We may earn a commission when you buy through links on this page. Learn more.
iRobot Roomba Combo j9+ vs iRobot Roomba Plus 405 Combo
The iRobot Roomba Combo j9+ wins with a score of 7.6/10. Best for: Pet owners who prioritize the P.O.O.P. pet-waste guarantee and want a simple app experience..
iRobot Roomba Combo j9+
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.
Read full reviewiRobot Roomba Plus 405 Combo
A solid mid-tier Roomba that finally brings LiDAR navigation and a self-washing dock under $500. But weak deep-carpet performance and zero obstacle avoidance make it hard to recommend over the Roborock Q Revo or Dreame L40 Ultra at the same price.
Read full reviewScore Comparison
Specifications
| iRobot Roomba Combo j9+ | Spec | iRobot Roomba Plus 405 Combo |
|---|---|---|
| $899 | Price | $400 |
| 5500 | Suction (Pa) | — |
| 4460 | Battery (mAh) | 5000 |
| 67.0 | Noise (dB) | 65.0 |
| — | Dustbin (ml) | — |
| — | Water Tank (ml) | — |
| — | Mop Lift (mm) | — |
| — | Height (mm) | — |
| — | Weight (kg) | — |
| vSLAM Camera | Navigation | LiDAR |
| ✅ | Self-Empty | ✅ |
| ❌ | Self-Wash Mop | ✅ |
| ❌ | Self-Dry Mop | ✅ |
| ✅ | AI Obstacle | ❌ |
The Verdict
The iRobot Roomba Combo j9+ is the better choice with an overall score of 7.6/10 — best for pet owners who prioritize the p.o.o.p. pet-waste guarantee and want a simple app experience.. The iRobot Roomba Plus 405 Combo is more affordable at $400 vs $899.