iRobot Roomba j9+ vs iRobot Roomba Max 705 Vac
Quick take: The iRobot Roomba Max 705 Vac costs $200 less; the iRobot Roomba Max 705 Vac runs longer per charge (210 vs 120 min).
| Spec | iRobot Roomba j9+ | iRobot Roomba Max 705 Vac |
|---|---|---|
| Price | $800 | $600 |
| Rating | 4.3★ (2,400) | 4.2★ (700) |
| Type | Robot Vacuum | Robot Vacuum |
| Suction | Not disclosed | Not disclosed |
| Battery | 120 min | 210 min |
| Navigation | Camera | LiDAR |
| Noise | 65 dB | 65 dB |
| Dustbin | 400 ml | 360 ml |
| Water tank | — | — |
| Self-empty dock | Yes | Yes |
| Auto mop washing | No | No |
| Hot water washing | No | No |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | No | No |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.3 x 13.3 x 3.4 in | 13.4 x 13.4 x 4.1 in |
| Weight | 8.3 lbs | 9.2 lbs |
| Warranty | 1 year | 1 year |
Pros & cons
iRobot Roomba j9+
- ✓Exceptional carpet cleaning — dual rubber extractors are best-in-class for pet hair
- ✓P.O.O.P. guarantee replaces the robot if it runs over pet waste
- ✓Excellent smart home integration with Alexa, Google Home, and Siri
- ✓iRobot OS learns your cleaning habits and suggests schedules
- ✓Clean Base auto-empty system is reliable and relatively compact
- ✗No mop function at this price feels like a miss compared to competitors
- ✗Camera navigation is slower and less efficient than LiDAR
- ✗120-minute battery limits coverage to about 1500 sq ft per run
- ✗iRobot subscription pushes premium features behind a paywall
iRobot Roomba Max 705 Vac
- ✓Strongest Roomba yet — dual rubber extractors still set the bar for pet hair on carpet
- ✓LiDAR navigation finally works in the dark, unlike every camera-based j-series
- ✓Obstacle avoidance is reliable day or night per owner reports
- ✓210-minute runtime roughly doubles the old j-series
- ✓Simpler vacuum-only design avoids the Combo's failure-prone mop dock
- ✗Reddit sentiment is lukewarm (about 56% positive) — fine dust on dark hard floors is a known miss
- ✗iRobot does not publish suction specs, making comparisons guesswork
- ✗New Roomba Home app is slow and less polished than Roborock's
- ✗iRobot's financial turmoil raises long-term support questions
- ✗No mop at all when similarly priced rivals include full wash docks