Comparison Dreame D20 Plus vs Dreame D20 Pro Plus

The cleaning method determines whether the robot can only collect dry debris or also wipe the floor covering with water, as well as which methods are available for this.

— Dry. The robot cleans the floor with brushes and airflow, directing dust, crumbs, hair and pet fur into the dust container. This option is suitable for carpets and hard floors, but does not remove stains and marks from the floor.

— Dry and wet. The device combines debris suction with wiping the floor using a damp attachment. Depending on the design, this can be a simple cloth or an active washing module that handles fresh stains and shoe marks more effectively.

— Side brushes. Small rotating elements that sweep debris along walls, near furniture and from corners towards the main suction opening. One side brush on the edge of the body sweeps debris along walls, near furniture and from corners into the central suction channel. This design is usually sufficient, since the robot most often moves along obstacles with one particular side. Two brushes work on both sides of the body and cover a wider strip of floor in one pass. This setup is especially convenient when moving along walls and between furniture, although on smooth floors fast brushes can sometimes scatter light debris.

— Extendable brush. A movable side brush automatically extends beyond the body when cleaning corners and areas near walls. Compared with a regular fixed design, it reduces uncleaned areas where the robot body cannot get close enough.

— Turbo brush.... A motorized module on the bottom of the robot that picks up debris and directs it into the suction channel. The working part may consist of a roller with bristles, rubber blades or a combined coating. This system collects pet fur, hair and dirt from carpets more effectively than a simple suction opening, but bristled elements need regular cleaning to remove tangled hair.

— Floor scrubber. An active washing module with rotating mops or a roller that does not simply glide over the floor, but mechanically scrubs away dirt. This system removes stains and marks better than a regular cloth.

— Extendable floor scrubber. One of the rotating mops shifts to the side and extends beyond the robot body. This allows the floor to be wiped closer to skirting boards, furniture legs and corners, where a regular fixed floor scrubber leaves a narrow dry strip.

— Vibration wiping. The washing platform rapidly moves the cloth back and forth, increasing friction against the surface. In terms of effectiveness, this option falls between a passive cloth and rotating mops, removing light stains and marks well.

— Cloth wiping. A damp fabric attachment is fixed under the body and pulled across the floor while the robot moves. This simple solution is suitable for regularly removing fine dust and fresh marks, but hardly scrubs off dried-on dirt.

Map building allows the robot vacuum to remember the layout of the room, track covered areas, and plan a consistent cleaning route. The method used to create the map affects its accuracy, orientation speed, and the device’s ability to detect obstacles.

— With sensors. The robot creates an approximate map based on data from the gyroscope, motion sensors, wheels, and collisions with obstacles. This system is more affordable, but determines the exact position of walls and furniture less accurately, and accumulated errors may lead to repeated passes or missed areas.

— With a rangefinder. A laser rangefinder, or LiDAR, measures the distance to surrounding objects and creates an accurate map of the room before completing a full pass around it. It works reliably in low light, confidently detects walls and furniture, and supports room division and no-go zones.

— With a camera. The camera analyzes the surroundings and navigates using visual objects, helping refine the robot’s position and the room layout. Its advantage is the ability to distinguish individual objects, although performance depends more heavily on lighting.

— With a rangefinder and camera. The combined system uses LiDAR for accurate distance measurement and map building, and a camera to detect small objects on the floor. Such a robot not only navigates rooms confidently in any lighting, but also avoids cable...s, shoes, toys, and pet bowls more effectively.

A function in which the robot vacuum cleaner uses a camera and analysis algorithms to determine exactly what is on the floor. The device can distinguish wires, shoes, toys, pet bowls, and other small obstacles, then selects a safe route around them. Compared to conventional sensors, object recognition does not simply detect an obstacle but identifies its type, reducing the risk of getting stuck, collisions, and cables wrapping around the brush.

Battery life determines how much area the robot vacuum can clean before returning to the docking station. Actual performance depends on the selected mode, suction power, floor type, operation of the mops or roller, and layout complexity. Therefore, the stated maximum time is usually achieved in a gentle mode and will be noticeably shorter during intensive cleaning.