Roborock

S4 Max

Roborock S4 Max

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Overall

#112 in

Robot Vacuums

according to Reddit Icon Reddit

Sentiment score66% positive
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6

Top Pros

Top Cons

Last updated: Jun 16, 2026

Reddit Reviews

Reddit Iconfishypants
8 months ago

upvoting this. Love my roborock, just bought a second. My S4 Max has been going strong for like 3-4 years now, hell, maybe longer.

Reddit IconHistorical-Low235
29 days ago

Lo que describes con la S4 Max es exactamente el dilema clásico: el robot no te ahorra trabajo, te cambia el trabajo. En vez de limpiar el suelo, limpias para el robot. Para muchos pisos pequeños o con diseño irregular, el balance no sale positivo. Voy al hilo por partes: **Valetudo y flasheo** En 2026 está bastante más difícil que hace 3-4 años. Roborock ha ido cerrando los vectores de acceso root en generaciones recientes. Los modelos flasheables con Valetudo son prácticamente los mismos de siempre (S5 Max, S6, algunos Q-series con firmware antiguo), y la comunidad ha crecido pero los robots nuevos con buenas specs de fregado ya no son flasheables. Si Valetudo es requisito, tienes que comprar hardware viejo o de segunda mano conscientemente, no el modelo que más te convenza por specs. **Fregado** Aquí sí ha habido salto real. Los sistemas con mopa elevable (Dreame L40s, Roborock Q Revo Pro, gama alta en general) ya no arruinan alfombras al fregar —la mopa sube físicamente al detectar la alfombra. El fregado con agua caliente y autolimpieza de mopa (Dreame L10s Ultra Gen2, Roborock S8 MaxV) es cualitativamente diferente a la mopa húmeda fija de tu S4. Si el fregado te importa, el salto se nota. **Caca de mascota** Ha mejorado mucho la detección, pero no está resuelta. Los modelos con cámara + IA (Roborock S8 MaxV Ultra, Dreame L40s con su cámara frontal) tienen detección de objetos que incluye heces con bastante fiabilidad en condiciones normales. El problema sigue siendo la iluminación: en zonas oscuras o de noche sin luz, la cámara no ve bien. Algunos usuarios con gatos usan la detección de zonas restringidas para bloquear el arenero. No es perfecto pero es mucho mejor que el S4. **Pelo de gato en alfombrillas** El problema con las alfombrillas de baño es la succión combinada con el borde —el robot pasa por encima, succiona, pero la turbulencia redistribuye el pelo al borde. Los robots con sistema de cepillo sin enredo (Dreame usa "DuoDivide", Roborock "FlexiArm") mejoran el pelo en cepillos pero no resuelven el problema de las alfombrillas específicamente. Para superficies pequeñas con mucho pelo, ninguno lo resuelve limpio. La solución más práctica sigue siendo pasar la mano o un rodillo antes de que entre el robot. **Precio por unidad para cada piso** No se han abaratado en la gama útil. Los robots que realmente mejoran lo que describes —detección de obstáculos decente, fregado con mopa elevable, autovaciado— siguen estando entre 400 y 700 €. La gama de 150-250 € ha mejorado en mapeo pero sigue teniendo las limitaciones de siempre en fregado y obstáculos. Para 2.5 cuartos con diseño irregular, el argumento económico de tener dos unidades no sale salvo que uno sea un modelo básico solo para barrer en planta secundaria. La pregunta real que me parece que tienes debajo es si tiene sentido actualizar. Con una S4 Max en un piso pequeño con gato y alfombrillas, yo esperaría a tener un espacio donde el robot pueda trabajar con menos preparación previa —o me plantearía un modelo con detección de obstáculos de verdad (cámara) antes que uno con mejor fregado, porque el problema del gato va antes que el de la mopa.

Reddit IconIntro24
6 months ago

I'm in the Roborock ecosystem and I've been mostly happy with them. Started with an S4 Max that's now semi-retired and got a Q5 Pro last year because it seemed be the least mop-focused option available. In my opinion, the lower-end mops are useless and I don't even really care about the high-end mops so I don't want to pay for all of those bells and whistles. I would, however, be perfectly willing to pay good money for a vacuum-only model with the more advanced obstacle avoidance and the other non-mop features. At the moment, all high-end versions with the cool non-mop features also have high-end mops and I simply can't justify buying them because I don't care about the mop. I would gladly play for a high-end non-mop Roborock though. It would just need to be less expensive than the mop-equipped equivalent or have better vacuum performance/features in place of the mop. For example, I would be willing to pay at least $400 for something with the high-end obstacle avoidance, with or without a self-empty station. I suspect they would only sell such a model with self-empty but I just want the high-end non-mop features.

Reddit Iconkmarie630
about 2 months ago

I was gifted the S4 Max years ago, and we have loved it, but unfortunately it's about at the end of its life... battery life, occasional problems getting more frequent, it's louder now (which bothers the dog), etc. After looking at the new models, there are SOOO many, I don't understand how to choose. I'm really surprised how many including mopping... I don't really trust a robot vacuum to with water on my wood floors. It might leave too much water, or leak, and the floor would warp 1. For those of you with wood floors, is this not a concern for you? 2. How does it keep the rugs/carpet dry when it's mopping, it does separate cycles? 3. Do you have to replace some pad after each mopping session? 4. If I have fairly dirty floors due to kids, pets, shoes, can I expect this mopping to work as well as normal mopping methods? If I don't plan to use mopping features, it looks like there's a single model for sales that doesn't do mopping (Q5 Pro), is that right?

about 2 months ago

I have opened it up in the last year to clean it, pretty close to all the way if not completely. Talk about dog hair! Is this the battery I should buy? https://a.co/d/0hYmCoxX Tell me about Valetudo, how does one use that, is it like a different app?

Reddit Iconlance_w00t
7 months ago

I like the Roborock brand. I bought a S4 Max 4 years ago and it still works. Recently I bought a Q10 S5+ (wet mop and vac) and it's working pretty good.  My first robovac was a Eufy 11S in 2019. It was a good entry level robovac (~$100) but frequently got stuck around the house. I still have it and it still works, surprisingly, but the battery needs to be replaced; it only has about 20 mins of life at max suction. I frequent this website for reviews and testing of the robovacs https://vacuumwars.com/vacuum-wars-best-robot-vacuums/ 

Reddit IconLemonio
5 months ago

Hello! Thank you for the help. I currently have a Roborock S4 Max and am interested in buying another Roborock model. Might move the current one to a different floor of the house. I don’t use the S4 Max as often as I’d like because it frequently bumps into low items on the floor—like our cat’s food tray, cat toys, etc... That means I have to pick things up beforehand and sometimes monitor runs to make sure it doesn’t drive over something on the floor. Also, a lot of cat hair gets tightly wrapped around the spinning fan thing. Ideally, I’m looking for a model with **reliable low obstacle avoidance** so I can start a clean (or run it on a schedule) while I’m out of the house without needing to clear the floor first. I haven’t researched self-emptying or mopping much. If a vacuum without them will get the job done great I don't need them, but if I need those features to get reliable floor item avoidance/better cat hair handling, I’m open to those features. Probably flexible with budget. Thank you!

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