iRobot Roomba Max 705 vs iRobot Roomba Max 705 Combo

The iRobot Roomba Max 705 Combo is the more capable machine because it adds mopping, an auto-washing and auto-drying mop, and a detergent-dispensing dock on top of the same vacuuming hardware. The plain iRobot Roomba Max 705 matches it on suction, navigation and runtime and holds a higher owner rating, but it cannot mop at all, so the Combo wins for anyone who wants wet cleaning.

Mopping. The Combo has a real mopping system with auto mop washing, auto mop drying and an AutoWash dock, while the standard Roomba Max 705 is a vacuum only with no water tank or mop pads. Their suction (13000Pa), 75-minute runtime, LiDAR navigation and self-emptying are otherwise identical.

Yes. Both use laser (LiDAR) navigation with obstacle detection, cliff detection, multi-room mapping and no-go zones, and both connect the same way and work with Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, IFTTT and Matter.

The simpler dry-vacuum design has fewer things that can go wrong, and it carries the higher owner rating of the two. The Combo's added mopping and AutoWash dock introduce more moving parts, which is worth weighing if reliability matters more to you than wet cleaning.

Buy the Combo if you want one robot to vacuum and mop hard floors hands-free, with a self-washing, self-drying mop and a dock that dispenses detergent so you rarely touch the pads.

Choose the standard iRobot Roomba Max 705 if you mostly have carpet or already own a mop, want the higher-rated and simpler unit, and would rather not pay for a mopping system you will not use.