Explainer
Does a Steam Robot Vacuum Steam Your Floor or Just the Mop?
Samsung’s 100°C steam never reaches the floor: its station sprays it onto the mop pads after a run, and the footnote under its bacteria claim reads “Not supported in the USA.” Dreame’s newest roller model releases 180°C steam through four outlets to loosen stains during the pass. The wood flooring trade body advises against steam on wood either way.
Photo by Andrey Matveev on Pexels
Two robot vacuums can both carry steam in their marketing and do very different things with it. On one, the steam never leaves the dock. On the other, it is part of the mopping pass.
That split decides what a buyer is paying for: cleaner mop pads, or a different way of treating the floor.
Steam for the pad, not the floorSamsung’s Steam Sanitizes the Mop Pads Inside the Station
For the Jet Bot Combo Steam AI, Samsung’s UK product page says the Clean Station Steam+ sprays high-temperature steam onto the dual mop pads and spins them. Samsung gives the measured steam temperature as 100°C.
The station then dries the pads and cleaning plate with 55°C hot air. The Robovations record for the Samsung Bespoke Jet Bot Combo AI describes the same station sequence.
Neither Samsung machine has a floor-steaming mode.
The Samsung Bespoke AI Jet Bot Steam Ultra record documents the same design: the pads are washed in a steam and water mixture, sanitized with 100°C steam and dried. The floor gets vacuuming and a freshly washed damp pad.
Samsung’s hygiene claim is specific. The page says the station eliminates 99.99% of Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, based on testing by Intertek using its Wash the Mop course.
The footnote under that claim adds two sentences: “Not supported in the USA. Results may vary depending on the actual usage conditions.”
Figure
What a steam station does between runs
- Clean water tanktops up the clean water tank
- Dirty water tankempties the dirty water tank
- Mop trackwashes the mop pads in a steam and water mix; sanitizes the pads with 100°C steam; dries the pads and cleaning plate with 55°C hot air
- Mop trackkeeps unsealed wood off the mopping map
That makes the steam a pad-hygiene feature. It changes how clean the pad is at the start of the next run, not what happens to the floor during this one.
Steam as part of the passDreame Releases Steam During Mopping Itself
Dreame’s IFA 2026 model, the Aqua20 Pro Ultra Roller X Complete, uses steam differently. Vacuum Wars reports a 180°C core temperature, with four outlets applying steam as a pretreatment to loosen dried-on stains before the robot follows with hot-water mopping.
Fonearena’s launch report describes the same sequence, adds that the roller mop is washed at the dock with 100°C hot water, and lists a UK price of £1,299.
Here the steam is aimed at stains during the pass, not at the pad afterward.
The earlier Dreame Aqua 20 Pro Ultra Roller was announced with 160°C steam mopping, 75°C hot-water mopping, 18 N of downward pressure and a 100°C dock wash, per its Robovations record.
Robovations tracker
What has actually changed
3 recorded updates for Dreame Aqua 20 Pro Ultra Roller
- Dreame debuts steam-mopping Aqua20 Pro Ultra Roller X Complete at IFA 2026
Dreame demonstrated the Aqua20 Pro Ultra Roller X Complete at IFA 2026, a new sibling SKU carrying an "X Complete" designation distinct from the tracked Aqua 20 Pro Ultra Roller. Its steam function heats water to 180C through four roller-edge outlets to loosen dried-on stains before a hot-water mopping pass, described by Dreame as a world-first for a robot vacuum. Hands-on coverage documents the feature as zone-limited to under 10 square meters, manually toggled, and cuts runtime from roughly 4 hours to 30-40 minutes when active. Watch whether the steam capability reaches the tracked Aqua 20 Pro Ultra Roller or remains exclusive to the new X Complete SKU.
Lateral - Dreame Aqua 20 Pro Ultra Roller demo footage shows steam-roller mop in operation
Dreame Next demo footage released following the May 2026 announcement showed the Aqua 20 Pro Ultra Roller's steam-roller mechanism operating on hard flooring and cycling through the dock auto-wash sequence. The footage documents dock sequencing behavior and mop-zone transitions that were not visible in the initial announcement slides. Release date and pricing remain undisclosed; verified demo behavior is the primary evidence added relative to the announcement.
Incremental - Dreame unveils Aqua 20 Pro Ultra Roller with 160°C steam mopping at Dreame Next
Dreame announced the Aqua 20 Pro Ultra Roller at the Dreame Next event in May 2026, revealing a 160°C steam roller mop as the product's core differentiator from pad-based systems. The steam-plus-pressure approach represents a documented engineering departure from Dreame's existing X-series and L-series mopping mechanisms. Watch for release date and pricing transparency as leading indicators of production readiness.
Major advance
Neither Dreame model carries an independent measurement of what the steam removes. The temperatures and the stain claim come from Dreame and from launch coverage that repeats them.
Putting a heater on the moving robot rather than in the dock is the design change. What it delivers on a real floor is the open question.
The floor decides firstWood Floors Rule Out Steam Either Way
The National Wood Flooring Association is direct: “Don’t use wet mops or steam mops, which will damage the finish and the wood over long periods of time.”
That guidance maps most directly onto the Dreame approach, where steam is part of the cleaning pass.
A station that steams only the pads still sends a wet pad across the floor. For wood, the question is how wet the pad runs, not whether the dock uses steam.
Check the floor before the feature.
On a robot vacuum, steam names two different jobs: sanitizing the pad after the run, or loosening stains during it, and only the second aims the steam at the floor.
