The best iRobot vacuums of 2024: Expert tested and reviewed

iRobot Roomba Combo j9+ features: Vacuums and mops simultaneously | Guarantees to avoid pet accidents | Auto-Retract mopping system | Four-stage cleaning system

The iRobot Roomba Combo j9+ is a two-in-one vacuum and mop that features a retractable mop head. The Combo j9+ will vacuum and mop until it reaches carpet or a rug. At that point, it will lift its retractable mop head to sit on top of the robot, and will only vacuum on the carpeted surfaces. Once it reaches a flooring surface that needs mopping, it’ll drop its mop head back down behind it and begin the two-in-one cleaning once again. 

Like the name implies, the Combo j9+ uses the same technology as the j9+, so you can rest assured you’re getting an intelligent and capable robot. The retractable arm technology is impressive — I ran this in the dark, during the day, in weird shadows, and all kinds of other scenarios and it never mopped over carpet or rugs. It’s truly an intelligent machine.

The improvements made to the Combo j9+ from its predecessor were major ones, and ones that make this such a desirable robot. My absolute favorite feature is how quiet it is self-emptying. To date, it may be the quietest self-emptying robot I’ve tested. The next best feature is also Clean Base related: the robot’s ability to automatically refill the cleaning solution. Both of these features make this Combo machine an attractive option if you need a reliable two-in-one robot vacuum from iRobot.

A reliable, quality two-in-one machine will change your life, and the Combo j9+ falls into that category. One Amazon customer said, “This Roomba Combo has literally improved my life. I’m a happier, less stressed person because I have a Roomba Angel who whisks away dirt, dust and paw prints so I can focus on other things.”

Review: Roomba Combo j9+ review


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