Between the Deebot T30 Omni and Roomba j9+, the Deebot T30 Omni comes out ahead in noise and mopping, while the Roomba j9+ wins on battery life. Overall, the Deebot T30 Omni scores 66.6 and the Roomba j9+ scores 49.8 on our Mars Score.
Which should you buy?
The Deebot T30 Omni is the clear pick on raw spec strength, leading by 16.8 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Deebot T30 Omni if you care most about noise and mopping. The biggest gaps in its favor are noise, mopping, lidar, among others.
Pick the Roomba j9+ if you care most about battery life. Its strongest claims are battery life.
Both ship with comparable self-empty base, ai obstacle avoidance, so those specs don't separate the two — focus on the differences below.
Bottom line: the Deebot T30 Omni is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Ecovacs - Deebot T30 Omni wins
- ▲Noise — 5.00 dB less. 63 vs 68.
- ▲Has Mopping.
- ▲Has Lidar.
- ▲Suction: 11000 Pa vs 0 Pa.
- ▲Water tank: 210 ml vs 0 ml.
Why iRobot - Roomba j9+ wins
- ▲Battery life — 11.11% more. 200 min vs 180 min.
Spec comparison
Cleaning
| Spec | Ecovacs - Deebot T30 Omni | iRobot - Roomba j9+ |
|---|---|---|
| Suction | 11000 Palead | 0 Pa |
| Mopping | truelead | false |
| Water tank | 210 mllead | 0 ml |
| Dustbin | 420 ml | 500 mllead |
| Carpet detection | true | true |
Navigation
| Spec | Ecovacs - Deebot T30 Omni | iRobot - Roomba j9+ |
|---|---|---|
| Lidar | truelead | false |
| Camera navigation | true | true |
| AI obstacle avoidance | true | true |
| Max climb | 22 mmlead | 20 mm |
Autonomy
| Spec | Ecovacs - Deebot T30 Omni | iRobot - Roomba j9+ |
|---|---|---|
| Battery life | 180 min | 200 minlead |
| Self-empty base | true | true |
| Self-wash mop | truelead | false |
| Self-dry mop | truelead | false |
| Noise | 63 dBlead | 68 dB |
Frequently asked
Which has stronger suction, Deebot T30 Omni or Roomba j9+?+
Deebot T30 Omni delivers 11000 Pa vs 0 Pa.
Do Deebot T30 Omni or Roomba j9+ mop?+
Deebot T30 Omni mops; Roomba j9+ vacuums only.
Which has a self-emptying base, Deebot T30 Omni or Roomba j9+?+
Both ship with a self-emptying base.
Spec-level deep dives
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