iRobot - Wifi Connected j9 Robot Vacuum
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Reddit Reviews:
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Last updated: Jul 19, 2025 Scoring
Liked most:
18
2
"super easy to get long hair out of the rollers/wheels/whatever. ... Wife went through chemo and it was a test for the robot...both survived!"
"I should also mention I have four dogs plus there are 2 Women living in the house, and the j9+ does a great job keeping our house clean."
"this is a great device for that problem."
12
9
"avoids obstacles like a champ."
"The J9+ is amazing with obstacles ... will ask you afterward if each is more permanent, such as furniture being moved around or added. Or if they are temporary, such as the 40 dog toys and balls I have here. It does this to learn"
"There really isn't anything better with obstacles. ... They are somewhat equivalent, but not better than the J9."
19
1
"I never see dog hair on my carpets when they run in contrast to older Roomba series and other brands. ... the Roomba j9 or 10 max is by far the best. ... The vacuum only models are great."
"The j9+ cleaned the apartment to nearly spotless in one pass. ... Now I can run it automatically and my place looks spotless. ... Best money I’ve spent in a long time."
"My home is mostly hardwood and two area rugs. It does all 95 % better than I can any given day!!"
4
1
"Comes with a base station that it blows the content into. ... Super low maintenance that way."
"I like having the bins for self emptying"
"The only time it has come in handy is when she thinks she is full due to debris (leaves)."
5
3
"irobot roomba j9 is very quiet"
"Also I have it programmed for every two to three days and it’s on time and doesn’t bother the nervous queen we have (Siamese) at all."
"noise levels are low."
Disliked most:
9
10
"I would recommend nobody buy a robot vacuum without Lidar at this point. ... I've used two different Roborock systems dating back 4-5 years and are still superior to iRobot's new stuff with only camera based detection and mapping systems. ... My J9+ literally gets lost in its own map and struggles to navigate at times. ... Sometimes it wanders around with an error in the app until it redocks and restarts cleaning."
"But now it's just been non stop problems. ... the damned thing threw a navigation error before it even made it out of the kitchen. ... I really don't like having spent the kind of money this thing cost, for it NOT to work properly."
"It took some weeks and several "mapping runs" for it to finally figure things out, and then it broke and needed replacing. ... It was very frustrating to get working"
0
2
"for the love of God please don get a roomba combo model. They don work… ever."
"and are much worse at mopping."
"and are much worse at mopping."
0
1
"Being in a house with 5 furry cats, a continued annoyance of the Combo 10 Max that was found on my previous Roomba j9+ is that the front recessed camera housing is the perfect design to trap cat fur, causing constant unknown object detection alerts during the photo review after a cleaning session. ... Also, the Combo Max constantly gets fur stuck on the rigid plastic design around the camera which constantly triggers the obstacle detection system. This is a design issue and the same one I experienced on the j9+ combo that I had prior to the Combo Max. Very unfortunate."
"The clean base needs a separate cleaning mechanism just to remove fur from the spinning brush."
0
3
"Those both sound like jet engines."
"before the S9/J9 were an actual nuisance with noise."
"The clean base needs a separate cleaning mechanism just to remove fur from the spinning brush."
1
2
"Yes that happens. Until the base clean is reached you probably have to do it after every run, I now have to remove the hair from the rollers including both ends every second day and do a full clean on weekends."
"The clean base needs a separate cleaning mechanism just to remove fur from the spinning brush."
"Being in a house with 5 furry cats, a continued annoyance of the Combo 10 Max that was found on my previous Roomba j9+ is that the front recessed camera housing is the perfect design to trap cat fur, causing constant unknown object detection alerts during the photo review after a cleaning session. ... Also, the Combo Max constantly gets fur stuck on the rigid plastic design around the camera which constantly triggers the obstacle detection system. This is a design issue and the same one I experienced on the j9+ combo that I had prior to the Combo Max. Very unfortunate."
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