Bosch Launches OneFlow Wet-and-Dry Vacuum Cleaner

Bosch announced the OneFlow Wet-and-Dry Vacuum Cleaner on 2 September 2026, a new cordless model that vacuums and mops hard floors in a single pass instead of the usual two-step vacuum-then-mop routine. The company says a full battery charge covers more than 150 square meters of floor, up to 40 minutes of non-stop cleaning in Auto mode. Two tiers, Series 4 and Series 6, launch this month.

The announcement is part of Bosch’s press wave for IFA 2026 in Berlin, the appliance industry’s biggest European trade show. OneFlow slots in alongside vacuuming hardware Bosch already sells, but it is a genuinely new line: the company’s Spotless 2 robot vacuum and Flexxo Series 4 cordless stick vacuum, both covered separately by this news desk, are a robot and a dry-only stick vacuum respectively. OneFlow is neither, it is a hand-guided hybrid built to replace both a vacuum pass and a mop pass on hard flooring.

What does the OneFlow actually do?

The machine combines suction with wet mopping on hard floors in one motion. Bosch states suction power up to 24,000 Pa and a contact pressure of 23 N against the floor, figures the company attributes to its own internal testing methodology rather than an independent lab. The 150-square-meter and 40-minute runtime claim carries a similar caveat: Bosch measured it internally in Auto mode under the EN IEC 62885-4:2020/A1:2023 test standard, clause 6.16.

An anti-tangling system is designed to route hair directly into the wastewater tank rather than letting it catch in the nozzle, a common failure point on wet-dry vacuums. The unit can lie flat to 13 cm in height to reach under furniture, and LED lights in the nozzle illuminate the cleaning path. Bosch says the design cleans to within 2 mm of skirting boards and furniture edges, which would cut down on the manual touch-up pass many wet-dry vacuum owners still do by hand.

How does the self-cleaning station work?

A foot-operated button at the docking station triggers a roller clean using water Bosch says is heated to 70 degrees Celsius, with the company noting actual water temperature may vary, followed by a hot-air drying cycle. Two drying modes are offered: a Quick cycle at about 5 minutes, or a quieter Silent cycle at about 20 minutes. The vacuum itself runs on Bosch-certified batteries.

What separates Series 4 from Series 6?

Both tiers share a MicroClean ring built into the handle, a sensor that reads how much dirt is in the circulating water and gives the user a real-time signal on whether the floor is actually clean, plus three cleaning modes: Auto, Turbo, and Dry.

The tiers diverge on convenience features. Series 6 adds a bi-directional movement assistant that glides forward and backward with reduced effort, and an integrated 100 ml cleaning-agent tank that auto-dispenses into the nozzle. Series 4 offers a forward-only movement assistant, and cleaning agent has to be added by hand, a few drops into the fresh-water tank, rather than dispensed automatically.

What a shopper should know before buying

Bosch has not disclosed pricing for either the Series 4 or Series 6, so a direct cost comparison against existing wet-dry vacuums is not yet possible. Both models are due in September 2026, meaning availability should follow the announcement closely rather than trail it by months. The practical choice between tiers comes down to how much hands-on maintenance a buyer wants to do: Series 6’s auto-dispensing tank and two-way glide suit larger homes or anyone who mops often, while Series 4’s manual dosing and forward-only glide are a reasonable tradeoff for a smaller floor plan at what should be a lower price once one is announced. Shoppers comparing wet-dry and stick vacuum options can browse the current lineup on our vacuum cleaners category page.