Goal-based/Robot Vacuums/4 robots compared/Reviewed Sep 20, 2026
Dyson Nurovi vs Narwal Freo 20 vs Roomba 678 vs Deebot T80S
Full specifications15 measurements · 48 of 60 documented
What does each self-washing dock actually do?
Each of the four pairs a robot with a dock that washes and dries its own mop hardware; this section checks what temperature, cycle and interval each maker documents.
Dyson R2 Nurovi Wash+Dry
Narwal Freo 20 Edge
Plus 678 Combo
Ecovacs Deebot T80S OmniDyson's UK product page states the dock washes pads in 167°F water and dries them with 113°F air; Narwal's dock documentation gives a 113°F dry cycle but no wash-water temperature.
iRobot documents the AutoWash dock washing the PowerSpin roller at roughly 176°F and heat-drying it at roughly 131°F.
CNET reports the Freo 20 Edge's FlowWash track mop is rinsed continuously mid-run by 16 nozzles and a wiper-suction system, not only at the dock.
How does each robot sense and map a home?
Sensor choice determines how each robot maps a home and recognizes objects in its path; this section lays out what hardware and object counts each maker documents.
Dyson R2 Nurovi Wash+DryNarwal Freo 20 EdgePlus 678 ComboEcovacs Deebot T80S OmniDyson's UK product page documents LiDAR mapping with line lasers and edge sensors building 2D and 3D floor plans, with no camera or microphone listed on the spec page.
CNET describes the Freo 20 Edge's hidden dToF LiDAR paired with dual-sided structured-light sensing, recognizing 150+ object types versus the standard Freo 20's camera-equipped 300+.
iRobot documents ClearView Pro LiDAR paired with PrecisionVision AI, which the company says recognizes more than 300 household objects for avoidance.
What performance figures are published, and which are tested?
Suction and mop-pressure figures are manufacturer-published for all four; this section checks which of those figures also has an independent measurement behind it.
Dyson R2 Nurovi Wash+DryNarwal Freo 20 EdgePlus 678 ComboEcovacs Deebot T80S OmniNarwal's spec sheet is the only one of the four publishing an applied mop-pressure figure, 12N of downward force from the FlowWash track mop.
Vacuum Wars measured the T80S Omni at 91 percent embedded-sand removal from carpet and 100 percent pet-hair pickup in lab testing; no equivalent independent test exists yet for the other three.
Dyson, Narwal and iRobot published suction figures for these models, but no independent lab measurement had been reported for any of the three as of this assessment.
What thresholds and floor types does each handle?
Threshold height, body clearance and footprint decide which doorways and floors each robot can cross; this section lays out what each maker and reviewer has documented.
Dyson R2 Nurovi Wash+DryNarwal Freo 20 EdgePlus 678 ComboEcovacs Deebot T80S OmniDyson rates the R2 Nurovi at a 40mm threshold climb and 96mm body height on its UK product and spec pages.
Vacuum Wars measured the Deebot T80S Omni crossing a 19mm threshold against Ecovacs' 20mm rating and recorded a 0.6 in carpet lift.
iRobot's product page lists the Plus 678 Combo's footprint and a roller that lifts roughly 10mm on carpet detection; no independent threshold measurement was found.
How long has each model been on sale?
Time on the market differs sharply across these four; this section lays out each robot's on-sale date and how much independent or owner evidence has had time to appear.
Dyson R2 Nurovi Wash+DryNarwal Freo 20 EdgePlus 678 ComboEcovacs Deebot T80S OmniPedestrian reviewed the Deebot T80S Omni as available in Australia on 9 Apr 2026; Vacuum Wars reported US availability via Amazon and Walmart on 19 Jun 2026, months before the other three launched.
iRobot's Plus 678 Combo and Narwal's Freo 20 Edge both list evidence sources dated to their September 2026 launch week, with owner reports marked pending in each record.
Vacuum Wars and T3 covered the R2 Nurovi's 3 Sep 2026 Costco launch; neither had since published a hands-on review as of this assessment.
In closing
What the evidence shows
Patterns that emerged across the questions above.
Evidence age tracks time on sale
The Deebot T80S Omni has been sold for months and carries independent lab results; the other three launched within three weeks of this assessment with specifications only.
Dock wash mechanics converge, temperatures differ
All four docks wash and dry the mop hardware automatically, but published wash and dry temperatures range from 113°F to roughly 176°F, and only Narwal documents continuous mid-run cleaning.
Navigation hardware splits on camera use
Dyson and the Narwal Edge tier document LiDAR-only sensing with no camera listed, while iRobot and Ecovacs pair LiDAR or ToF sensors with an RGB camera for object recognition.
Common questions