Suction figures on this page run from 1,400 to 15,000 pascals, and if your home has no carpet, almost all of that range is irrelevant to you. Suction is a carpet specification: it exists to drag embedded grit out of pile. Crumbs on a bare floor do not fight back. The arms race you are being sold is for a surface you do not own, and the number that actually matters is barely advertised.
On hard floors the whole job is the mop, and specifically whether it puts clean water down or pushes yesterday’s dirty water around. That is a mechanism question, not a power question, and the answers here differ enormously.
At a glance
| Robot | Standout feature | Price tier | Link |
|---|---|---|---|
| ZCWA | Cheapest here; its own listing disagrees on suction | Budget | |
| MANVN Ultra-Slim | 2.87 inches tall; gets under the furniture | Budget | |
| Tikom G8000 Max | 150 minutes; publishes bin and tank sizes | Budget | |
| iRobot Roomba 105X | Best seller; a pump keeps the pad evenly wet | Mid-range | |
| MONSGA | LiDAR mapping and 90 days of self-emptying | Mid-range | |
| iRobot Roomba 505X | The dock washes and heat dries the pad | Premium | |
| eufy C28 | A spinning roller fed continuous fresh water | Premium | |
How to choose for hard floors only
The suction number is sold to carpet owners
Read eufy’s own listing and it makes the point for you: its 15,000 pascals of turbo suction is described as lifting pet hair, dander and fine dust from carpet. That is what the number is for. On tile, laminate or wood there is no pile holding the dirt down, so the debris comes up at a fraction of that. Tikom’s 5,000 pascals is already more than a bare floor requires. If every room in your house is hard, the suction figure is the specification you can most safely ignore, which is inconvenient because it is the one printed largest.
A pad drags; a roller does not
This is the real fork. The cheap robots here trail a damp cloth behind them, which is fine for the first room and progressively less fine after that, because the cloth picks up dirt and then redistributes it. The expensive ones fix that mechanically. eufy uses a 28cm HydroJet roller with 24 water ports spinning at 270 RPM, which is nine rotations a second with fresh water fed continuously onto it, so the surface touching your floor is always clean. iRobot’s SmartScrub uses a micro-pump to keep its pad evenly moist rather than soaked then dry.
What happens to the pad afterwards decides whether you use it
A wet mop pad sitting in a dock in a warm house smells within a day, and a robot you have to hand-wash after every run is a robot you stop running. Two machines here solve it. iRobot’s AutoWash Dock on the 505X empties debris, then washes, refreshes and heat dries the pad, and the drying is the half that matters. eufy’s All-in-One Station auto-washes and auto-empties into a 3L bag. Everything else on this page leaves you a damp cloth to deal with, which on a hard-floor-only home you will be dealing with often.
Rug avoidance is a feature you are not using
Much of what the premium end charges for is intelligence about carpet: detecting it, lifting the mop over it, mapping which rooms have it. On a hard-floor-only home, none of that earns its keep. What is still worth having is obstacle avoidance for the things that are on your floor: iRobot’s PrecisionVision AI on the 505X recognizes cords, socks and pet accidents and steers round them, which matters far more than carpet logic when a mop is involved. A robot that mops a pet accident across a hallway has made your day worse.
Read the suction figure twice
ZCWA’s title says 2,000 pascals and its own feature list says 1,400. Those are different machines and only one of them is in the box. It is not the only sloppiness at this end: another robot in this category repeats the same bullet point twice, and several cheap brands quote identical figures to each other, 2,300 pascals across 1,290 square feet on the same app. None of that makes them bad robots. It does mean the numbers at the cheap end are not doing the work you think they are.
Tank size is the hard-floor runtime
For vacuuming, battery life is the limit. For mopping, the water tank is, and it runs out long before the battery. Tikom publishes both, a 450ml dustbin and a 300ml tank, and MONSGA quotes 460ml of water. That is the number that decides whether your kitchen and hallway get done in one pass or whether you are refilling halfway. Most listings here talk about runtime in minutes and stay quiet about milliliters, which for a hard-floor home is the wrong way round.
ZCWA
The cheapest robot here, and the listing is worth reading carefully because it contradicts itself: the title says 2,000 pascals and the features say 1,400. On a hard floor either is arguably enough, which is the saving grace, and it is still a strange thing to get wrong about your own product. What you do get is genuinely useful: 3D obstacle avoidance, which matters more than suction when a wet pad is involved, app and voice control with schedules, two intensity levels for both mopping and vacuuming, and 100 minutes of runtime with self-charging.
Pros:
- Cheapest robot on this page
- 3D obstacle avoidance; more useful than suction here
- Two intensity levels for mopping and vacuuming
- App and voice control with scheduling; 100 minute runtime
Cons:
- Title says 2,000 pascals, features say 1,400
- Trails a pad; no self-cleaning or drying
- No water tank size published
Best for: a small flat and a low budget, if the pad is no trouble.
MANVN Ultra-Slim
The only robot here that solves a problem the others cannot: at 2.87 inches tall it goes under the furniture the rest bounce off. Under a sofa, under a bed frame, under the kickboard gap of a kitchen island, which on a hard floor is exactly where the dust migrates to and exactly where you never sweep. It is aimed at hard floors by name, with 2,300 pascals, which MANVN plainly frames against the 1,500 typical of basic robots rather than against a flagship. 3D sensors handle stairs and furniture, and a 2500mAh battery gives 100 minutes across a stated 1,290 square feet.
Pros:
- 2.87 inches tall; reaches under furniture nothing else here can
- Aimed at hard floors explicitly
- Publishes battery, runtime and coverage together
- 3D sensors for stairs and furniture; real suction comparison
Cons:
- Quotes figures identical to other cheap brands here
- Trails a pad; no washing or drying
- Barely sells; no water tank size given
Best for: the dust under the sofa, which is where it goes on hard floors.
Tikom G8000 Max
The best-documented cheap robot here, and the details it publishes are the right ones. A 450ml dustbin and a 300ml water tank, stated, which is the figure that actually decides how much floor gets mopped before you refill, and almost nobody else on this page will tell you. Five thousand pascals is already more than a bare floor needs. Runtime is up to 150 minutes in quiet mode, the longest here, and it auto-recharges. Four control methods, app, remote, voice and a button on the machine, which matters in a house where not everyone wants an app.
Pros:
- Publishes both dustbin and water tank: 450ml and 300ml
- 150 minutes in quiet mode; the longest runtime here
- 5,000 pascals, which is plenty for hard floors
- Four control methods including a physical button
Cons:
- Trails a pad; no self-cleaning dock
- No mapping or obstacle camera
- Sells modestly
Best for: the most mopping per refill at the cheap end.
iRobot Roomba 105X
The best-selling robot here, and the feature that earns it on hard floors is the one iRobot mentions almost in passing. SmartScrub uses a micro-pump to keep the mop pad evenly moist, rather than the usual arrangement of a tank slowly wetting a cloth that starts soaked and finishes dry. Even moisture across a whole floor is the difference between mopping and smearing. The AutoEmpty Dock handles debris for up to 75 days into a sealed bag, so the only thing you touch is the pad. It vacuums and mops in one pass.
Pros:
- The best-selling robot on this page
- SmartScrub micro-pump keeps the pad evenly moist, not soaked then dry
- AutoEmpty Dock; 75 days of hands-free debris in a sealed bag
- Vacuums and mops in a single pass
Cons:
- The dock empties debris but does not wash the pad
- No mapping or obstacle camera at this level
- The 70x suction claim is aimed at carpet owners
Best for: most hard-floor homes, with the pad wet where it should be.
MONSGA
The cheapest robot here with real navigation. LiDAR scans and maps the house in real time and then cleans row by row in a systematic pattern, rather than the random bouncing the budget machines do, and on a hard floor that is genuinely the difference between a mopped room and a mopped diagonal stripe. Five-map memory covers a house over several stories. It publishes a 460ml water tank, which is the useful number, empties into a 4L bag for up to 90 days, the longest here, and pairs 8,000 pascals with a dual anti-tangle design.
Pros:
- LiDAR mapping; cleans row by row rather than at random
- Systematic coverage is what a mop actually needs
- Publishes a 460ml water tank; 4L bag for up to 90 days
- Five-map memory for a multi-story house
Cons:
- The dock empties but does not wash or dry the pad
- 8,000 pascals is a carpet number you will not use
- Sells poorly; a little-known brand
Best for: systematic coverage, which is what mopping needs most.
iRobot Roomba 505X
The dock is the product. AutoWash empties debris for up to 75 days, then washes, refreshes and heat dries the mop pad, and the drying is what stops a damp cloth going sour in a warm hallway between runs. That single feature is the difference between a mop you use twice a week and one you stop bothering with. DualClean Mop Pads and PerfectEdge get into the places dirt actually collects, and PrecisionVision AI recognizes cords, socks and pet accidents and steers around them, which with a wet pad on board matters more than any suction figure.
Pros:
- The dock washes and heat dries the pad; nothing else here dries
- 75 days of hands-free emptying alongside
- PrecisionVision AI avoids cords, socks and pet accidents
- DualClean pads with PerfectEdge for edges and corners
Cons:
- Costs more than double the best-selling Roomba here
- Much of the intelligence is carpet logic you will not use
- Sells well behind the cheaper 105X
Best for: never touching a wet mop pad again.
eufy C28
The only machine here that mops the way a person would. A 28cm HydroJet roller carries 24 water ports and spins at 270 RPM, which is nine rotations every second with fresh water fed continuously onto the surface touching your floor, so it scrubs with clean water rather than pushing a dirty cloth around. eufy calls it real mopping rather than wiping, and on a hard-floor-only home that is precisely the distinction. A DuoSpiral brush handles hair up to 30cm without wrapping, and the All-in-One Station auto-washes and empties into a 3L bag.
Pros:
- HydroJet roller with 24 water ports at 270 RPM; continuously fresh water
- Scrubs rather than wipes; the real hard-floor answer
- All-in-One Station auto-washes the roller and empties to a 3L bag
- DuoSpiral brush handles 30cm hair without tangling
Cons:
- The most expensive robot here
- Its 15,000 pascals is explicitly sold for carpet
- A roller and a station mean more parts to maintain
Best for: a house of hard floors mopped properly, not wiped.
The verdict
If every floor in your house is hard, ignore the suction figures. They are a carpet arms race and eufy’s own listing says so. Judge these on the mop: how the water reaches the floor, and what happens to the pad afterwards.
Best overall: iRobot Roomba 105X. The best seller here and the reason works on hard floors specifically: SmartScrub runs a micro-pump to keep the pad evenly moist, instead of the usual soaked-then-dry cloth that mops the first room and smears the third. The AutoEmpty Dock takes debris off your hands for up to 75 days into a sealed bag. You still wash the pad yourself, and at this price that is a fair trade.
Best value: Tikom G8000 Max. The only cheap robot that publishes the number a hard-floor home actually runs out of: a 300ml water tank, alongside a 450ml dustbin. Everyone else quotes minutes, and it is milliliters that stop you. Five thousand pascals is already more than a bare floor needs, 150 minutes is the longest runtime here, and there is a physical button for people who will not use an app.
Best premium: eufy C28. The only machine on this page that mops rather than wipes. A 28cm roller with 24 water ports spinning at 270 RPM is fresh water arriving continuously at the surface touching your floor, which is the entire difference between cleaning a hard floor and redistributing it. The station washes the roller and empties the bin. Its headline 15,000 pascals is for carpet you do not have.
FAQ
How much suction do I need on hard floors?
Far less than the page advertises. Suction exists to pull grit out of carpet pile; a bare floor holds nothing down. eufy’s own listing describes its 15,000 pascals as lifting dirt from carpet. Tikom’s 5,000 is already more than enough. It is the easiest number here to ignore.
What actually matters instead?
The mop mechanism. A trailing pad picks up dirt and then spreads it; a roller fed with fresh water does not. eufy’s spins at 270 RPM with 24 water ports. iRobot’s SmartScrub keeps the pad evenly wet with a pump rather than letting it go from soaked to dry across your hallway.
Do I need a self-washing dock?
It decides whether you keep using the robot. A damp pad in a dock turns unpleasant fast, and hand-washing it after every run is how these end up unplugged. Only the Roomba 505X washes and heat dries; eufy’s station auto-washes. Everything else leaves the pad to you.
Is rug avoidance worth paying for?
Not in a house without rugs, and a lot of premium intelligence is exactly that. What is still worth having is obstacle avoidance for things on the floor: the 505X’s PrecisionVision AI steers round cords, socks and pet accidents, which matters far more when the machine is carrying a wet pad.
Why do the cheap ones quote such different numbers?
Because the numbers are loose. ZCWA’s title says 2,000 pascals and its features say 1,400. Several cheap brands here quote identical figures to one another, and one repeats the same bullet twice. They may all clean perfectly well; the specifications are just not doing much work.
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