Roborock S8 MaxV Ultra vs. i Robot Roomba j9+: Which Cleans Better in 2026

The Roborock S8 MaxV Ultra and the i Robot Roomba j9+ are two of the most popular all-purpose robotic vacuums on the market. Each model offers unique features, but which one is better for you? compare both vacuum cleaners side by side to help you decide.

Product Descriptions

Roborock S8 MaxV Ultra

• Price: $699
• Key Specs:
• 1200 mm wide sensor with omnidirectional wheels
• Intelligent mapping technology (S5 Pro AI)
• Dual-layer cleaning system (Nano-Clean and Nano-Suction)

i Robot Roomba j9+

• Price: $499
• Key Specs:
• 1200 mm wide sensor with omnidirectional wheels
• iQ Drive technology for smooth, silent operation
• Smart mapping (SLAM)
• High torque motor for deep cleaning

Pro vs. Con Comparison

Roborock S8 MaxV Ultra

Pros:

• Intelligent Mapping: The S5 Pro AI offers advanced mapping and obstacle avoidance, making it easy to clean even complex floors.
• Dual-layer Cleaning System: The Nano-Clean and Nano-Suction system is effective at cleaning carpets and hard floors alike.

Cons:

• Larger Size: At 1096 mm wide, the S8 MaxV Ultra is slightly larger than the j9+, which might be too big for some smaller homes.
• Heavier Weight: The S8 MaxV Ultra weighs 24.5 kg, making it harder to maneuver through tight spaces.

i Robot Roomba j9+

Pros:

• iQ Drive Technology: This technology provides smooth, silent operation, which is great for quiet households.
• Smart Mapping: SLAM (Simultaneous Localization and Mapping) offers accurate room detection and cleaning paths.
• High Torque Motor: The motor is excellent at picking up dirt and debris from carpets and hardwood floors.

Cons:

• Basic Cleaning System: While it’s effective, the j9+ lacks the advanced cleaning features of the S8 MaxV Ultra.
• Less Intelligent Mapping: SLAM might not be as sophisticated as the S5 Pro AI, which could limit its effectiveness in some situations.

FAQ

Q: How difficult is it to set up the Roborock S8 MaxV Ultra and iRobot Roomba j9+? A: Both robots are relatively easy to set up, but you might need a few minutes for the initial configuration through your smartphone app.

Q: Which robot offers better value for money in terms of cleaning efficiency and features? A: The Roborock S8 MaxV Ultra often comes with more advanced mapping technology and efficient suction, making it a strong contender for better value if you prioritize these aspects.

Q: Can both robots be controlled from any smartphone or do they require specific apps? A: You need to download the respective app (Roborock App for Roborock S8 MaxV Ultra, iRobot Home for Roomba j9+) to control and monitor the cleaning process.

Which One to Buy?

The choice between the Roborock S8 MaxV Ultra and i Robot Roomba j9+ depends on your specific needs. If you prioritize advanced mapping and dual-layer cleaning, the S8 MaxV Ultra is a strong contender. However, if you value silent operation and simple setup, the j9+ could be a better fit.

For most households, especially those with complex floor plans, the Roborock S8 MaxV Ultra at $699 would be the better choice. Its advanced mapping and dual-layer cleaning system make it an strong all-around cleaner.

If you prefer a quieter, easier-to-use model without as many features but still effective for basic cleaning tasks, the i Robot Roomba j9+ at $499 might be more suitable.

The Verdict

The Roborock S8 MaxV Ultra offers more advanced features and is better suited for complex floor plans. If you’re looking for a high-end vacuum cleaner with extensive cleaning capabilities, the S8 MaxV Ultra is highly recommended. For those who value simpler operation and a quieter machine, the i Robot Roomba j9+ provides an standout balance at a lower price point.