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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufactureriRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop vs Roborock S7 Max Ultra Robot Vacuum & Mop
The Roborock S7 Max Ultra Robot Vacuum & Mop is the better choice for hands-free maintenance, boasting a RockDock Ultra that empties, washes, refills, and dries. In real-world use, its 5,500 Pa suction power beats the iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop's 100% stronger suction, ensuring a deeper clean on carpets and hard floors alike. While the iRobot's Clean Base Auto-Fill Dock can empty debris and refill water, it requires manual washing of the mop pad. With the Roborock, you get a fully automated system that handles every aspect of cleaning, making it a no-brainer for anyone who wants to save time and effort in their cleaning routine.
⚖️ Weight: 143.92 oz vs 165.79 oz🌀 Suction Power: 100% stronger vs 5500 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 S7 Max Ultra Robot Vacuum & Mop
★4
(380)•Best Buy
Navigation:PreciSense LiDAR Navigation (Systematic mapping with adaptive route algorithms).
Mapping:LiDAR Mapping (3D Mapping, Matrix Map, Multi-level mapping up to 4 floors, Quick Mapping).
Obstacle Avoidance:Reactive Tech Obstacle Avoidance (Structured Light + Infrared; detects objects without using a camera/images).
Suction Pa:5,500 Pa (HyperForce Suction)
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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 S7 Max Ultra Robot Vacuum & Mop
Battery1 specs
Battery CapacityKey
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
14.4V / 4460 mAh Lithium-ion
Roborock S7 Max Ultra Robot Vacuum & Mop
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 S7 Max Ultra Robot Vacuum & Mop
13.78" (L) x 13.90" (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 S7 Max Ultra Robot Vacuum & Mop
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
★3.6(1,171)Amazon
Roborock S7 Max Ultra Robot Vacuum & Mop
★4(380)Best Buy
| Criterion | iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop | Roborock S7 Max Ultra Robot Vacuum & Mop |
|---|---|---|
| Rating | ★3.6(1,171)Amazon | ★4(380)Best Buy |
Navigation | PrecisionVision Navigation (Camera-based VSLAM with object recognition and avoidance). | PreciSense LiDAR Navigation (Systematic mapping with adaptive route algorithms). |
Mapping | Imprint Smart Mapping (Stores up to 10 maps, room segmentation, room naming, and Keep Out Zones). | LiDAR Mapping (3D Mapping, Matrix Map, Multi-level mapping up to 4 floors, Quick Mapping). |
Obstacle Avoidance | PrecisionVision with AI (Identifies and avoids cords, pet waste, shoes, socks, and seasonal items). | Reactive Tech Obstacle Avoidance (Structured Light + Infrared; detects objects without using a camera/images). |
Suction Pa | Not published (Rated 100% stronger suction vs. Roomba i-Series / 2x Power-Lifting Suction). | 5,500 Pa (HyperForce Suction) |
Brush System | Dual Multi-Surface Rubber Brushes (Resistant to hair tangles) + Edge-Sweeping Brush. | All-Rubber Floating Brush (Durable rubber fins resist hair tangles and adapt to uneven floors). |
Mopping | SmartScrub System (Back-and-forth scrubbing motion with consistent pressure). | VibraRise® Sonic Mopping (Scrubbing up to 3,000 times/min with consistent downward pressure). |
Mop Lift | Auto-Retract Mopping System (Lifts mop pad to the top of the robot to keep carpets completely dry). | 0.20" (5 mm) Automatic Mop Lift (Raises mop when carpet is detected). |
Carpet Boost | Yes (Carpet Boost automatically increases suction on carpets). | Yes (Carpet Boost+ automatically increases suction; Deep Carpet Cleaning mode available). |
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. 4 hours |
Dustbin | 0.08 gal (313 mL) — Internal bin | 0.09 gal (350 mL) — Internal bin |
Water Tank | 0.05 gal (210 mL) — Internal tank (Auto-refilled by dock) | 0.05 gal (200 mL) — Internal tank (Auto-refilled by dock) |
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). | RockDock™ Ultra (Empty, Wash, Refill, Dry, Self-Cleaning). Tanks: 3.0L Clean / 2.5L Dirty / 2.5L Dust Bag. Dims: 16.6" x 19.4" x 16.5". |
Mop Wash | No (Pad requires manual washing) | Yes (Automatic mop washing with high-speed scrubbing brush) |
Mop Dry | No | Yes (Built-in Warm Air Drying) |
Filtration | High-Efficiency Filter (Captures 99% of cat and dog allergens) | E11 Rated Washable Filter |
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 (Deep Carpet Cleaning, Clean Along Floor Direction, Pin-n-Go, No-Go Zones, Invisible Walls). |
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). |
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) | 13.78" (L) x 13.90" (W) x 3.80" (H) |
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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.
Check Price on Amazon→
Roborock S7 Max Ultra Robot Vacuum & Mop
Rating:★4(380)Best Buy
Navigation:PreciSense LiDAR Navigation (Systematic mapping with adaptive route algorithms).
Mapping:LiDAR Mapping (3D Mapping, Matrix Map, Multi-level mapping up to 4 floors, Quick Mapping).
Obstacle Avoidance:Reactive Tech Obstacle Avoidance (Structured Light + Infrared; detects objects without using a camera/images).
Suction Pa:5,500 Pa (HyperForce Suction)
Brush System:All-Rubber Floating Brush (Durable rubber fins resist hair tangles and adapt to uneven floors).
Mopping:VibraRise® Sonic Mopping (Scrubbing up to 3,000 times/min with consistent downward pressure).
Mop Lift:0.20" (5 mm) Automatic Mop Lift (Raises mop when carpet is detected).
Carpet Boost:Yes (Carpet Boost+ automatically increases suction; Deep Carpet Cleaning mode available).
Battery:14.4V / 5200 mAh Lithium-ion
Runtime:Up to 180 min (Quiet Mode)
Charging Time:Approx. 4 hours
Dustbin:0.09 gal (350 mL) — Internal bin
Water Tank:0.05 gal (200 mL) — Internal tank (Auto-refilled by dock)
Auto Empty:Yes
Dock Type:RockDock™ Ultra (Empty, Wash, Refill, Dry, Self-Cleaning). Tanks: 3.0L Clean / 2.5L Dirty / 2.5L Dust Bag. Dims: 16.6" x 19.4" x 16.5".
Mop Wash:Yes (Automatic mop washing with high-speed scrubbing brush)
Mop Dry:Yes (Built-in Warm Air Drying)
Filtration:E11 Rated Washable Filter
Noise Level:Approx. 67 dB (Balanced Mode)
App Features:Roborock App (Deep Carpet Cleaning, Clean Along Floor Direction, Pin-n-Go, No-Go Zones, Invisible Walls).
Voice Assistants:Amazon Alexa, Google Home, Apple Siri Shortcuts.
Multi Floor:Yes (Up to 4 map levels).
Threshold Climb:0.79" (20 mm)
Height:3.80" (96.5 mm)
Dimensions:13.78" (L) x 13.90" (W) x 3.80" (H)
✓ Pros:
- • RockDock™ Ultra provides complete hands-free maintenance (wash, dry, empty, refill, self-clean)
- • VibraRise® mopping system scrubs effective on dried stains and lifts 5mm on carpets
- • Reactive Tech obstacle avoidance offers solid navigation without the privacy concerns of RGB cameras
- • High 5,500 Pa suction power handles carpets and pet hair effectively
- • Built-in warm air drying in the dock (an upgrade over the original S7 MaxV dock)
✗ Cons:
- • Lacks the advanced AI object recognition (RGB camera) found in the 'MaxV' series
- • Single rubber brush is slightly less effective on deep carpets than the S8's DuoRoller
- • Internal water tank (200 mL) and dustbin (350 mL) are smaller than average, relying on the dock
- • Dock footprint is substantial and requires significant floor space
As an Amazon Associate I earn from qualifying purchases.
Check Price on Amazon→
Which one is better?
The Roborock S7 Max Ultra Robot Vacuum & Mop is the better buy for most people - its automatic washing and drying feature crushes the iRobot Roomba Combo j9+.
Who should buy each?
Choose the iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop if: you want a budget-friendly option, you prefer a reliable brand in home cleaning, or you need a good vacuum for pet hair. (143.92 oz weight)
Choose the Roborock S7 Max Ultra Robot Vacuum & Mop if: you want complete hands-free maintenance, you have multiple floor types to clean, or you need high suction power for deep carpet cleaning. (165.79 oz weight)
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 S7 Max Ultra Robot Vacuum & Mop is better if you prioritize rockdock™ ultra provides complete hands-free maintenance (wash, dry, empty, refill, self-clean). 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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