Best Robot Vacuums is reader-supported. When you buy through links on our site, we may earn a commission. Details.

We may earn a commission when you buy through links on this page. Learn more.

Dreame L20 Ultra vs iRobot Roomba Combo j9+

The Dreame L20 Ultra wins with a score of 8.2/10. Best for: Large homes with mostly hard floors who want the best mopping.

Winner

Dreame L20 Ultra

8.2/10$799

Flagship mopping performance with MopExtend edge cleaning and hot water wash, now at an exceptional value

iRobot Roomba Combo j9+ robot vacuum

iRobot Roomba Combo j9+

7.6/10$899

The premium Roomba with the best pet-waste avoidance in the industry, but its basic wipe-only mopping falls short of Roborock and Dreame flagships.

Read full review

Score Comparison

Dreame L20 UltraiRobot Roomba Combo j9+
Overall
8.2
7.6
Hard Floor
8.5
8.2
Carpet
7.5
7.8
Mopping
9.2
6.0
Navigation
8.3
8.0
Noise
8.8
7.0
Smart Features
7.8
7.5
Maintenance
8.0
8.0

Specifications

Dreame L20 UltraSpeciRobot Roomba Combo j9+
$799Price$899
7000Suction (Pa)5500
6400Battery (mAh)4460
63.0Noise (dB)67.0
Dustbin (ml)
Water Tank (ml)
Mop Lift (mm)
Height (mm)
Weight (kg)
LiDAR + AI CameraNavigationvSLAM Camera
Self-Empty
Self-Wash Mop
Self-Dry Mop
AI Obstacle

The Verdict

The Dreame L20 Ultra is the better choice with an overall score of 8.2/10 — best for large homes with mostly hard floors who want the best mopping. The Dreame L20 Ultra is more affordable at $799 vs $899.

Dreame L20 Ultra vs iRobot Roomba Combo j9+: Which Robot Vacuum is Better? | Best Robot Vacuums