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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufactureriRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop vs Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
If you're after a powerful vacuum and mop combo, the iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop takes the lead with its Clean Base Auto-Fill Dock, which empties debris for up to 60 days and refills water for 30 days. However, the Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock is no slouch, offering an impressive 4,200 Pa suction power that's perfect for tackling pet hair and carpets. In real-world use, the Roomba's 4460 mAh battery lasts around 120 minutes, which is good for most homes, but the Roborock's 5200 mAh battery can keep going for up to 180 minutes. If you have larger spaces to clean, that extra battery life makes a big difference, giving you more freedom to clean without interruptions.
⚖️ Weight: 143.92 oz vs 134.04 oz🏷️ Battery: 4460 mAh vs 5200 mAh🧹 Suction: 100% stronger vs 4200 Pa
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iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
★3.6
(1,171)•Amazon
Navigation:PrecisionVision Navigation (Camera-based VSLAM with object recognition and avoidance).
Mapping:Imprint Smart Mapping (Stores up to 10 maps, room segmentation, room naming, and Keep Out Zones).
Obstacle Avoidance:PrecisionVision with AI (Identifies and avoids cords, pet waste, shoes, socks, and seasonal items).
Suction Pa:Not published (Rated 100% stronger suction vs. Roomba i-Series / 2x Power-Lifting Suction).
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Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
★4.1
(169)•Amazon
Navigation:PreciSense LiDAR Navigation (360° scanning for precise mapping and adaptive route algorithms).
Mapping:LiDAR Mapping (3D Mapping, Multi-level mapping up to 4 floors, Matrix Map, Quick Mapping).
Obstacle Avoidance:Standard sensor-based avoidance (LiDAR + Bumpers + Cliff Sensors; no AI camera).
Suction Pa:4,200 Pa
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Key spec differences
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
Winner= clear advantage
Spec
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
Battery1 specs
Battery CapacityKey
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
14.4V / 4460 mAh Lithium-ion
Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
14.4V / 5200 mAh Lithium-ion
Design1 specs
Dimensions
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
13.70" (L) x 13.70" (W) x 3.40" (H)
Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
13.90" (L) x 13.80" (W) x 3.80" (H)
+Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
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Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop vs Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
★3.6(1,171)Amazon
Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
★4.1(169)Amazon
| Criterion | iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop | Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock |
|---|---|---|
| Rating | ★3.6(1,171)Amazon | ★4.1(169)Amazon |
Navigation | PrecisionVision Navigation (Camera-based VSLAM with object recognition and avoidance). | PreciSense LiDAR Navigation (360° scanning for precise mapping and adaptive route algorithms). |
Mapping | Imprint Smart Mapping (Stores up to 10 maps, room segmentation, room naming, and Keep Out Zones). | LiDAR Mapping (3D Mapping, Multi-level mapping up to 4 floors, Matrix Map, Quick Mapping). |
Obstacle Avoidance | PrecisionVision with AI (Identifies and avoids cords, pet waste, shoes, socks, and seasonal items). | Standard sensor-based avoidance (LiDAR + Bumpers + Cliff Sensors; no AI camera). |
Suction Pa | Not published (Rated 100% stronger suction vs. Roomba i-Series / 2x Power-Lifting Suction). | 4,200 Pa |
Brush System | Dual Multi-Surface Rubber Brushes (Resistant to hair tangles) + Edge-Sweeping Brush. | All-Rubber Main Brush (Floating design to stay close to uneven floors and resist hair tangles) + Side brush. |
Mopping | SmartScrub System (Back-and-forth scrubbing motion with consistent pressure). | Combined Mopping System (Electronic pump with 30 water flow levels; constant 300g mop pressure). |
Mop Lift | Auto-Retract Mopping System (Lifts mop pad to the top of the robot to keep carpets completely dry). | No (Mop pad stays in contact with the floor; carpet avoidance requires setting No-Mop Zones). |
Carpet Boost | Yes (Carpet Boost automatically increases suction on carpets). | Yes (Automatic Carpet Boost increases suction when carpet is detected). |
Battery | 14.4V / 4460 mAh Lithium-ion | 14.4V / 5200 mAh Lithium-ion |
Runtime | Up to 120 min (Recharge and Resume supported) | Up to 180 min (Quiet Mode) |
Charging Time | Approx. 3 hours | Approx. 6 hours |
Dustbin | 0.08 gal (313 mL) — Internal bin | 0.12 gal (470 mL) — Combined unit |
Water Tank | 0.05 gal (210 mL) — Internal tank (Auto-refilled by dock) | 0.09 gal (350 mL) — Combined unit |
Auto Empty | Yes | Yes |
Dock Type | Clean Base Auto-Fill Dock (Empties debris for up to 60 days, refills water for up to 30 days; 15.8" W x 16.4" D x 16.3" H). | Auto-Empty Dock Pure (2.5 L dust bag capacity, rated for up to 7 weeks; approx. 11.8" W x 17.3" D x 17.3" H). |
Mop Wash | No (Pad requires manual washing) | No |
Mop Dry | No | No |
Filtration | High-Efficiency Filter (Captures 99% of cat and dog allergens) | E11 Rated Washable Filter (Captures 99.7% of particles) |
Noise Level | Approx. 68 dB | Approx. 67 dB (Balanced Mode) |
App Features | iRobot Home App (Dirt Detective prioritizes dirty rooms, Clean While I'm Away, SmartScrub settings, Pet Owner Official Promise). | Roborock App (3D Mapping, No-Go Zones, Invisible Walls, Custom Cleaning Routines, Child Lock). |
Voice Assistants | Amazon Alexa, Google Assistant, Apple Siri. | Amazon Alexa, Google Home, Apple Siri Shortcuts. |
Multi Floor | Yes (Imprint Smart Mapping stores multiple floor plans). | Yes (Up to 4 map levels supported). |
Threshold Climb | 0.6" (1.6 cm) — Reduced slightly due to mopping mechanism | 0.79" (20 mm) |
Height | 3.40" (87 mm) | 3.80" (96.5 mm) |
Dimensions | 13.70" (L) x 13.70" (W) x 3.40" (H) | 13.90" (L) x 13.80" (W) x 3.80" (H) |
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As an Amazon Associate I earn from qualifying purchases. | Check Price on Amazon→ | Check Price on Amazon→ |
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
Rating:★3.6(1,171)Amazon
Navigation:PrecisionVision Navigation (Camera-based VSLAM with object recognition and avoidance).
Mapping:Imprint Smart Mapping (Stores up to 10 maps, room segmentation, room naming, and Keep Out Zones).
Obstacle Avoidance:PrecisionVision with AI (Identifies and avoids cords, pet waste, shoes, socks, and seasonal items).
Suction Pa:Not published (Rated 100% stronger suction vs. Roomba i-Series / 2x Power-Lifting Suction).
Brush System:Dual Multi-Surface Rubber Brushes (Resistant to hair tangles) + Edge-Sweeping Brush.
Mopping:SmartScrub System (Back-and-forth scrubbing motion with consistent pressure).
Mop Lift:Auto-Retract Mopping System (Lifts mop pad to the top of the robot to keep carpets completely dry).
Carpet Boost:Yes (Carpet Boost automatically increases suction on carpets).
Battery:14.4V / 4460 mAh Lithium-ion
Runtime:Up to 120 min (Recharge and Resume supported)
Charging Time:Approx. 3 hours
Dustbin:0.08 gal (313 mL) — Internal bin
Water Tank:0.05 gal (210 mL) — Internal tank (Auto-refilled by dock)
Auto Empty:Yes
Dock Type:Clean Base Auto-Fill Dock (Empties debris for up to 60 days, refills water for up to 30 days; 15.8" W x 16.4" D x 16.3" H).
Mop Wash:No (Pad requires manual washing)
Mop Dry:No
Filtration:High-Efficiency Filter (Captures 99% of cat and dog allergens)
Noise Level:Approx. 68 dB
App Features:iRobot Home App (Dirt Detective prioritizes dirty rooms, Clean While I'm Away, SmartScrub settings, Pet Owner Official Promise).
Voice Assistants:Amazon Alexa, Google Assistant, Apple Siri.
Multi Floor:Yes (Imprint Smart Mapping stores multiple floor plans).
Threshold Climb:0.6" (1.6 cm) — Reduced slightly due to mopping mechanism
Height:3.40" (87 mm)
Dimensions:13.70" (L) x 13.70" (W) x 3.40" (H)
✓ Pros:
- • Clean Base Auto-Fill Dock automates both dust emptying and water refilling
- • Auto-Retract Mopping System is the industry standard for keeping high-pile carpets dry
- • Dirt Detective (iRobot OS) automatically prioritizes the dirtiest rooms
- • Dual Multi-Surface Rubber Brushes are excellent for pet hair and carpets
- • Elegant dock design with a wood-like surface top
✗ Cons:
- • Dock does not wash or dry the mop pad (requires manual maintenance)
- • Navigation and mapping are slower than LiDAR-based competitors
- • Lacks live video monitoring despite having a camera (privacy-focused)
- • Small onboard dustbin relies heavily on frequent auto-emptying
As an Amazon Associate I earn from qualifying purchases.
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Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock
Rating:★4.1(169)Amazon
Navigation:PreciSense LiDAR Navigation (360° scanning for precise mapping and adaptive route algorithms).
Mapping:LiDAR Mapping (3D Mapping, Multi-level mapping up to 4 floors, Matrix Map, Quick Mapping).
Obstacle Avoidance:Standard sensor-based avoidance (LiDAR + Bumpers + Cliff Sensors; no AI camera).
Suction Pa:4,200 Pa
Brush System:All-Rubber Main Brush (Floating design to stay close to uneven floors and resist hair tangles) + Side brush.
Mopping:Combined Mopping System (Electronic pump with 30 water flow levels; constant 300g mop pressure).
Mop Lift:No (Mop pad stays in contact with the floor; carpet avoidance requires setting No-Mop Zones).
Carpet Boost:Yes (Automatic Carpet Boost increases suction when carpet is detected).
Battery:14.4V / 5200 mAh Lithium-ion
Runtime:Up to 180 min (Quiet Mode)
Charging Time:Approx. 6 hours
Dustbin:0.12 gal (470 mL) — Combined unit
Water Tank:0.09 gal (350 mL) — Combined unit
Auto Empty:Yes
Dock Type:Auto-Empty Dock Pure (2.5 L dust bag capacity, rated for up to 7 weeks; approx. 11.8" W x 17.3" D x 17.3" H).
Mop Wash:No
Mop Dry:No
Filtration:E11 Rated Washable Filter (Captures 99.7% of particles)
Noise Level:Approx. 67 dB (Balanced Mode)
App Features:Roborock App (3D Mapping, No-Go Zones, Invisible Walls, Custom Cleaning Routines, Child Lock).
Voice Assistants:Amazon Alexa, Google Home, Apple Siri Shortcuts.
Multi Floor:Yes (Up to 4 map levels supported).
Threshold Climb:0.79" (20 mm)
Height:3.80" (96.5 mm)
Dimensions:13.90" (L) x 13.80" (W) x 3.80" (H)
✓ Pros:
- • Strong 4,200 Pa suction power effectively handles carpets and pet hair
- • Auto-Empty Dock Pure provides up to 7 weeks of hands-free maintenance
- • All-rubber main brush is durable and resists hair tangles better than bristled brushes
- • Precise LiDAR navigation creates accurate maps and supports 3D viewing
- • Large 5200 mAh battery supports long cleaning sessions for larger homes
✗ Cons:
- • Lacks active mop lifting; users must manually set No-Mop Zones for carpets
- • No AI obstacle avoidance for identifying small objects (cables, waste, shoes)
- • Combined water/dust bin design means you cannot remove just one compartment
- • Dock does not wash or dry the mop pad (requires manual cleaning)
As an Amazon Associate I earn from qualifying purchases.
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Which one is better?
The Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock is the better buy for most people - its 5200 mAh battery crushes the Roomba's 4460 mAh. That said, grab the iRobot Roomba Combo j9+ if you want the convenience of an auto-fill water system - it's a game-changer for mopping.
Who should buy each?
Choose the iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop if: you prefer automated water refilling, want superior mopping technology, or have pets and need efficient hair removal. (143.92 oz weight)
Choose the Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock if: you want longer battery life for larger homes, need stronger suction for carpets, or prefer hands-free maintenance for up to 7 weeks.
Conclusion
There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.
Frequently Asked Questions
+Which has better value?
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop excels if you value clean base auto-fill dock automates both dust emptying and water refilling. Roborock Q7 Max+ Robot Vacuum + Mop with Auto-Empty Dock is better if you prioritize strong 4,200 pa suction power effectively handles carpets and pet hair. Pick based on your budget and daily use.
+Is this an independent review?
Yes. We use affiliate links for monetization, but recommendations are research-driven and unbiased.
+Do newer models exist?
Check release timelines from the manufacturers and compare pricing before you buy. We refresh this page when major updates land.
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