Roborock QV 35S

Roborock QV 35S

Ten thousand pascals of suction for under $600 sounds too good to be true—but the Roborock QV 35S actually delivers on that promise. Released in early 2025, this robot vacuum-mop combo has carved out an interesting niche: flagship-level cleaning power at mid-range prices, with some deliberate compromises that keep costs down.

Here’s what you need to know before buying.

The Value Proposition

The QV 35S essentially replaces the older Qrevo Plus in Roborock’s lineup, and the numbers tell an interesting story. You’re getting 10,000 Pa of suction (compared to the Qrevo Plus’s 7,000 Pa) while paying $150 less. The catch? No FlexiArm for corner reach, and no heated water features. Whether that trade-off works for you depends entirely on your priorities.

Current pricing hovers around $600-750 USD at major retailers including Amazon, Best Buy, and Walmart. European buyers can expect similar pricing at €699.99 or £699.99.

Cleaning Performance

Suction Power

That 10,000 Pa HyperForce suction is the headline feature—25% stronger than the entry-level QV 35A. The single spiral-design rubber brush includes anti-tangle technology, though “anti-tangle” deserves an asterisk. Pet owners report that hair still wraps around the brush weekly, requiring manual removal. The spiral design does help by directing hair toward the ends where it’s easier to clean, but don’t expect a completely maintenance-free experience.

Navigation

PreciSense LiDAR handles mapping and navigation, scanning 360 degrees to create efficient cleaning routes. The robot stores up to four floor plans with automatic multi-floor detection, which works well for multi-story homes.

The bigger question is obstacle avoidance, and here’s where the QV 35S shows its price-point limitations. The Reactive Tech system uses a structured light camera to spot objects 3cm and taller. Smaller items? The robot runs right over them. Professional testing confirms it regularly drives through cables, socks, and small toys despite marketing claims about obstacle detection.

If your floors typically have phone chargers or kids’ toys scattered around, you’ll need to pick up before each run.

Filtration

The onboard filter is E11-equivalent, capturing about 95% of particles. That’s fine for general dust and dander, but it’s not true HEPA. The dock’s 2L auto-empty bags do contain a HEPA-equivalent filter (99.9% efficiency), so most trapped particles stay contained there.

Both the robot filter and dock bags are washable and can even go in the dishwasher, extending their useful life to 3-5 years. For severe allergies, though, competitors like iRobot offer higher-grade HEPA filtration throughout the system.

The Mopping System

Here’s where Roborock made a clear cost-cutting decision: the dock washes and dries the spinning mop pads, but only with room-temperature water. No heated washing, no hot air drying.

For everyday dust and light dirt on hardwood or tile, this works perfectly fine. The 3-stage cleaning cycle (wash, spin, dry) keeps pads reasonably fresh between uses. But if you’re dealing with greasy kitchen floors or live in a humid climate where mildew is a concern, the cold-water-only approach has real limitations.

You’ll also need to empty the dirty water tank manually every few runs—there’s no plumbing connection option.

App and Smart Features

The Roborock app is genuinely excellent. With 4.8 stars from over 586,000 iOS reviews and 4.6 stars from 309,000+ Android reviews, it consistently ranks among the best in the industry.

Features include real-time tracking, 3D mapping, room-specific scheduling, and voice control through Amazon Alexa and Google Assistant. No Matter or HomeKit compatibility, though, if you’re deep in the Apple ecosystem.

The Support Problem

Here’s the elephant in the room: Roborock’s customer support has a documented reputation problem. Trustpilot reviews describe 2-6 week response times, disputed warranty claims, and general unresponsiveness.

The smart move is buying through Amazon rather than directly from Roborock. You get 30-day returns with no hassle, plus credit card chargeback options as a safety net. The 1-year warranty covers defects in materials and workmanship but excludes consumables like filters, brushes, and mop pads—standard for the industry, but worth knowing.

Ongoing Costs

Running costs stay reasonable:

Item	Price	Replacement Frequency
Auto-Empty Bags	$15-20 each	Every 7 weeks (~$100-150/year)
Main Brush	~$22	Every 6+ years
Side Brush	~$20	Every 200+ hours
Filters (2-pack)	$32.99	Every 3-5 years

The bags represent your main ongoing expense. Everything else lasts long enough that you might forget replacement parts exist.

Physical Specs

• Dimensions: 35.2 × 34.7 × 10.5 cm (height: 9.65 cm—fits under most furniture)
• Weight: 15.9 lbs (36.7 lbs shipping weight with dock)
• Threshold climbing: 20mm
• Dustbin: 350ml
• Battery: 5200 mAh, 180 minutes on balanced mode (closer to 100 minutes on max suction)
• Fast charging: approximately 30% quicker than the S7 model

Known Issues

Beyond the obstacle avoidance gaps mentioned earlier:

Hair tangling remains an issue despite anti-tangle marketing. Weekly brush cleaning is realistic for pet owners.

The 350ml dustbin fills up faster than you’d like. For larger spaces, scheduling room-by-room cleaning helps prevent mid-run interruptions.

No dirt detection sensor means the robot can’t automatically remop visibly dirty areas—it just follows its programmed routine.

WiFi disconnections affect roughly 5% of users, requiring occasional app reconnects.

Who Should Buy This

The QV 35S makes sense for homes with mostly hard floors spanning 1,000-2,500 square feet. One or two moderately-shedding pets work fine; a house full of huskies would be pushing it. If you’re willing to do a quick floor sweep before each cleaning run to remove cables and small objects, the obstacle avoidance limitations won’t bother you much.

The value proposition really shines for buyers who want 10,000 Pa suction without paying $1,000+ for a flagship model.

Who Should Look Elsewhere

Skip this one if you have multiple heavy-shedding pets, floors covered in cables and clutter, severe allergies requiring true HEPA filtration, or greasy kitchen floors that need hot water mopping. Anyone who values responsive customer support should also think twice—or at minimum, buy through a retailer with strong return policies.