How much floor space does the charging dock need?

The dock stands 20.2 inches tall, 17.7 inches wide, and 16.8 inches deep, so it needs a clear spot near an outlet. It holds a 2.5 L clean water tank, a 3.5 L dirty water tank, and a 2.5 L dust bag.

Will it fit under my low furniture?

The robot is 3.8 inches tall, so it slides under sofas and cabinets with a bit more clearance than that. Its LiDAR and 3D structured light help it navigate tight spots without bumping.

Can it handle thresholds between rooms?

It clears obstacles up to 20 mm high, so most door sills and thresholds between rooms are no problem. That makes it well suited to homes with several separate rooms on one floor.

How does it keep mopping without me refilling water constantly?

The dock automatically refills the robot's 200 mL onboard tank during cleaning, so it tops itself up mid-run. You can also set three moisture levels depending on how wet you want the floors.

Does it protect my carpets while mopping?

Yes. The mop lifts 5 mm when the robot detects carpet, and Smart Carpet Cleaning boosts suction on rugs. This keeps carpet dry while still mopping your hard floors.

Which voice assistants and smart controls does it support?

It works with Amazon Alexa, Google Assistant, and Apple, so you can start cleans by voice. The app adds no-go zones, multi-level maps for up to 4 floors, and room-specific cleaning.

Top 44% overallDiscontinued

Roborock S8 Pro Ultra

Name: Roborock S8 Pro Ultra
Brand: Roborock
Price: 1099.99 USD
Availability: OutOfStock

A hands-off, self-cleaning robot built for hard-floor homes full of furniture to dodge.

Currently unavailable

7.58

At a glance

The highlights

Our Rating

7.58/10

Good

Cleaning7.85

Navigation7.62

Features6.21

Hands-free dock

Empties its own dustWashes its mopDries its mopRefills its waterDrains dirty waterAdds detergentCleans its dock

6,000 Pa

Modest suction

Vibrating mop pad

Self-washing, lifts on carpet

LiDAR navigation

LiDAR mapping

Dual (rubber)

Anti-tangle design

180 min

Shorter battery life

The good

Pros

6,000 Pa suction with dual rubber brushes lifts everyday dirt and pet hair.
Fully self-maintaining dock empties debris, washes mop pads, and refills the robot's water.
LiDAR plus 3D structured light maps rooms and steers around chair legs and cords.
Runs up to 180 minutes and covers 3,229 sq ft per charge.
Stores maps for up to 4 floors with no-go zones and room-by-room cleaning.
Anti-tangle brush and liftable main brush handle long hair without wrapping.

The trade-offs

Cons

Vibrating mop pad scrubs less aggressively than dual spinning or roller systems.
Cleaning and navigation ratings land in the middle of the pack.
Only one year of warranty coverage.

How the numbers stack up

Performance vs the category

At 6,000 Pa, suction is below the typical robot (median 15,000 Pa).
Runtime comes in at 180 min, on the modest side (category median 200 min).
Single-run coverage comes in at 3,229 sq ft, larger than the typical robot (category median 2,150 sq ft).
At 20 mm, threshold clearance is about average for the robots we track (median 20 mm).
At 68 dB, noise is louder than most (median 64 dB).

Who it's for

Busy households with lots of hard floors and cluttered rooms who want a truly hands-off robot. Great for multi-story homes and pet owners who hate emptying bins and rinsing mop pads.

Who should skip it

Anyone counting on deep scrubbing of dried, stuck-on messes should look elsewhere, since the vibrating pad is gentler than spinning or roller mops built for heavy grime.

The bottom line

Our take

This is a strong pick for hard-floor, obstacle-heavy homes that want set-and-forget cleaning. The dock handles nearly every chore, navigation is dependable, and hair-tangling is minimal. Just know the vibrating mop is better for light, regular mopping than for hard, dried-on messes.

Questions

Frequently asked

Every detail

Full specifications

Specifications

Head to head

How it compares

S8 MaxV Ultra

7.58vs8.06

See comparison

L40 Ultra

7.58vs7.92