iRobot Roomba Max 775 Combo review: Powerful and hands-free
iRobot Roomba Max 775 Combo: Design and features
The Max 775 has the familiar round Roomba shape, with a black-and-silver finish and two buttons on top for starting or pausing a cleaning job and sending the robot back to its dock. At 14.7 inches long, 14.4 inches wide, and 4.1 inches tall, it’s larger than the average robot vacuum and weighs nearly 13 pounds.
Underneath are two rubber brushes that rotate in opposite directions. One agitates dirt to loosen it from the floor, while the other pulls the debris toward the suction inlet. A pair of edge-sweeping brushes directs dirt from walls and corners into their path.
The Roomba Max 775 has a sleek, low-profile design with two top-mounted buttons for starting a cleaning job and returning the robot to its dock.
Michael Ansaldo/Foundry
The Max 775’s more distinctive features are found in its mopping system. Its fabric-covered roller rotates at 200 rpm, scrubbing the floor while continuously washing itself to avoid spreading dirty water, and mechanically extends toward baseboards for better coverage. When the robot recognizes carpet, it raises the roller and closes a protective cover over it to prevent moisture from reaching the fibers.
The AutoWash Dock is a rectangular unit measuring 17.7 by 16.7 by 17 inches. Separate clean- and dirty-water tanks are stowed beneath its hinged lid along with a dust bag compartment and a reservoir for iRobot’s StayClean cleaning concentrate.
The dock automatically empties the robot’s dustbin into an odor-control bag. It also washes the mop roller with water heated to 167 degrees Fahrenheit, then dries it with warm air. Water and cleaning solution are dispensed automatically. iRobot claims up to three months of hands-free operation, although you’ll still need to refill the clean-water tank periodically and empty the dirty one after each cleaning job to prevent odors.
For navigation, the Max 775 combines LiDAR mapping with AI-assisted obstacle recognition. The Roomba Home app lets you schedule cleanings, target individual rooms, and adjust cleaning preferences. The app also offers heated-water spot cleaning, letting you target a specific area on the map rather than cleaning an entire room.
