Premium · Vacuum + mop flagship
iRobot Roomba Combo j9+ Self-Emptying & Auto-Fill Robot Vacuum & Mop
The flagship for anyone tired of managing two robots. It vacuums and mops together, lifting the mop pad automatically on carpet, while a multi-functional base empties the bin and refills the water tank on its own.
Our review
The Combo j9+ solves the annoyance that comes with most vacuum-mop robots: having to fence off carpeted rooms so the mop does not soak them. Here the mop pad lifts automatically the moment it senses carpet, so a single cleaning run can cover hardwood, tile, and rugs in the same pass without you drawing no-mop zones in the app ahead of time.
The base backs that up by handling both halves of the maintenance — emptying the dustbin and refilling the mop’s water supply — so the robot needs less manual attention between runs than a combo that only automates one side. It inherits iRobot’s obstacle-avoidance and smart mapping from the j-series, making it the fullest-featured pick here for a home that wants vacuuming and mopping handled by one machine rather than two.
See exactly what this flagship tier buys over a mid-range combo in our budget vs. mid-range vs. flagship comparison, or the full lineup in our best robot vacuums roundup.
Frequently asked questions
Does it really not need to avoid carpet while mopping?
It lifts its mop pad automatically when it detects carpet, so it can vacuum and mop the same route without you setting up separate no-mop zones for rugged rooms.
What does the multi-functional base do?
It empties the dustbin and refills the mopping water automatically, which is the pairing that lets the robot go longer between manual top-ups than a base that only handles one job.
Does it still need obstacle avoidance like the j7+?
Yes — it uses the same obstacle-detection approach to route around cords, pet waste, and clutter, carried over from iRobot’s j-series vacuums.