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iRobot Roomba Combo j9+ vs Roborock QV 35A
The Roborock QV 35A wins with a score of 8.0/10. Best for: Mid-size homes with hard floors, pets, and low-to-medium pile carpet — buyers who want flagship dock automation without flagship prices.
iRobot Roomba Combo j9+
7.6/10$899
The premium Roomba with the best pet-waste avoidance in the industry, but its basic wipe-only mopping falls short of Roborock and Dreame flagships.
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Score Comparison
iRobot Roomba Combo j9+Roborock QV 35A
Overall
7.68.0
Hard Floor
8.28.8
Carpet
7.87.5
Mopping
6.08.0
Navigation
8.08.2
Noise
7.09.0
Smart Features
7.58.5
Maintenance
8.08.0
Specifications
| iRobot Roomba Combo j9+ | Spec | Roborock QV 35A |
|---|---|---|
| $899 | Price | $400 |
| 5500 | Suction (Pa) | 8000 |
| 4460 | Battery (mAh) | 5200 |
| 67.0 | Noise (dB) | 45.0 |
| — | Dustbin (ml) | 330 |
| — | Water Tank (ml) | — |
| — | Mop Lift (mm) | 10.0 |
| — | Height (mm) | — |
| — | Weight (kg) | 2.7 |
| vSLAM Camera | Navigation | PreciSense LiDAR |
| ✅ | Self-Empty | ✅ |
| ❌ | Self-Wash Mop | ✅ |
| ❌ | Self-Dry Mop | ✅ |
| ✅ | AI Obstacle | ✅ |
Pros & Cons
iRobot Roomba Combo j9+
Roborock QV 35A
Pros
- + 8,000Pa HyperForce suction
- + Auto mop wash and dry dock
- + Anti-tangle spiral rubber brush
- + Very quiet — 45dB in standard mode
- + 180-min runtime covers large homes
- + Multi-floor mapping (up to 4 floors)
Cons
- − Struggles on high-pile and shag carpet
- − No hot water mop wash
- − Reactive Tech obstacle avoidance stumbles on dark floors
- − Reports of occasional dock water leaks
- − Fixed mop arms (no extending edge-mop)
The Verdict
The Roborock QV 35A is the better choice with an overall score of 8.0/10 — best for mid-size homes with hard floors, pets, and low-to-medium pile carpet — buyers who want flagship dock automation without flagship prices. The Roborock QV 35A is more affordable at $400 vs $899.