iRobot Roomba 105 Combo vs iRobot Roomba 205

The iRobot Roomba 205 wins overall with a longer runtime, dual-band Wi-Fi and its compact DustCompactor design. The iRobot Roomba 105 Combo is the only one of the two that mops, using a water-only pass on hard floors.

Mopping. The 105 Combo vacuums and mops hard floors with plain water, while the 205 is vacuum-only but compacts dirt internally with its DustCompactor and adds 5GHz Wi-Fi the Combo does not have.

No, it is vacuum-only. The iRobot Roomba 105 Combo mops with water only and avoids carpets and rugs rather than auto-switching to vacuum mode on them.

It compresses collected debris inside the robot itself, so the bin can go longer between emptyings without needing a large auto-empty dock, unlike the 105 Combo's standard bin.

Buyers who want vacuuming and basic water-only mopping in one machine and are willing to trade some runtime and Wi-Fi bandwidth for that.

Buyers who only need vacuuming, want longer runtime and dual-band Wi-Fi, and like the idea of a compact charging base instead of a bulky dock.