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iRobot's Mop-Refilling Roomba Combo j9+ Looks Impressive, But Isn't Revolutionary

iRobot's latest premium 2-in-1 robot vacuum, the $1,399 Roomba Combo j9+, features the same retractable mop as its predecessor, with a new Auto-fill Dock for less maintenance.

 & Angela Moscaritolo Managing Editor, Consumer Electronics

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iRobot is following up its Roomba Combo j7+ 2-in-1 robot vacuum and mop with an even higher-end model that can refill its own water tank, a feature several competitors already offer. 

Announced today, the Roomba Combo j9+ features the same innovative retractable mop as its predecessor, with a new Clean Base Auto-fill Dock that should make the robot a lot more self sufficient. The Roomba Combo j9+ is available for preorder today for $1,399, or $400 more than the Roomba Combo j7+.

The new Auto-fill Dock features a large reservoir inside that can hold up to 30 days' worth of mopping liquid, with support for either plain water or Bona brand floor cleaning solution. When the robot's internal mopping tank runs dry, the Auto-fill Dock will—as its name suggests—automatically fill it back up. That's a big upgrade from the Roomba Combo j7+, which requires manual tank refilling each time. 

The Roomba Combo j9+ can automatically refill its mop tank and empty its dustbin.

This is a welcome feature for the Roomba line, but far from a first for the larger robot vacuum market. iRobot competitors Ecovacs and Roborock first launched automatic mop refilling capabilities on their high-end hybrids, the Deebot X1 Omni and the S7 MaxV Ultra, in early 2022. Moreover, premium models from Ecovacs and Roborock can also wash and dry their own mopping cloths, features that are not available on any Roomba. 

iRobot CEO Colin Angle tells me he's not ruling out future models with automatic mop-washing abilities, but says the company isn't ready to bring one to market at this time. He points out that competing robots with this feature only rinse the mopping pad with water, and still require periodic manual mop washing with soap for a deeper clean. 

"The [automatic mop washing] docks get messy quickly and start to smell," Angle says. "Pad washing isn't necessarily a bad idea, but nobody has figured out how to do it well. The pads are, at best, getting a light rinse. It doesn't clean and disinfect the pad."

Meanwhile, as floor-cleaning robots get more advanced, their docks are getting bigger. Similar to competing models, the Combo j9+'s Auto-fill Dock is much larger than a traditional robot vacuum base station, but it features an attractive wood-like top that doubles as a usable surface. The dock also offers storage for extra mop pads and dust bags.

iRobot was a late entrant to the 2-in-1 market, releasing its first model last year, but is now doubling down on hybrids. The company also recently announced two midrange 2-in-1s, the $799 Roomba Combo j5+ and the $549 Roomba Combo i5+, neither of which feature a retractable mop like the more expensive Combo j7+ and the new Combo j9+. The Roomba Combo j5+ supports no-mop zones and has a camera for obstacle recognition and avoidance, while the more affordable Roomba Combo i5+, meant for smaller homes with mostly hard flooring, does not.

@angela_pcmag The iRobot Roomba Combo j7+ is the first 2-in-1 robot vacuum with a fully retractable mop. When it detects hard flooring, it lowers the mop. When it detects carpets, it raises the mop to the top of the robot and goes on vacuuming. Excited to share my review on PCMag.com. #CapCut #robotvaccuum #robotmop #irobot #roomba #comboj7 #cleaninghacks #smarthome #techtok #cleantok #fyp ? Originalton - CENKGO

Alongside the new Combo models, iRobot is launching the $899 non-mopping Roomba j9+ as a premium standalone robot vacuum. The j9+ series offers the strongest suction power of any Roomba, with double the pickup of the i series, and longer battery life than the j7 series. As the plus-sign indicates, both the Combo and standard j9+ series models support automatic bin emptying, and iRobot says you should only have to change the dust bag every two months. 

On the software side, iRobot OS 7.0, rolling out now, includes a new SmartScrub feature for the Combo j7+ that promises to deliver twice the scrubbing power as the standard mopping mode, addressing one of our primary complaints about the robot. With SmartScrub enabled, the robot will "scrub back-and-forth with consistent downward pressure to eradicate messes," iRobot says. SmartScrub is also available on the Combo j9+. 

The Roomba j9+ series promises to clean the bathoom last for hygiene reasons

iRobot OS 7.0 also includes a new feature for the j9+ series called Dirt Detective, which automatically prioritizes the robot's route to have it tackle the most soiled rooms first, based on past jobs and dirt events, and finish the job in the bathroom. "Cleaning the bathroom before you clean another room is gross," Angle says. "You should clean the bathroom last." 

Direct Detective also customizes the robot's settings based on the room and floor type, so you shouldn't have to manually select cleaning preferences in the app, though you still can if you want. It may, for example, automatically set the robot to make two passes in the kitchen, and increase its suction power over carpet and in hallways. 

About Our Expert

Angela Moscaritolo

Angela Moscaritolo

Managing Editor, Consumer Electronics

My Experience

I'm PCMag's managing editor for consumer electronics, overseeing an experienced team of analysts covering smart home, home entertainment, wearables, fitness and health tech, and various other product categories. I have been with PCMag for more than 10 years, and in that time have written more than 6,000 articles and reviews for the site. I previously served as an analyst focused on smart home and wearable devices, and before that I was a reporter covering consumer tech news. I'm also a yoga instructor, and have been actively teaching group and private classes for nearly a decade. 

Prior to joining PCMag, I was a reporter for SC Magazine, focusing on hackers and computer security. I earned a BS in journalism from West Virginia University, and started my career writing for newspapers in New Jersey, Pennsylvania, and West Virginia.

The Technology I Use

My little Florida beach bungalow is brimming with smart home tech. I have a smart speaker or display in every room, allowing me to control other connected devices by voice. The Nest Hub on my bedside table lets me set wake-up alarms, control my smart light bulbs, and set the temperature on my smart thermostat. I use the Amazon Echo Show 8 on my kitchen counter to browse recipes, reorder protein powder, check the weather, and watch the news while I do dishes. 

Because I suffer from allergies, air purifiers are essential. My favorite model is the Dyson Purifier Cool TP07, which doubles as a fan and continuously sends indoor pollution data to its companion mobile app. 

My pitbull Bradley sheds, so a good robot vacuum is a must. I currently use a premium Ecovacs Deebot that can both vacuum and mop, empty its own dustbin, and wash its own mop cloth. 

For fitness, I like to mix up my routine with cycling, indoor rowing, running, and strength training in addition to yoga. I take classes on the Tonal 2 smart strength training machine, I row indoors on an Aviron machine, and track my beach runs with an Apple Watch while listening to music on my Apple AirPods Pro. On the weekends, I love riding e-bikes like the rugged, beach-friendly Aventon Aventure for fun and fitness.

My job involves a lot of virtual meetings, so a quality webcam, microphone, and ring light are important. I use the Jabra PanaCast 20 webcam, the Elgato Wave: 3 microphone, and a Yesker tripod ring light. 

As for my preferred phone platform, I'm an iPhone person, but I've also extensively used Android for product testing.

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