iRobot Roomba Plus 515 Combo · Shark Matrix Plus

The dock takes over water, pads and debris for up to three months, but it stands far taller than the 3.29 in robot it serves and needs a fixed spot with power.

Suction is sold only as 3x the Plus 505, a relative claim with no pascal figure on iRobot’s own page.

Multi-pass grid coverage is thorough but slow: crossing the same area repeatedly takes longer per room than a single-sweep pattern.

The base automates bin emptying for up to 60 days but does nothing with water, so filling the tank, rinsing the pad and swapping it stay manual.

Vacuuming runs unattended while mopping is a job you set up: the 2-in-1 saves buying two machines, but only one half of it is autonomous.

Large homes beyond 2,000 square feet per run

iRobot rates coverage at 2,000 sq ft per charge and has not documented recharge-and-resume behavior for larger floor plans on this model.

Deep or high-pile carpet

Pads lift only 10 mm on carpet detection, and no independent carpet test of this model has been published to show how it handles dense pile.

Buyers who want detergent dosed automatically

The dock does not add cleaning solution itself; iRobot directs owners to add a compatible solution to the tank by hand.

Buyers waiting for independent performance testing

Launch coverage from Vacuum Wars and Reviewed contains no test results, so every suction, runtime and coverage figure today is iRobot's own.

Multi-level homes or stair-dependent layouts

Robot cannot navigate stairs. Each floor requires separate mapping and scheduling, and the base has to be moved with it or duplicated per level.

Floors that are rarely cleared before a run

The robot routes around obstacles it detects, but cords, socks and pet toys left down still need picking up first. Households that will not do a pre-run tidy get less complete coverage.

Large homes requiring continuous same-day mop coverage

The 300ml tank is filled by hand and the base does not refill it, so mopping a large floorplan means interrupting the run. Not autonomous for sequential mopping.

Households expecting vacuum and mop in one hands-off pass

Mopping is a manual setup: the pad and the 300ml tank are prepared by hand and the base does nothing with water. Vacuuming is the autonomous half of the machine; mopping is a job you start.

Cloud-privacy-focused households

Room maps, cleaning history and schedules are held in the Shark account rather than only on the robot. Navigation is LiDAR, so no camera imagery of the home is involved, but there is no documented local-only mode.

Owners requiring full autonomy without supervision

Bin emptying at the base is handled for up to 60 days, but retrieving a stuck robot, filling the mop tank and swapping pads remain owner tasks.