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Home / Home & kitchen / Robot Vacuums / iRobot Roomba Combo j9+
7.8 Tested Aug 24, 2026 by Team RankingRight

iRobot Roomba Combo j9+ (Vacuum and mop with Clean Base) review 2026

The Roomba with a retractable mop arm that lifts fully onto the robot's back on carpet — the best mopping design for mixed floors, with iRobot's pet-mess guarantee

PriceFrom $1,399.99 · checked Sep 11, 2026
Debris recovered90 %
Obstacles avoided3 /3

Is the iRobot Roomba Combo j9+ Worth It?

Best for mixed carpet and hard floors. Roomba's mop-on-the-back design solved the carpet-transition problem better than any spinning-pad robot, and the rollers are the best for pet hair. Without pad washing it needs more of you than the Roborock or Dreame.

iRobot Roomba Combo j9+ Pros & Cons

Pros
  • Mop pad rides on top across carpet — zero damp edges in our test
  • Avoided the pet mess; iRobot replaces the robot if it fails to
  • Dual rubber rollers cleared pet hair without tangling
  • Lowest profile here — fits under more furniture
Cons
  • Dock does not wash the mop pad; you do
  • Camera navigation needs light; slower mapping
  • Two-week test needed one manual pad wash

iRobot Roomba Combo j9+ at a Glance

7.8 Editor Score
Cleaning performanceWeight of rice, sand and pet hair recovered from hardwood and two carpet piles; edge and corner pickup; mopping on dried coffee where offered.
26/30
Navigation & obstaclesMapping accuracy, coverage of the 900 sq ft floor, avoidance of a cable, a sock and a simulated pet mess, no-go zones.
22/25
Dock & maintenanceSelf-emptying, mop washing and drying, water refill, weeks between hands-on tasks.
13/15
App & noiseScheduling, room selection, voice control, measured noise at 1 m.
8/10
ValueList price against the field, plus consumables cost per year.
9/20
Reader ratingNo reader ratings yet — not part of the score
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Own one? Rate it:

Rubric v1: Cleaning performance 30 · Navigation & obstacles 25 · Dock & maintenance 15 · App & noise 10 · Value 20. Score = Σ ÷ 10, locked Sep 11, 2026. How we rank.

Where to buy — prices checked Sep 11, 2026

Amazon — $1,399.99

Best priceSee Price

iRobot — $1,399.99

Also sold atSee Price

iRobot Roomba Combo j9+ specifications

MoppingYes, retractable pad lifts onto the top of the robot
Self-emptying dockYes
Mop washing / dryingNo (dock refills water only)
NavigationCamera vSLAM
Obstacle avoidanceCamera AI; Pet Owner Official Promise
Runtime120 min
Noise66 dB
Height3.4 in

Why it scored 7.8

Roomba's mop-on-the-back design solved the carpet-transition problem better than any spinning-pad robot, and the rollers are the best for pet hair. Without pad washing it needs more of you than the Roborock or Dreame.

Where it loses

Dock — no mop washing.

Still the right pick for

Homes with lots of carpet and pets.

Changelog: Sep 11 — rank 4 → 5; Sep 11 — rank 5 → 6; Sep 11 — rank 3 → 4 · all changes

iRobot Roomba Combo j9+7.8 · $1,399.99
See Price