Read my full Narwal Flow 2 review.
The Narwal Flow 2 is the robotic vacuum you can throw at it if you take the cleanliness of your hard floors seriously – it takes some confidence in cleanliness to walk around the house with bare feet. Between the robust XL roller and the hot water jet, the Flow 2 has the elbow grease to soak up large liquid spills and dissolve sticky or greasy droplets without greasing.
If your family is prone to spills, perhaps from children, pets, or regular visitors, the Flow 2 precise barrier and dirt detection technology will help with those big problems of the moment.
If you’ve vowed to vacuum your robot vacuum after you’ve cheaply mopped your area with dirty water, a robotic vacuum roller mop should be your next step. The Narwal Flow 2 is my top recommendation for the mid-2026, mainly because it hasn’t missed a beat in the several months I’ve been testing it.
Robot roller mop vacuums reduce lubrication in several ways. A material such as a bath towel is already thick and absorbent, and is frequently washed to prevent spills from being dragged to the clean area. If the roller gets heavily soiled during heavy cleaning, Flow 2 automatically returns to the stock during cleaning to wash the mop with hot water. The Flow 2 roller actually has flat sides like a conveyor belt, which Narwal says achieves more precise coverage than a cylindrical roller mop that hits the floor at any time.
In my testing, the Flow 2 consistently lapped up spills of various consistencies, from real liquids like red wine and milk to sludgier splatters like pancake batter, chunky pasta sauce, and most impressively, globs of dry syrup. Flow 2 is one of the few robot vacuums that flows with hot water, making it able to dissolve the syrup without leaving the bottom sticky. Hot water loosens the bonds making the oil thinner and harder to lift hard surfaces by force alone, so the Flow 2 handles oily or greasy liquids better than robots rolling in room temperature water. During dry cleaning, the Flow 2 does an excellent job on cat hair and small debris from rugs and kibble, cat litter, dirt, and crushed dried flowers on hard floors. I appreciate that the app allows three cleaning passes at once.
The Flow 2 is also a good cleaner simply because it knows what kind of mess it’s dealing with – its AI spill detection is the most accurate I’ve seen in 2026. Flow 2 captures a “before” image when it approaches debris larger than a few flakes or a single drop. After cleaning the entire area, Flow 2 returns to the dirty area for a deep cleaning of the area. My Narwal app was also full of pictures of extension cords, phone chargers, shoes, and random cat toys that the Flow 2 spotted in my house while I was cleaning, even if the item wasn’t directly in the way. No one has time to collect before sending a robot vacuum every single day, so it’s comforting to see direct evidence that the Flow 2 does, in fact, respond to obstacles in real time.