iRobot Roomba Combo j9+

Name: iRobot Roomba Combo j9+
Brand: iRobot
Rating: 88 (4 reviews)

Best auto-empty vacuum + mop combo

THE undig SCORE — 4 SOURCES, UNTANGLED

Out of 100

Key characteristics

Suction

Up to 8000 Pa

Mop

Sonic / spinning

Runtime

~3 hrs

Battery

5200 mAh

Auto-empty

Yes

Highlights

✓ Retractable mop — lifts off carpet automatically
✓ Clean Base self-empties into sealed bag
✓ PrecisionVision obstacle avoidance
✓ iRobot OS with room-specific scheduling

Our take

The most reliable vacuum-mop combo — iRobot's obstacle avoidance is still the best at navigating cluttered rooms with pets and kids.

Pros & Cons

Pros

+ Retractable mop is genuinely clever — no wet carpets
+ Self-emptying base keeps maintenance minimal
+ Excellent edge and corner cleaning
+ Solid multi-floor mapping

Cons

− Suction below Roborock and Dreame rivals
− Expensive for what it offers vs. Chinese brands
− Subscription for some advanced AI features

Review sources

Wirecutter Lab · Tier A

Runner-Up

Tom's Guide Lab · Tier A

T3 Expert · Tier B

Reddit Community · Tier C

How scores are calculated

Sources and weighting

Tier A — Top sources 3x weight

RTINGS, Wirecutter, Tom's Guide, Good Housekeeping

Tier B — Expert sites 2x weight

T3, CNN Underscored, Pack Hacker, Notebookcheck

Tier C — Community 1x weight

Reddit, Amazon user reviews

Score normalisation

Source format	Converted to 0–100
RTINGS (0–10 scale)	× 10
Stars (1–5 scale)	× 20
Wirecutter — Top Pick	95
Wirecutter — Runner-Up	85
Wirecutter — Also Great	78
Wirecutter — Budget Pick	72
Reddit sentiment	Manual 0–100 estimate

Final = sum(score × weight) / sum(weights)

Sources without a usable score are shown for reference only and excluded from the calculation. Scores are updated when major new products launch or sources publish re-tests.