Short answer: Yes — if you can absorb the upfront cost, this is the rare expensive gadget that pays for itself in recovered time and sanity.
Worth it for: Anyone with 800+ sq ft of floor space who cleans more than once a week Skip if: You're in a small apartment, or you have thick carpet everywhere Better alternative: Roborock Q Revo ($600) if you want 80% of the performance for 40% of the price
I spent $1,400 on a robot vacuum and I'm writing a positive review. I need you to understand how much that hurt my frugal sensibilities. But after 4 months of ownership, here's what happened: I haven't vacuumed or mopped my apartment once. Not a single time. The floors are consistently cleaner than when I was doing it manually. The robot runs at 2 AM, empties its own dustbin, washes its own mop pads, and refills its own water tank. I touch it maybe once a month to clean the brush roller. That's it.
When It IS Worth It
You have pets. Dog hair. Cat hair. The daily fur tumbleweeds that accumulate in corners and under furniture. The S9 MaxV runs daily and catches what would otherwise become a weekend chore. Pet owners consistently report this as the most life-improving gadget they've purchased — not because it's exciting, but because it eliminates a task you genuinely dread doing every 2-3 days.
You have hard floors and area rugs. This is where the S9 MaxV excels. It vacuums carpet, detects hard floors, deploys its mop pads with appropriate pressure, lifts the mop when it hits carpet again, and does this across your entire home without intervention. The mop pressure is strong enough to handle dried coffee drips. It won't replace deep-scrubbing in corners, but it handles 90% of daily maintenance flawlessly.
Your time genuinely costs money. The average person spends 30-45 minutes per cleaning session, 2-3 times per week. That's 2-3 hours weekly, or roughly 130 hours per year. At even $15/hour of your time, that's $1,950 in annual time value. The $1,400 robot pays for itself in under a year by that math. This isn't hypothetical — this is the actual math that made me pull the trigger.
When It Is NOT Worth It
You live in a small studio or one-bedroom. Under 600 sq ft, a robot vacuum is a luxury that saves maybe 10 minutes per cleaning session. A $150 cordless stick vacuum and 15 minutes of effort covers a small space fine. The S9 MaxV's intelligence and dock system are engineered for multi-room navigation, not 400 square feet of open floor plan.
Your entire home is thick carpet. The S9 MaxV's mopping — its premium differentiator — is useless on carpet. And while it vacuums carpet adequately, a dedicated upright vacuum with a beater bar does it better. Robot vacuums are best on hard floors with occasional rugs, not wall-to-wall carpet.
You enjoy the act of cleaning. Some people find vacuuming meditative. If cleaning is your therapy, don't outsource it to a robot. Fourteen hundred dollars for a machine that removes your relaxation ritual is a bad trade.
Who Should NOT Buy This
- Apartment dwellers under 600 sq ft — The robot costs more than the problem it solves in small spaces
- People who won't maintain it monthly — Even autonomous robots need brush cleaning and filter replacement. If you can't commit to 10 minutes of maintenance per month, the robot degrades fast
- Homes with lots of floor clutter — Shoes, cables, toys everywhere? The S9 MaxV has object avoidance, but it works around clutter rather than through it. Cluttered floors mean incomplete cleaning
- Budget-conscious shoppers — $1,400 is real money. If this would strain your budget, the Q Revo at $600 does nearly as well
Cheaper or Better Alternatives
| Alternative | Price | My Take |
|---|---|---|
| Roborock Q Revo MaxV | $599 | Best value robot vacuum-mop combo. 80% of the S9 |
| Dreame L40 Ultra | $1,299 | Comparable features, slightly weaker mop pressure |
| iRobot Roomba s9+ | $799 | Good vacuuming-only robot, no mop, aging platform |
| Ecovacs Deebot X5 | $999 | Good all-rounder but software is buggier |
| Cordless stick vacuum | $150-300 | Manual but effective. No dock, no maintenance subscriptions |
For a comparison with the legacy option, see our Roomba review. If you're evaluating floor cleaning more broadly, our Dyson Vacuum review covers the manual alternative.
What Annoys Me After 4 Months
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The dock is enormous. It's the size of a small nightstand. The dock washes mop pads, empties the dustbin, refills the water tank, and dries the pads with hot air — but it needs floor space, a power outlet, and proximity to a drain or water refill. Finding a place for this unit in a normal apartment requires actual planning.
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Replacement parts add up. Mop pads ($30), side brushes ($15), filter ($20), main brush ($25) — spread across a year, you're spending $80-120 on consumables. Nobody tells you about the running costs when they're raving about the purchase price.
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It gets confused by dark rugs. The cliff sensors occasionally mistake dark carpet for a cliff edge and avoid it entirely. I had to disable cliff detection for one room. In 2026, a $1,400 robot shouldn't be afraid of a navy blue rug.
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The app wants too much. Roborock's app requires account creation, phone number verification, and sends push notifications about cleaning reports you never asked for. A vacuum shouldn't need a social media-style onboarding flow. I just want the floors clean.
What the Cleaning Math Actually Looks Like
Most people evaluate robot vacuums wrong. They compare the $1,400 price to the $0 cost of doing it themselves and conclude it's a ripoff. But manual cleaning isn't free — it costs time, and you're already spending that time.
Here's the calculation nobody does: track how many hours you spend vacuuming and mopping per month. Multiply by 12. Multiply by what your time is honestly worth — not your salary, but what you'd pay someone else to do it for you. For most people in developed markets, a cleaning service costs $100-200 per visit. The S9 MaxV runs daily for a one-time cost of $1,400 plus $100/year in parts.
Over a 3-year lifespan (which is conservative — these robots last 4-5 years with maintenance), you're paying roughly $550/year for daily automated cleaning. A biweekly cleaning service at $150/visit costs $3,900/year. The robot is cheaper than human cleaning by a factor of seven, and it runs seven days a week instead of every other Tuesday.
The psychology of the purchase price blinds people to the running economics. $1,400 upfront feels extravagant. $1.50 per day for a clean floor feels invisible. They're the same thing.
Final Verdict
Worth it if your home is large enough to justify it. The Roborock S9 MaxV Ultra is expensive, massive, and genuinely worth the money for homes over 800 square feet with mixed flooring. It's the first robot vacuum-mop that I'd describe as "set and forget" without the quotes being sarcastic.
For smaller spaces, get the Q Revo at $600. For large homes with pets, hard floors, and busy schedules, the S9 MaxV Ultra is one of the few $1,400 purchases I'd recommend without caveats. It replaces a chore you actually hate. That's the highest bar any product can clear.
FAQ
Is the Roborock S9 MaxV Ultra better than a Roomba?
For combined vacuum + mop: significantly yes. For vacuum-only on carpet: Roomba's flagship is slightly better at deep carpet extraction. But the S9 MaxV's ability to vacuum AND mop in one pass, then auto-wash its pads, makes it a more complete product.
How often do you need to maintain it?
Empty the dock's dirty water tank every 1-2 weeks, refill clean water weekly, and clean the main brush monthly. Replace mop pads and filters every 3-4 months. Total active maintenance: about 10 minutes per month.
Can it handle stairs?
No robot vacuum handles stairs. You'll still need a handheld or stick vacuum for stairs. This is the one thing you can't automate yet.