iRobot Roomba Plus 678 Combo
iRobot says the Roomba Plus 678 Combo climbs thresholds up to 16 mm (maker's number, step type not given), stands 3.9 in tall, and holds 90 days of dirt in its dock.
Price as of November 2, 2026.
| Limit | Maker figure | Source |
|---|---|---|
| Threshold, up to | 16 mm (maker's number, step type not given) | homesupport.irobot.com |
| Height | 3.9 in | irobot.com |
| Dock holds dirt for | 90 days | irobot.com |
Not published by iRobot: a mop-lift height.
On our guides
- Pet hair, hardwood floors: passes 3 of 5 pet checks
- Roborock vs Roomba: passes 3 of 5 pet checks, also worth it
Compare: Which Roomba to buy, Roomba alternatives that cost less, Roborock vs Roomba.
Maker figures, not our tests. Method.
Amazon listing
We link iRobot Roomba Plus 678 Robot Vacuum & Mop Combo, 30,000Pa Suction, SprayForce AI Pre-Treatment, Self-Cleaning . Not linked:
- A different model: iRobot Roomba Plus 678X Robot Vacuum & Mop Combo, 30,000Pa Suction, SprayForce AI Pre-Treatment, Sel
- Renewed or used: iRobot Roomba 981 Robot Vacuum-Wi-Fi Connected Mapping, Works with Alexa, Ideal for Pet Hair, Carpet
What the maker says the iRobot Roomba Plus 678 Combo does
Mopping
It mops with a roller mop. iRobot gives no mop-lift height. (maker page)
Mop upkeep
The dock washes the mop. The maker does not say the dock dries it, so check the pad does not stay damp. (maker page)
Obstacle avoidance
It spots objects in its path with iRobot's PrecisionVision AI camera (maker page).
Dock
Empties itself into a bag: about 90 days per bag. (maker page)
App and Wi-Fi
- Without the app: iRobot says Roombas can Clean, Dock and Spot Clean without the app. (maker’s words)
- Without internet: iRobot says cleaning needs no app or Wi-Fi; it does not say schedules or maps run offline. (maker’s words)
Parts, warranty and repair
Where iRobot sells parts and how it handles repairs: iRobot parts, warranty and repair.
More limits iRobot publishes
| Limit | Maker figure | Read from |
|---|---|---|
| Mop | roller | irobot.com |
| Self-emptying dock | yes | irobot.com |
| Anti-tangle | yes | irobot.com |
| Obstacles | camera (PrecisionVision) | irobot.com |
| Washes its own mop | yes | irobot.com |
| Mapping | lidar | irobot.com |
Recall check (US and Canada): none found, November 2, 2026. iRobot has 1 other robot recall on file, for different models: iRobot Clean Base dock for the Roomba i7+.
Other iRobot models we track: Roomba 105 Combo, Roomba 105 Vac, Roomba 105X Combo, Roomba 115X Combo, Roomba 205 Combo, Roomba Combo 10 Max, Roomba Max 705 Combo, Roomba Max 715 Vac, Roomba Max 775 Combo, Roomba Max 875 Combo, Roomba Plus 405 Combo, Roomba Plus 415 Combo, Roomba Plus 415X Combo, Roomba Plus 505X Combo, Roomba Plus 515 Combo, Roomba Plus 575 Combo.