A practical comparison

Roborock Qrevo Edge 2, Curv 2 Flow or QV 35A?

Roborock's Qrevo Edge 2, Qrevo Curv 2 Flow and QV 35A all pair a robot with a dock that handles more than charging, but they are not interchangeable. The useful decision is the exact mop routine and what the owner's floor plan can support: Edge 2 has two rotating pads and warm water in its mop cycle; Curv 2 Flow uses a continually refreshed roller; QV 35A keeps the spinning-pad idea but uses cold-water operation and a simpler tank dock.

Three different mop routines

Qrevo Edge 2's two rotating pads lift automatically, and the mount can detach and reinstall under supported app conditions. Its US FAQ says the robot receives warm water up to 60°C while mopping; the dock washes pads with water up to 80°C and dries them with air up to 55°C. That is the most explicit warm-water path among these three, but it does not make the robot a wet vacuum or excuse leaving standing liquid on the route. The exact manual says to keep floors free of water and prohibits high-pile carpet.

Qrevo Curv 2 Flow uses a wide powered roller that is continuously refreshed and scraped into a dirty-water system. Roborock specifies up to 75°C at the dock heater and up to 55°C at the drying-air outlet; those figures are about station washing and drying, not warm water applied to the floor. Its exact manual also warns against high-pile carpet and any liquid or sticky substance on the floor. A roller may be the right mechanism if you specifically want the surface to refresh during a pass, but that is a hardware choice, not proof it will solve every wet mess.

QV 35A instead uses two liftable spinning pads with a removable-tank wash/refill dock. Its manual limits clean-tank water to cold water, and neither the exact page nor manual confirms a heated mop wash. That makes it less temperature-featured than Edge 2, while still offering automatic dust emptying, pad washing and cold-air drying. You handle the dock's clean and dirty reservoirs, dust bag and tray, and must follow its high-pile and dark-carpet cautions.

Fit can be a bigger difference than suction

Edge 2 is 3.14 inches high and its retractable LiDAR lowers beneath some furniture; QV 35A is listed at 3.8 inches; Curv 2 Flow is 4.69 inches. Measure your lowest required opening instead of selecting by family name. A low body can still fail on rug fringe, loose skirts, irregular floors or a tight turn. Edge 2's exact US sources describe threshold navigation but no numeric crossing limit, so do not transfer a QV or sibling-model maximum to it.

All three include camera or object-avoidance language, but no product's listed suction pressure or recognized-object count tells you how it will perform in your house. Edge 2 lists 25,000 Pa, Curv 2 Flow lists its own maximum pressure, and QV 35A lists a lower figure; those manufacturer specifications are not comparative cleaning tests. Match a real need—like a documented height or mop system—before treating a headline number as decisive.

Compare station space and ongoing care

Each needs water handling and a dust bag, but the details differ. Edge 2 and QV 35A use removable clean- and dirty-water tanks; Curv 2 Flow also relies on removable tanks, with separate roller and dirty-channel care. None of these standard packages is a fixed water-supply-and-drain installation. The manuals give their own dock clearance diagrams; leave the stated front and side space, a hard level surface and enough overhead room, and make sure the station can reach its water tanks and bag lid. Do not use station clearances as if they were the cabinet's physical dimensions.

Edge 2 and QV 35A both use 2.4 GHz-only Wi-Fi, as does the Flow package in its manual. All three manuals ask you to keep loose cables and hazards out of the route. Their precise maintenance tasks differ—Edge 2 adds heated mop washing and detaching pads; Flow has a powered roller path and scraper; QV 35A has cold-air pad drying—but none eliminates washing reservoirs, rinsing the tray or replacing consumables.

A practical choice, not a universal winner

Start with Edge 2 if its 3.14-inch profile, warm-water mop cycle and up-to-80°C dock wash are meaningful to you, and you can live with its removable tanks and explicit high-pile restriction. Choose Curv 2 Flow only if a real-time refreshed roller is the mechanism you want and you accept its taller body plus manual cautions. Choose QV 35A if a straightforward twin-pad dock that uses cold water fits your routine. If high-pile carpet is essential, none of these three has confirmed support in the reviewed US manuals. For a route that must cross a specific threshold, the Edge 2's number is unknown here, so do not treat it as a pass. Read each model's full Edge 2, Curv 2 Flow and QV 35A review against the actual floor plan and care you are willing to do.