Home › Compare › iRobot Roomba Combo j9+ vs Roborock S8 MaxV Ultra

iRobot Roomba Combo j9+ vs Roborock S8 MaxV Ultra

iRobot's $899 model meets Roborock's $1099 model. We tally wins category by category, then call a verdict.

Our recommendation

Roborock S8 MaxV Ultra wins on more spec categories (5–3), but iRobot Roomba Combo j9+ undercuts it by $200. Choose Roborock S8 MaxV Ultra if you want the better robot; choose iRobot Roomba Combo j9+ if your budget is tight.

iRobot Roomba Combo j9+: 3 category wins Roborock S8 MaxV Ultra: 5 category wins

Side by side

iRobot Roomba Combo j9+

$899

Roborock S8 MaxV Ultra

$1099

Suction

2,800 Pa

10,000 Pa Win

Runtime

120 min

180 min Win

Max coverage

220 m²

300 m² Win

Dustbin

400 ml Win

350 ml

Self-empty dock

Yes

Mopping

Yes

Auto-washes mop

Yes Win

Auto-refills water

Yes

Mop lift

30 mm Win

20 mm

Navigation

Camera (vSLAM)

LiDAR + stereo camera

Obstacle avoidance

PrecisionVision (AI)

Reactive AI (3D)

Noise

68 dB

67 dB Win

Height

87 mm Win

103 mm

HEPA filter

Yes

Carpet boost

Yes

Smart home

Alexa, Google, Siri Shortcuts

Alexa, Google, Matter

iRobot Roomba Combo j9+

Roomba's first credible mop+vacuum combo with a retractable pad.

Buy on Amazon → Buy from iRobot → Prices and availability change frequently. We earn a commission on qualifying purchases.

Roborock S8 MaxV Ultra

Premium do-it-all with reactive obstacle avoidance and a hot-water mop wash dock.

Buy on Amazon → Buy from Roborock → Prices and availability change frequently. We earn a commission on qualifying purchases.

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