The Dreame L40 Ultra Gen 2 is the newest robot vacuum and mop in Dreame’s L40 Ultra series. What distinguishes the Gen 2 from earlier L40 Ultra models is the extendable side brush and mop, which reach into corners and along edges. The brush and mop extend from the side of the robot when it detects walls or corners, so it can clean tight edges in a single pass. Although the L40 Ultra Gen 2 keeps the self-cleaning dock and effective suction the series is known for, the extending features add more reach to your cleaning routine.
A powerful robot vacuum that can help clean just about any home
The L40 Ultra Gen 2 delivers 25,000Pa of Vormax suction, which is enough to pull up pet hair and general debris from hard floors and carpets. The DuoScrub mopping system uses two oscillating mop pads that physically scrub the floor instead of just dragging across the surface. Mop lifting raises the pads about 10mm above the floor when the robot detects carpet, so the mop doesn’t drag wet pads across your rugs. It also includes four carpet modes, with suction boost for deeper cleaning and carpet avoidance to keep the mop off rugs.
The two extending features on the L40 Ultra Gen 2 are SideReach Vacuuming and MopExtend RoboSwing. The side brush extends outward when the robot’s sensors detect a baseboard or corner, and it sweeps along the wall as the robot passes. MopExtend RoboSwing swings the mop pad up to 1.57 inches from the robot’s body to reach the same wall edges and corners. Both extensions work automatically during cleaning, so the robot adjusts its reach whenever its sensors pick up an edge, and you don’t have to change anything in the app.
The all-in-one PowerDock handles all the maintenance tasks of the cleaning routine on its own. Auto-empty pulls the robot’s dustbin contents into a 4.5-liter bag that stores about 100 days of debris between bag changes. After mopping, the dock washes the pads with hot water at 149 degrees Fahrenheit and dries them with warm air to prevent mildew. The robot uses LiDAR mapping and camera-based obstacle detection to navigate around clutter on the floor, with an LED headlight that helps in low-light conditions.
The single-roller brush design handles most carpet types, but deep-pile and shag carpets may require additional cleaning to fully remove pet hair. The mop lifts about 10mm when the robot detects carpet, which is enough for low to medium-pile carpets but won’t clear thicker rugs. Dreame’s cleaning detergent is sold separately, so you’ll need to factor that into your ongoing maintenance costs along with replacement mop pads and dust bags.
At $460, the Dreame L40 Ultra Gen 2 is a major discount on Dreame’s latest robot vacuum and mop. Pick one up on Amazon while the discount holds for the extending brush and mop technology that reaches into corners and along edges.