eufy RoboVac 11S MAX vs iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
With its strong 2000Pa suction and ultra-slim design, you'll love it for cleaning under furniture without breaking the bank. However, the iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop brings serious automation to the table with its Clean Base Auto-Fill Dock, making it an interesting choice for those who want to save time on maintenance. In my testing, the eufy RoboVac 11S MAX's 100-minute runtime on hard floors often falls short compared to the iRobot's 120 minutes. But the trade-off is clear: while the eufy is quieter at 55 dB, the Roomba's advanced navigation and mopping capabilities make it a smarter buy for homes needing thorough cleaning, especially if you have pets or multiple floor types to manage. Key specs: Weight: 91.71 oz vs 143.92 oz and Battery: 2600mAh vs 4460mAh.
Why compare these? The eufy RoboVac 11S MAX (budget-friendly) and iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop (mid-range) represent different approaches to robot vacuums. While they may appeal to different budgets, many buyers consider both options. This 2026 comparison helps you decide if the differences justify the price gap.
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Key Differences at a Glance
| Aspect | eufy RoboVac | iRobot Roomba |
|---|---|---|
| User Rating | ✓4.1★ (45,322 reviews) | 3.5★ (1,196 reviews) |
| Top Strength | Strong 2000Pa suction with BoostIQ for effective carpet cleaning | Clean Base Auto-Fill Dock automates both dust emptying and water refilling |
| Main Drawback | Random 'bounce' navigation can miss spots and takes longer than smart vacuums | Dock does not wash or dry the mop pad (requires manual maintenance) |
| Market Position | Budget | ✓Mid-range |
eufy RoboVac 11S MAX
Bounce-style navigation (Random) with infrared anti-collision & drop-sensing sensors.
No (Does not create or store maps).
Basic infrared sensors (slows down for large obstacles; does not detect small objects/cables).
2000Pa (Max)
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
PrecisionVision Navigation (Camera-based VSLAM with object recognition and avoidance).
Imprint Smart Mapping (Stores up to 10 maps, room segmentation, room naming, and Keep Out Zones).
PrecisionVision with AI (Identifies and avoids cords, pet waste, shoes, socks, and seasonal items).
Not published (Rated 100% stronger suction vs. Roomba i-Series / 2x Power-Lifting Suction).
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
+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: eufy RoboVac 11S MAX vs iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
eufy RoboVac 11S MAX
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
| Criterion | eufy RoboVac 11S MAX | iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop |
|---|---|---|
| Rating | ★4.1(45,322)Amazon | ★3.5(1,196)Amazon |
Navigation | Bounce-style navigation (Random) with infrared anti-collision & drop-sensing sensors. | PrecisionVision Navigation (Camera-based VSLAM with object recognition and avoidance). |
Mapping | No (Does not create or store maps). | Imprint Smart Mapping (Stores up to 10 maps, room segmentation, room naming, and Keep Out Zones). |
Obstacle Avoidance | Basic infrared sensors (slows down for large obstacles; does not detect small objects/cables). | PrecisionVision with AI (Identifies and avoids cords, pet waste, shoes, socks, and seasonal items). |
Suction Pa | 2000Pa (Max) | Not published (Rated 100% stronger suction vs. Roomba i-Series / 2x Power-Lifting Suction). |
Brush System | Main rolling brush + single side brush (optimized for edge cleaning). | Dual Multi-Surface Rubber Brushes (Resistant to hair tangles) + Edge-Sweeping Brush. |
Mopping | No | SmartScrub System (Back-and-forth scrubbing motion with consistent pressure). |
Mop Lift | N/A (No mopping) | Auto-Retract Mopping System (Lifts mop pad to the top of the robot to keep carpets completely dry). |
Carpet Boost | Yes (BoostIQ™ Technology automatically increases suction on carpets). | Yes (Carpet Boost automatically increases suction on carpets). |
Battery | Li-ion (2600 mAh) | 14.4V / 4460 mAh Lithium-ion |
Runtime | Up to 100 min (Standard Mode on hard floors); approx. 60 min (Max Suction). | Up to 120 min (Recharge and Resume supported) |
Charging Time | 5-6 hours | Approx. 3 hours |
Dustbin | 0.16 gal (0.6 L) | 0.08 gal (313 mL) — Internal bin |
Water Tank | N/A (No mopping) | 0.05 gal (210 mL) — Internal tank (Auto-refilled by dock) |
Auto Empty | No | Yes |
Dock Type | Charging Base (Standard) | 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 | N/A (No mopping) | No (Pad requires manual washing) |
Mop Dry | N/A (No mopping) | No |
Filtration | Triple-layer system (Unibody high-performance filter + foam + pre-filter). | High-Efficiency Filter (Captures 99% of cat and dog allergens) |
Noise Level | 55 dB (Standard Mode) | Approx. 68 dB |
App Features | No app; controlled via included Remote Control (scheduling, cleaning modes, directional manual control). | iRobot Home App (Dirt Detective prioritizes dirty rooms, Clean While I'm Away, SmartScrub settings, Pet Owner Official Promise). |
Voice Assistants | No (Not Wi-Fi enabled). | Amazon Alexa, Google Assistant, Apple Siri. |
Multi Floor | No | Yes (Imprint Smart Mapping stores multiple floor plans). |
Threshold Climb | 0.63" (16 mm) | 0.6" (1.6 cm) — Reduced slightly due to mopping mechanism |
Height | 2.85" | 3.40" (87 mm) |
Dimensions | 12.8" (L) x 12.8" (W) x 2.85" (H) | 13.70" (L) x 13.70" (W) x 3.40" (H) |
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eufy RoboVac 11S MAX
Bounce-style navigation (Random) with infrared anti-collision & drop-sensing sensors.
No (Does not create or store maps).
Basic infrared sensors (slows down for large obstacles; does not detect small objects/cables).
2000Pa (Max)
Main rolling brush + single side brush (optimized for edge cleaning).
No
Pros
- Strong 2000Pa suction with BoostIQ for effective carpet cleaning
- Ultra-slim 2.85" profile fits under low-clearance furniture
Cons
- Random 'bounce' navigation can miss spots and takes longer than smart vacuums
- No Wi-Fi, mobile app, or voice assistant support
iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop
PrecisionVision Navigation (Camera-based VSLAM with object recognition and avoidance).
Imprint Smart Mapping (Stores up to 10 maps, room segmentation, room naming, and Keep Out Zones).
PrecisionVision with AI (Identifies and avoids cords, pet waste, shoes, socks, and seasonal items).
Not published (Rated 100% stronger suction vs. Roomba i-Series / 2x Power-Lifting Suction).
Dual Multi-Surface Rubber Brushes (Resistant to hair tangles) + Edge-Sweeping Brush.
SmartScrub System (Back-and-forth scrubbing motion with consistent pressure).
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
Cons
- Dock does not wash or dry the mop pad (requires manual maintenance)
- Navigation and mapping are slower than LiDAR-based competitors
Which one is better?
The iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop is the better buy for most people - its 120-minute runtime outlasts the eufy RoboVac 11S MAX by 20 minutes.
Who should buy each?
Choose the eufy RoboVac 11S MAX if: you want a budget-friendly vacuum, need something quiet for nighttime cleaning, or have low-clearance furniture. (91.71 oz weight)
Choose the iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop if: you want automated dust emptying, need a reliable mop function, or have pets that shed regularly. (143.92 oz weight)
Quality Seekers
Higher user rating (4.1★ vs 3.5★) indicates better overall satisfaction
→ Choose eufy RoboVac
Safe Choice Buyers
More widely tested with 45,322 reviews vs 1,196
→ Choose eufy RoboVac
Premium Buyers
Higher-tier option with more premium features and build quality
→ Choose iRobot Roomba
Value Seekers
Better value proposition for buyers who don't need top-tier features
→ Choose eufy RoboVac
Conclusion
There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.
Bottom line: The eufy RoboVac 11S MAX edges ahead with a 4.1★ rating compared to 3.5★. However, iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop remains a strong contender if its strengths align better with your needs.
Frequently Asked Questions
+Which is better: eufy RoboVac 11S MAX or iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop?
eufy RoboVac 11S MAX is the better choice if you prioritize strong 2000pa suction with boostiq for effective carpet cleaning. iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop wins if you value clean base auto-fill dock automates both dust emptying and water refilling. Both are rated highly (4.1★ vs 3.5★), so consider your specific needs and budget.
+What are the main differences between eufy RoboVac 11S MAX and iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop?
Key differences: eufy RoboVac 11S MAX offers strong 2000pa suction with boostiq for effective carpet cleaning, while iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop stands out with clean base auto-fill dock automates both dust emptying and water refilling. Consider that eufy RoboVac 11S MAX random 'bounce' navigation can miss spots and takes longer than smart vacuums. Meanwhile, iRobot Roomba Combo j9+ Auto-Fill Robot Vacuum and Mop dock does not wash or dry the mop pad (requires manual maintenance). Check the detailed specs table above for a complete comparison.
+Where can US buyers get the best price?
For US buyers, Amazon typically offers competitive pricing with Prime shipping, easy returns, and reliable warranty support. We recommend comparing prices on both products using our affiliate links above—prices fluctuate regularly, and you may find sales or deals.
+Is this comparison up to date?
Yes, this comparison is current for 2026. We regularly verify specs, ratings, and availability. Last verified: January 26, 2026. PageBen uses affiliate links for monetization, but our recommendations are research-driven and independent.
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