dreame L40s Pro Ultra Robot Vacuum Cleaner vs iRobot Roomba® 405 Combo + AutoWash Dock Robot Vacuum Cleaner with Mop Function
Updated August 2026 — The dreame L40s Pro Ultra Robot Vacuum Cleaner excels in suction power and hands-free operation, while the iRobot Roomba 405 Combo offers great versatility and app integration. Choose based on your budget and cleaning needs.
The dreame L40s Pro Ultra Robot Vacuum Cleaner excels in suction power and hands-free operation, while the iRobot Roomba 405 Combo offers great versatility and app integration. Choose based on your budget and cleaning needs.
Why dreame L40s Pro Ultra Robot Vacuum Cleaner is better
Suction Power
19,000Pa suction vs unspecified
Hands-Free Operation
100 days vs 75 days
Carpet Care
More tailored cleaning options
Why iRobot Roomba® 405 Combo + AutoWash Dock Robot Vacuum Cleaner with Mop Function is better
Price
£349.00 vs £469.00
App Features
More customization options
Mopping Technology
SmartScrub for deeper cleaning
Overall score
Specifications
| Spec | dreame L40s Pro Ultra Robot Vacuum Cleaner | iRobot Roomba® 405 Combo + AutoWash Dock Robot Vacuum Cleaner with Mop Function |
|---|---|---|
| Brand | dreame | iRobot |
| Model | L40s Pro | Roomba 405 |
| Mop Function | Yes | Yes |
| Obstacle Crossing | 4cm | N/A |
| Cleaning Modes | Customizable | Combo |
Dimension comparison
Price Comparison
The dreame L40s Pro Ultra Robot Vacuum Cleaner is priced at £469.00, while the iRobot Roomba 405 Combo is significantly more affordable at £349.00. This price difference of £120 may influence your decision, especially if you're looking for a robot vacuum that offers a balance of features and cost. The higher price of the dreame model may be justified by its advanced features; however, the iRobot option provides substantial cleaning capabilities at a lower entry point, making it more appealing for budget-conscious consumers.
Suction Power
When it comes to suction power, the dreame L40s Pro boasts an impressive 19,000Pa of suction, which is designed to capture both tiny dust particles and larger debris effectively. This high level of suction is particularly beneficial for homes with pets or high traffic areas. In contrast, the iRobot Roomba 405 Combo is designed with "70x more suction" than the Roomba 600 series robots, but does not provide a specific suction measurement. While both vacuums excel in their suction capabilities, the exact power of the dreame model gives it a more concrete edge in performance clarity.
Cleaning Versatility
The dreame L40s Pro Ultra offers tailored cleaning options for different types of carpets, including adjustable mopping methods and intensive carpet cleaning modes. This flexibility allows users to customise their cleaning experience according to their floor types. The iRobot Roomba 405 Combo also excels in versatility, featuring a dual-functionality that allows it to vacuum, mop, or do a combination of both. Its capability to sense carpeted areas and automatically lift mop pads ensures effective cleaning on various surfaces. Both vacuum cleaners cater well to diverse cleaning needs, but the dreame offers more specific carpet care strategies.
Autonomous Features
One of the standout features of the dreame L40s Pro is its All-in-One PowerDock, which allows for up to 100 days of hands-free dust box emptying, along with mopping pad rinsing and drying. This feature significantly reduces maintenance effort. Meanwhile, the iRobot Roomba 405 Combo includes an AutoWash Dock that provides 75 days of auto-emptying and 4 weeks of mopping and pad washing. While both systems enhance autonomy, the dreame’s extended hands-free operation might appeal more to those who prefer minimal interaction with their cleaning devices.
Navigation Technology
The dreame L40s Pro employs an advanced EasyLeap system enabling it to cross obstacles up to 4cm high, ensuring it can navigate through various home environments without getting stuck. On the other hand, the iRobot Roomba 405 utilises ClearView LiDAR technology, which quickly maps your home and avoids obstacles while cleaning in neat rows, even in low light. While both models offer impressive navigation capabilities, the Roomba's LiDAR technology may provide a more sophisticated mapping solution, especially in intricate spaces.
Mopping Capability
Mopping is a crucial feature for many users. The dreame L40s Pro includes a system that allows for tailored mopping and has a 200ml bottle of cleaning solution included. It efficiently handles different floor types, allowing for adjustable mopping based on the surface being cleaned. The iRobot Roomba 405 Combo also features dual mopping pads with SmartScrub technology, offering deeper cleaning with downward pressure and the ability to use compatible cleaning solutions. Both models provide effective mopping, but the unique features of each may cater to different user preferences.
App Integration
App functionality is integral to modern robotic vacuums. The dreame L40s Pro connects to the Dreamehome App, allowing users to select specific cleaning strategies and monitor their vacuum's performance. In comparison, the iRobot Roomba 405 Combo features an intuitive Roomba Home app that lets users customise cleaning routines, check filter health, and manage cleaning schedules. Both apps enhance user experience, but the Roomba's app offers a broader range of customisation options, making it potentially more user-friendly for those who want detailed control over their cleaning.
Which should you buy?
Choosing between the dreame L40s Pro Ultra Robot Vacuum Cleaner and the iRobot Roomba 405 Combo largely depends on your specific cleaning needs and budget. The dreame model offers superior suction power, longer hands-free cleaning capabilities, and advanced carpet care options, making it suitable for households that require thorough cleaning and minimal maintenance. However, if you are looking for a more budget-friendly option with excellent mopping capabilities and intuitive app integration, the iRobot Roomba 405 Combo presents a compelling choice. Ultimately, both vacuums provide robust cleaning solutions, but the right decision hinges on whether you prioritise advanced features or cost-effectiveness.
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