Introduction
The Dreame L50s Pro Ultra and the Roborock QV 35S represent two different propositions within the robot vacuum segment with multifunction base. The former, launched in 2026, is positioned as a high-end model with advanced technology and superior features. The latter arrived on the market in 2025 and offers a more streamlined set of functions, though without sacrificing essential elements such as the self-emptying base and mop washing.
Dreame opts for ambitious technical equipment, with suction power that triples its competitor and more sophisticated navigation systems. Roborock, a globally recognised brand in the sector, maintains its philosophy of offering effective solutions with solid construction and a reliable app. Both models are designed for users looking to maximise home cleaning automation, albeit with different approaches in terms of technology and features.
Power and Suction
The most striking difference between these models lies in suction power. The Dreame L50s Pro Ultra reaches 30,000 Pa, a figure that places it amongst the most powerful robots on the market. The Roborock QV 35S offers 10,000 Pa, sufficient power for most domestic situations but clearly inferior.
This difference translates into greater capacity for the Dreame to extract ingrained dirt from carpets or vacuum heavy particles. In homes with pets or long-pile carpets, the additional power can make a notable difference in cleaning results.
The brushing system also presents significant variations. The Dreame incorporates a dual HyperStream brush, specifically designed to prevent hair tangles. The Roborock features a conventional single brush. Both include an anti-tangle side brush, but the Dreame's has an extension to better reach corners and the ability to lift during mopping, something the Roborock cannot do.
The Dreame's main brush also lifts when mopping, preventing it from getting unnecessarily wet and allowing more effective mopping. The Roborock lacks this function on both brushes, meaning that during mopping the brushes remain in contact with the floor.
Mopping
Both models use twin rotating mop systems, but the similarities end there. The Dreame L50s Pro Ultra integrates extendable mops with the Roboswing system, which allows the robot to perform a specific movement to introduce the mop under furniture and overhangs. The Roborock keeps the mops in a fixed position.
Mop lifting is similar on both: 10.5 mm on the Dreame and 10 mm on the Roborock, sufficient to overcome thin carpets without wetting them. However, the Dreame adds the possibility of automatically removing the mops at the base when you only want to vacuum, something the Roborock does not offer.
Regarding mop washing at the base, the Dreame uses hot water whilst the Roborock uses cold water. Hot water is more effective at removing grease residue and dirt adhered to the mops. Drying also differs: hot air on the Dreame versus cold air on the Roborock. Hot air drying speeds up the process and reduces the risk of bad odours.
The Dreame incorporates dirt detection on both the mops and the floor, adjusting the cleaning process as necessary. The Roborock does not have this technology, maintaining standard cleaning patterns regardless of the level of dirt detected.
Navigation System
Both robots use a 3D LiDAR turret to map the home, but the Dreame adds a dual AI camera and a front 3D laser sensor that significantly improve obstacle detection. The Roborock QV 35S dispenses with a camera, relying solely on LiDAR and basic sensors.
The Dreame recognises up to 220 different types of obstacles, including pets and curtains, elements that the Roborock does not specifically identify. The presence of night vision LEDs on the Dreame allows more precise navigation in low-light conditions.
Remote camera access is another function exclusive to the Dreame, allowing you to monitor the home from the mobile app. This feature can be useful for watching pets or checking the state of the home.
Both models integrate AI-based intelligent cleaning systems: CleanGenius on the Dreame and SmartPlan 1.0 on the Roborock. The Dreame adds AI stain recognition, adapting cleaning to areas with greater dirt.
Autonomy and Battery
Battery capacity is identical on both: 5,200 mAh. The Roborock specifies an autonomy of 180 minutes, whilst the Dreame does not detail this data in the available information. In practice, the Dreame's greater suction power may translate into higher energy consumption when operating at maximum performance.
Both robots are designed for medium-large sized homes, although the absence of specific autonomy data on the Dreame makes a direct comparison difficult in this aspect.
Smart Functions
The Dreame L50s Pro Ultra can overcome simple steps, although the table does not specify the exact height. The Roborock QV 35S is prepared for obstacles up to 20 mm, a useful capability for transitions between rooms or small level changes.
A notable difference is the inclusion of a built-in voice assistant on the Dreame, which adds to the Alexa and Google Home compatibility that both models share. The Roborock only works with external voice assistants.
Multifunction Cleaning Base
Both bases include self-emptying of the dust container, mop washing and drying. However, the Dreame's base incorporates third-generation wash tray self-cleaning, a system that keeps the base itself in better hygienic conditions without manual intervention. The Roborock does not have this function.
The Dreame includes a detergent tank that automatically dispenses the product during mop washing. The Roborock lacks this tank, limiting itself to using water. The dust bag capacity is greater on the Dreame: 3.2 litres versus 2.7 litres.
The water tanks are also larger on the Dreame: 4.5 litres of clean water and 4 litres of dirty water, compared to 4 and 3.5 litres respectively on the Roborock. This difference can translate into greater autonomy between refills and emptying.
The Dreame offers an optional plumbing connection kit that is purchased separately, eliminating the need to manually refill and empty tanks. The Roborock does not have this option available.
Dimensions
The Roborock QV 35S is lower than the Dreame: 96.5 mm versus 103.8 mm. This difference of more than 7 millimetres can be decisive in homes with low furniture, allowing the Roborock to access spaces where the Dreame would not fit.
The diameter is practically identical: 350 mm on the Dreame and 353 mm on the Roborock. The robot's internal dust container also varies: 250 ml on the Dreame and 330 ml on the Roborock, although this difference has little practical impact given that both have self-emptying at the base.
The bases have similar dimensions in width but differ in height and depth. The Dreame's base is taller (590 mm versus 521 mm) but less deep (457 mm versus 487 mm). It is advisable to measure the available space before deciding, especially if you plan to place the base under furniture or in a specific recess.
Real-World User Experience
For large homes with multiple floor types, the Dreame L50s Pro Ultra offers a more complete solution. The 30,000 Pa power is especially useful on thick carpets, and the mopping system with extendable mops improves cleaning of edges and corners. The base with hot water and hot air for drying the mops guarantees better long-term hygienic results.
In homes with pets, the Dreame's dual HyperStream brush significantly reduces hair tangles, and the specific animal recognition capability allows more careful navigation. The additional power also helps to pick up hair embedded in fabrics.
The Roborock QV 35S is more suitable for homes with low furniture where its lower height of 96.5 mm makes the difference. Its simpler construction may translate into less maintenance required, and Roborock's brand reliability is a point in favour for users who prioritise durability.
For those seeking total automation with minimal intervention, the Dreame with automatic mop removal, dirt detection and optional plumbing connection kit drastically reduces manual tasks. The Roborock requires greater supervision in aspects such as cleaning the wash tray or changing water.
Conclusion: Which to Choose?
Choose the Dreame L50s Pro Ultra if: You're looking for maximum suction power and the most advanced features on the market. It's ideal for large homes with carpets, homes with pets and users who want to completely automate cleaning without worrying about base maintenance. The additional investment is justified by functions such as hot water washing, hot air drying, extendable mops, intelligent dirt detection and the possibility of connecting to plumbing. The dual camera and advanced obstacle recognition add an extra level of navigation safety.
Choose the Roborock QV 35S if: You prioritise a reduced height to access under low furniture, value Roborock's proven reliability and are looking for an effective solution without needing the most advanced functions. It's a solid option for medium-sized homes with hard floors and thin carpets, where 10,000 Pa is sufficient. Its simpler construction may translate into less maintenance complexity, and the relationship between features and price may be more balanced for users who don't need the maximum level of automation.
