iRobot Roomba Combo j5+
Not sold at any shop we monitor today, so not in our ranking.
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What the tests like and dislike about the iRobot Roomba Combo j5+
Pros
- Deep cleans carpet better than most Roombas tested Vacuum Wars ↗
- Picks up hair easily with few tangles on its rollers Vacuum Wars ↗
- Camera steers it around toys, cords and pet mess Vacuum Wars ↗
- Spotted and steered around fake pet mess every time Tom's Guide ↗
- Keeps making passes until cereal is cleared from hard floors Tom's Guide ↗
- App makes schedules, room choice and no-mop zones quick to set Tom's Guide ↗
- Clears cat hair from carpet and hard floor without clogging TechRadar ↗
- Does a consistently good job on rugs TechRadar ↗
- App maps the home accurately and shows progress live TechRadar ↗
Cons
- Mop presses down lightly, so it suits only light cleaning Vacuum Wars ↗
- Does not detect carpet in mop mode, so you set no-mop zones Vacuum Wars ↗
- Mop bin has no drip tray and must come out after each run Vacuum Wars ↗
- Brush scatters pet hair instead of collecting all of it Tom's Guide ↗
- You have to swap in the mop bin each time you want to mop Tom's Guide ↗
- Clean Base is loud when it empties the robot Tom's Guide ↗
- Struggles with fine dust such as flour on hard floors TechRadar ↗
- Leaves dirt in corners and along edges TechRadar ↗
- Misses smaller items like curtains and little toys TechRadar ↗
Where the testers disagree
- Carpet: Vacuum Wars: Deep cleans carpet better than most Roombas tested · TechRadar: Does a consistently good job on rugs against Vacuum Wars: Does not detect carpet in mop mode, so you set no-mop zones
- Pet hair: Vacuum Wars: Picks up hair easily with few tangles on its rollers · TechRadar: Clears cat hair from carpet and hard floor without clogging against Tom's Guide: Brush scatters pet hair instead of collecting all of it
- Obstacles: Vacuum Wars: Camera steers it around toys, cords and pet mess · Tom's Guide: Spotted and steered around fake pet mess every time against TechRadar: Misses smaller items like curtains and little toys
- Pickup: Tom's Guide: Keeps making passes until cereal is cleared from hard floors against TechRadar: Struggles with fine dust such as flour on hard floors
Each point sums up, in our words, the review of the test it names, and its link leads to that review. We do not summarise RTINGS or Wirecutter: their lists are linked above.
iRobot Roomba Combo j5+ specifications
The numbers that matter first, then every fact by group. As published by the maker or the shop we read it from.
iRobot · on the market since September 2023
Consumables: a dust bag in the station, which lasts up to 60 days.
Dimensionsrobot and dock
From the published dimensions. The robot passes under furniture with 9 cm of clearance or more. The dock needs a spot 31 cm wide and 40 cm deep.
Mopping 1 fact
- Mop type
How the mop is built: flat pads, two spinning discs or a roller. Discs press harder on dried-on dirt, a roller rinses itself while it works.
- flat or vibrating pad
Dock 4 facts
- Empties the dust bin
The dock empties the robot’s dust bin, usually after every run. You only empty the dock’s bag or bin.
- yes
- Bagless
The dock collects dust in a bin instead of a disposable bag. No bags to buy, but you empty it yourself.
- no
- Dust bag lasts
How long the maker says a dust bag lasts with daily use. With pets or a lot of carpet it is shorter.
- up to 60 days
- Dock size (w × d × h)
The width, depth and height of the dock. Measure the spot you have in mind, and leave room for the lid and for the robot driving in.
- 30.9 × 40.1 × 33.8 cm
Navigation and obstacles 4 facts
- Navigation
How the robot maps your home and follows that map. Lidar measures with a laser and works in the dark, a camera looks along and recognises more.
- camera
- Obstacle avoidance
How the robot sees loose things on the floor, such as cables, socks or a pet accident. A camera with depth sensing sees more than a bumper that reacts on contact.
- AI camera
- Climbs thresholds up to
The highest threshold the robot takes, as the maker states it. Measure your own: the step into a bathroom or onto a balcony is often higher.
- 16 mm
- Climbing system for high thresholds
An extending leg or wheel that carries the robot over a high threshold. Without one it usually stops at about 2 cm.
- no
Robot 3 facts
- Robot height
How tall the robot is. It decides whether it fits under your sofa, bed or cabinet.
- 8.6 cm
- Robot diameter
How wide the robot is. Narrower gets between chair legs more easily, wider usually means a bigger dust bin.
- 33.8 cm
- Robot weight
What the robot weighs. It counts most if you carry it up a staircase every day.
- 3.4 kg
Battery 2 facts
- Battery capacity
The capacity of the battery. It hints at the runtime, but how much the robot draws counts just as much.
- 2,210 mAh
- Runtime per charge
How long the robot cleans on one charge, at its quietest setting. After that it recharges and carries on where it stopped.
- 75 min
Smart features and warranty 2 facts
- Voice assistants
Which voice assistants the robot works with, such as Google Assistant or Alexa.
- Alexa, Google Assistant, Siri
- Warranty
The warranty the maker gives in Germany. Consumer law here stands apart from it and can last longer.
- 2 years
Sources: irobot.nl · homesupport.irobot.com · irobot.com
Our score
Confidence: medium. One lab and fewer than 300 owners’ ratings. The highest score today is 7.9.
-
Lab tests 60%4.4
5 cleaning abilities measured, on one scale for every robot.
- Deep clean on carpet6.4
- Pet hair6.8
- Mopping0.4
- Obstacle avoidance5.5
- Navigation2.5
Measured by Vacuum Wars (read on 29 September 2026).
-
Owners’ ratings 25%4.5
183 ratings, 3.7 stars on average, at Amazon.
-
Features 15%–
Features, 15%: too few facts known yet, so this part is left out.
- Price never countsA sale can’t lift a model. Today’s lowest price sits beside the score, checked every morning.
- No test, no rankOnly robots a lab has tested are ranked. The rest get a provisional score.
- Reviewers beside, not insideReviewers’ picks are shown next to the score and do not count in it.
The testers’ picks
- Vacuum Wars · Position 134 of 15126 September 2026
Positions and labels, never text. These picks are shown beside the score and do not count in it. How the score comes about is on the method page.
