iRobot
iRobot Roomba Combo j9+
iRobot's flagship vacuum and mop combo with a unique top-mounted mop pad that retracts to the robot's top when vacuuming carpet.
Specifications
Features
Pros
- ✓Innovative retractable mop fully lifts to the top of the robot over carpet
- ✓Same excellent carpet cleaning as the j9+ with dual rubber extractors
- ✓Smart mapping learns room types and adjusts cleaning behavior automatically
- ✓P.O.O.P. guarantee covers pet waste incidents
- ✓Quieter than most competitors at 65dB
Cons
- ✗No self-wash dock — you must manually clean the mop pad
- ✗Mopping performance is mediocre compared to dedicated mop robots
- ✗Camera navigation is slower than LiDAR and needs ambient light
- ✗Expensive at $1100 without a self-washing station included
Owner Insights(1,200 discussions)
The Combo j9+ is perhaps the most divisive robot vacuum on Reddit. Its retractable mop mechanism — which lifts the entire mop pad to the top of the robot when it detects carpet — is genuinely praised as the most elegant solution to the carpet-mopping problem. No other robot achieves this level of carpet protection. Combined with iRobot's excellent rubber extractors, it's a capable vacuum.
However, the value proposition is savaged in nearly every thread. At $1100, it doesn't include a self-washing dock — you must manually wash the mop pad after every clean. Competing robots at this price (or even $400 less) include self-emptying, self-washing, hot water cleaning, and stronger suction. The mopping itself is described as basic — light pressure, no spinning or vibrating — more of a damp wipe than true mopping.
The Combo j9+ is recommended almost exclusively for iRobot loyalists who want the retractable mop feature and value the ecosystem (smart home, P.O.O.P. guarantee, US support). For everyone else, Redditors overwhelmingly direct them toward Roborock, Dreame, or Ecovacs for dramatically better features per dollar. The lack of a self-washing dock at this price is described as the single biggest product gap in the current robot vacuum market.
Pros
- +Retractable mop pad lifts completely to the top of the robot — genuinely avoids wetting carpet
- +Same excellent dual rubber extractors as the j9+ for pet hair
- +Smart mapping automatically identifies room types and adjusts behavior
- +P.O.O.P. guarantee covers pet waste incidents
- +Quieter operation than most competitors at 65dB
- +iRobot app is polished and integrates well with smart home systems
- +Retractable mop design means it vacuums carpet with NO mop contact — unique in the industry
- +Strong obstacle avoidance prevents getting stuck on cables and shoes
Cons
- −No self-wash dock at $1100 is inexcusable when $700 competitors include it
- −Must manually wash the mop pad after every clean — defeats the automation purpose
- −Camera navigation is slower than LiDAR and needs ambient light
- −Mopping performance is mediocre — light pressure, no spinning or vibrating
- −iRobot subscription locks some features behind a monthly paywall
- −At $1100, you can get a Roborock with better mopping AND a self-washing dock
- −Mop pad is small and water tank is tiny (210ml) — runs dry on larger rooms
- −Value proposition is extremely weak compared to Chinese competitors