Current State of Stair-Climbing Robot Vacuums
No retail stair-climbing robot vacuum exists on the consumer market today. That fact surprises many buyers who have watched viral trade-show demonstrations. Manufacturers have shown several ambitious prototypes over the past two years. None has reached retail shelves. Every multi-story home still requires human intervention to clean different floors. Owners either carry their cleaner up the stairs or purchase separate vacuums for each level.
Engineering teams pursue two distinct physical designs to solve the stair problem. The first path builds an integrated self-climbing cleaning robot. This machine moves across standard floors on wheels and deploys robotic limbs to climb steps. The alternative design separates the cleaner from a dedicated transport carrier. In that setup, an external motorized caddy lifts a standard puck-shaped vacuum between levels. Both directions face serious mechanical challenges on household staircases.
Stair architecture varies widely across residential homes. Treads differ in depth, surface texture, and overhang. Open risers leave mechanical gaps that confuse optical sensors. Heavy carpet creates drag and unstable purchase for compact climbing tracks. Wood steps demand firm traction without scratching clear finishes. These physical realities have turned stair climbing into one of home robotics' toughest engineering problems.
Announced Models by Status
Hardware announcements in this category fall into three buckets: accessory carriers, standalone concepts, and unfinished crowdfunding campaigns. Each maker has chosen a different path to navigate elevation changes. Tracking their progress requires looking at real public filings and manufacturer statements rather than demo videos. At The Bot Scout, we track consumer robot specifications against verifiable release dates to separate actual availability from trade-show marketing.
Public pricing data remains scarce across the entire category. Only two projects have ever attached dollar figures to their hardware. MIGO quoted crowdfunding tiers before issuing refunds to backers. Eufy announced the price of its companion floor vacuum, but withheld the carrier cost. The remaining manufacturers have published no pricing guidance at all. Until production units receive retail price tags, multi-floor automation costs remain speculative.
| Model | Maker | Approach | Stair types stated | Price | Status (at the time of writing) |
|---|---|---|---|---|---|
| MarsWalker | Eufy | Four-arm track carrier | Straight, L-shaped, U-shaped | No public price | Unreleased; targeted first half of 2026 |
| CyberX | Dreame | Motorized carrier accessory | Not published | No public price | Unreleased; targeted early 2026 |
| Saros Rover | Roborock | Integrated wheel-leg robot | Straight, curved, carpeted | No public price | CES 2026 concept; no launch date |
| Zeus 60 | Mova | Mini vac elevator mechanism | Not published | No public price | Not yet on sale |
| Ascender | MIGO | Body-lift with outriggers | Regular, open-riser (≥150 mm tread) | $849 pledge / $1,499 planned retail | Yet to hit market; backer pledges refunded |
Eufy MarsWalker Carrier Mechanism
Engadget reported the Eufy MarsWalker announcement from the IFA 2025 technology trade show in Berlin. The company described the system as an external climbing carrier rather than an integrated vacuum. Four control arms adapt to each staircase, Eufy says. A continuous track-drive system grips each step surface securely during ascent and descent. It carries the vacuum up and down.
Eufy stated the carrier recognizes straight, L-shaped, and U-shaped stair configurations in homes. That geometric flexibility addresses common residential stair designs. However, the hardware works strictly with designated Eufy models. Third-party robot vacuums from other brands cannot dock inside the carrier frame.
The release window was stated as the first half of 2026, though Eufy has not published carrier pricing at the time of writing. The company introduced a companion floor cleaner, the Omni S2, scheduled for January 2026 at $1,600. Buyers must purchase that companion unit or another compatible model to use the carrier. Check Eufy's official robovac guides to verify current compatibility lists.
Dreame CyberX and the Mova Zeus 60
Dreame announced its CyberX climbing carrier with a target release window in early 2026. Like Eufy's design, CyberX functions as a separate carrier accessory for designated Dreame robot vacuums. It moves the vacuum between floors. Dreame has not announced retail pricing for the CyberX system at the time of writing. Detailed specifications regarding step geometry, battery runtime, and mechanical load limits also remain unpublished.
Competitive marketing has highlighted the mechanical gap between threshold crossing and genuine stair climbing. In an official blog post, Eufy stated that Dreame's robot can tackle thresholds up to 2 inches, but falls short when navigating stairs without external assistance. Crossing a raised doorway divider requires small suspension lifts. Climbing an entire flight of residential stairs demands an entirely different level of motorized leverage, weight distribution, and traction control.
Tech Advisor detailed another related concept in this category: the Mova Zeus 60. Tech Advisor described the Zeus 60 as a kind of mini robot vac elevator. It lifts a vacuum between floors. Mova has not put the Zeus 60 on sale at the time of writing. Mova has released no price or delivery date.
Roborock Saros Rover Wheel-Leg Design
Roborock demonstrated the Saros Rover at CES 2026 as a concept machine. Unlike carrier accessories, Saros Rover integrates its climbing mechanism directly into the primary cleaning chassis. It uses two jointed, articulated wheel-legs attached to a squared-off vacuum body. These motorized limbs allow the machine to roll across flat floors and step vertically onto risers. Roborock designed the robot to actively vacuum and clean while climbing each step.
Roborock claims the Saros Rover can climb straight, curved, and carpeted staircases without falling. The chassis also navigates slopes and multi-level floor thresholds. The machine keeps its main body level while climbing steps. It balances orientation using artificial intelligence algorithms paired with onboard motion sensors and real-time three-dimensional spatial data.
Roborock has announced no launch date and no retail price for the Saros Rover at the time of writing. The machine remains an experimental engineering concept. Roborock has announced no preorder or waitlist. Prospective buyers must wait for official production announcements before factoring Saros Rover into home purchasing decisions.
MIGO Ascender Crowdfunding History
The MIGO Ascender was the earliest high-profile attempt to build a consumer stair-climbing vacuum. New Atlas reported on the Ascender during its initial public unveiling in March 2024. The robot used an unusual multi-stage mechanical climbing sequence. It raised its central body relative to two outrigger wheel units, slid the main chassis onto the next tread, and then swung both wheel assemblies upward to rejoin the body.
MIGO published detailed hardware specifications during its promotional push. The Ascender claimed 9,700 Pascals of suction power alongside 17 Newtons of downward mopping pressure. A large 12,000 milliamp-hour battery targeted coverage up to 500 square meters on a single charge. The chassis stood 98 millimeters tall. The maker stated the mechanism supported regular and open-riser staircases with treads measuring at least 150 millimeters deep.
The Ascender has not reached retail. MIGO offered Kickstarter pledge tiers starting at $849, planning a retail price of $1,499. Eufy noted in its industry overview that the MIGO Ascender is yet to hit the market and backer pledges have been refunded.
Multi-Story Cleaning Options Today
Homeowners who need to clean multiple levels today must rely on existing multi-floor mapping vacuums. Modern floor cleaners store individual maps for several stories, but owners must physically carry them between levels. Eufy's S2 crosses double thresholds up to 4.2 centimeters and single thresholds up to 3.5 centimeters, handling rugs up to 2 inches thick. Other models like the S1 Pro and X10 Pro Omni map multiple floors efficiently. None of them can ascend stairs unassisted.
Bipedal and legged research machines show why consumer stair-climbing vacuums remain so difficult to commercialize at reasonable price points. Humanoids Daily reported on LimX Dynamics launching the TRON 2 research robot. LimX states the TRON 2 negotiates 20-centimeter steps in bipedal mode using visual motion planning. However, educational editions of that research platform cost $20,000 for the dual-arm model and $25,000 for the 3-in-1 system, as detailed in our LimX TRON 2 review.
Waiting for an unreleased stair-climbing robot vacuum makes little practical sense for multi-story homeowners in 2026. Two standard robot vacuums have a known price today; no carrier bundle does. Dedicated machines on separate floors clean simultaneously without mechanical transit delays or fall risks. If you experience sensor navigation errors on your existing equipment, consult our robot vacuum troubleshooting guide to keep multi-floor mapping operating reliably.
Bottom Line
No stair-climbing robot vacuum is available to buy today, and waiting for one to launch is an impractical strategy for multi-story homeowners. Eufy's MarsWalker and Dreame's CyberX carriers remain unreleased with no announced pricing, while Roborock's Saros Rover is strictly a CES 2026 concept. The MIGO Ascender is yet to hit the market and its backers were refunded. Buyers with multi-level homes should not delay purchasing; buying two conventional robot vacuums provides immediate multi-floor cleaning today at a predictable price. Our verdict would only flip if a maker ships a stair-climbing model with a published price and independent reviews of it on carpeted stairs.
If you need a dependable cleaning setup across multiple floors right now, compare proven hardware in our guide to the best robot vacuum models.
FAQs
Can any robot vacuum climb stairs?
No consumer robot vacuum can climb stairs at the time of writing. Prototype designs and carrier accessories have been shown by Eufy, Dreame, and Roborock at industry trade shows. However, none of these machines has shipped to retail buyers. Homeowners must manually carry their vacuums between floors.
When will the Eufy MarsWalker be released?
Eufy stated at IFA 2025 that the MarsWalker climbing carrier would launch in the first half of 2026. The companion Omni S2 vacuum was scheduled for January 2026 at $1,600. However, Eufy has published no standalone carrier price or confirmed shipping date at the time of writing.
How much will a stair-climbing robot vacuum cost?
No commercial stair-climbing vacuum has an official price tag. MIGO previously planned a $1,499 retail price for the Ascender before issuing refunds to backers. Eufy's compatible Omni S2 vacuum lists for $1,600 alone, and any carrier would be an added cost on top of that.
What happened to the MIGO Ascender?
The MIGO Ascender was a crowdfunded stair-climbing vacuum mop featuring outrigger wheels. It never reached consumer retail shelves. Eufy reported that the Ascender is yet to hit the market and backer pledges have been refunded. MIGO has published no shipping date since.
Does the Roborock stair-climbing robot exist?
Roborock showcased the Saros Rover as a concept robot at CES 2026. It features two jointed wheel-legs that let it roll across floors and climb steps while cleaning. Roborock has announced no retail price, preorder date, or production release schedule at the time of writing.
Do stair-climbing robot vacuums work on carpeted stairs?
Roborock stated its Saros Rover concept can navigate carpeted stairs using jointed wheel-legs and 3D spatial mapping. Eufy has published no carpet guidance for the MarsWalker. Because no production models have reached consumers, real-world carpet performance remains unverified across all designs.