Every robot vacuum brand now sells a combination vacuum-and-mop unit. Every one of them markets it as doing both jobs well. After six months and eight units, the honest answer is: some do. Most don’t.
The core tradeoff
A combo unit makes a design compromise every time. The mop pad lives at the back of a vacuum chassis built primarily for suction. On a dedicated mop robot, the pad is positioned, pressurized, and moved the way a human would move a mop. The physics are different.
What that means practically: combo units clean dust and debris extremely well (often better than dedicated vacuums, because they’re newer). Their mopping performance ranges from “adequate on sealed hardwood” to “spreading dirt in a thin film across tile.”
The framework we use
Buy a combo if:
- You have mostly hardwood or sealed tile
- You want one device to run daily
- You’re comfortable with “good enough” mopping
- Your home is under 1,500 sqft
Buy a dedicated vacuum + dedicated mop if:
- You have tile with grout lines
- You have children or pets and need genuine sanitation
- You’re willing to manage two robots
- You care about floor cleaning the way we care about smart home gear
What we actually run
We currently use the Roborock Q5 Pro+ for vacuuming and a Braava Jet m6 as the dedicated mop. Two devices, two schedules, floors that are genuinely clean. The combo units from Dreame and Ecovacs are better than they were two years ago — but not yet better than dedicated hardware.
The full robot vacuum rankings are in the gift guide.