml |
| Self-empty dock | Yes | Yes |
| Auto mop washing | Yes | No |
| Hot water washing | Yes | No |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | Yes | Yes |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.8 x 13.8 x 3.8 in | 13.3 x 13.3 x 3.4 in |
| Weight | 9.3 lbs | 8.9 lbs |
| Warranty | 1 year | 1 year |
Pros & cons
Roborock S8 MaxV Ultra
- ✓Industry-leading 10000Pa suction picks up pet hair, cereal, and fine dust with ease
- ✓Hot water mop washing keeps pads genuinely clean and odor-free
- ✓AI obstacle avoidance reliably dodges cables, shoes, and pet toys
- ✓Dual rubber brush rolls resist hair tangles better than bristle brushes
- ✓Excellent carpet detection lifts the mop pad high enough to avoid wetting carpet
- ✗Premium price point at $1800 puts it out of reach for many budgets
- ✗Dock is very large and requires significant floor space
- ✗Mop pressure is lighter than dedicated mopping robots
- ✗App has a steep learning curve with many nested menus
iRobot Roomba Combo j9+
- ✓Innovative retractable mop fully lifts to the top of the robot over carpet
- ✓Same excellent carpet cleaning as the j9+ with dual rubber extractors
- ✓Smart mapping learns room types and adjusts cleaning behavior automatically
- ✓P.O.O.P. guarantee covers pet waste incidents
- ✓Quieter than most competitors at 65dB
- ✗No self-wash dock — you must manually clean the mop pad
- ✗Mopping performance is mediocre compared to dedicated mop robots
- ✗Camera navigation is slower than LiDAR and needs ambient light
- ✗Expensive at $1100 without a self-washing station included