Late on a Tuesday evening, after a ten-hour sprint of refining microcopy for a fintech onboarding flow, I was sitting on the floor of our living room leaning against the sectional. Murph, our husky mix, was doing that thing where he shakes his entire body, sending a literal cloud of white undercoat onto the thick, charcoal-grey shag rug I bought before I knew any better. In the corner, the old Roomba i3—the one that met its end on the basement steps back in March 2024—felt like a ghost of failures past. I looked at the rug, then at Murph, then at the Roborock S8 Pro Ultra sitting in its dock, and I just sighed. If this bot didn't handle the high-pile fibers, I was going to have to start charging Murph rent for the amount of manual vacuuming he requires.
Before we get into the weeds of brushroll torque and app navigation, a quick heads up: the robot vacuum brands and smart-home detectors I link to here send me a commission if you click through and buy through one of my links. I earn a commission when you grab a Roomba or a Roborock from one of these pages at no extra cost to you. I’ve personally tested these in my own 1920s bungalow, weighed the dustbins on my kitchen scale, and lived through the 3 a.m. app alerts. These picks are based on what actually survives Murph and Beans (our senior beagle), not a marketing spec sheet.
The Bungalow Problem: High-Pile Rugs and Steep Transitions
Living in a 1920s craftsman bungalow means dealing with original oak floors and some truly aggressive transitions. When we moved in, I laid down a few high-pile carpets to dampen the echo, not realizing I was creating a series of obstacles that would defeat 90% of the robot vacuums on the market. In the world of floor care, high-pile rugs are defined by fibers exceeding 3/4 of an inch in length. To a robot, that’s not just a floor; it’s a swamp. Most bots either see the height as a "cliff" and refuse to climb it, or they get their side brushes tangled in the fringe like a bad UX loop you can’t exit.
When I first brought the Roborock S8 Pro Ultra into the mix last November, I was skeptical. I’d already seen the iRobot Roomba j7+ do a decent job with pet hair, but it struggled with the sheer density of the shag in the living room. The Roborock, however, has a specific design intended for this: dual rubber rollers and a mop that’s supposed to lift itself out of the way. I started keeping my dustbin tally—a habit I’ve had since that first Roomba died—and noticed right away that the S8 was pulling significantly more weight in husky fur out of the rug fibers than the mid-range bots I’d tested earlier in the year.
Onboarding and the WiFi Pairing Struggle
The UX of setting up a new bot is usually where my patience evaporates. The Roborock app onboarding feels a bit like a Sephora checkout flow—dense, colorful, and constantly trying to show you things you didn't ask for. It’s feature-dense to the point of being its own learning curve. However, it did beat the Roomba j7+ in one key metric: mapping. While the Roomba took three full runs to stabilize the floor plan of our main level, the Roborock locked it in by run two. It actually understood the layout of the sectional and the dog beds before I even had to go in and name the rooms.
That said, I did have a classic smart-home meltdown during the initial setup. I spent about twenty minutes fumbling with the pairing before I realized my phone was locked to the 5GHz network. Like the X-Sense Smart Smoke and CO Detector I installed in the hallway, the Roborock requires a 2.4GHz WiFi frequency to pair. Once I switched the phone over, it was fine, but it’s the kind of "hidden requirement" that drives me crazy. If you're looking for a bot that plays nice with older home layouts, you might also want to check out my LG CordZero Robot Vacuum Review for Older Homes with Hardwood Floors, as that model handles the hardwood-to-rug transition with a bit more grace in its physical design.
The Mop-Lift Feature: A Turning Point
The real test happened in mid-March, right after the first heavy snow started melting and the dogs were dragging in Indianapolis slush. Usually, with a hybrid bot, you have to choose: do I let it mop and risk a damp rug, or do I skip mopping entirely? The S8 Pro Ultra has a mop-lift feature that actually works. As it transitioned from the hardwood kitchen to the living room rug, I watched the pad retract. Sam, who usually tunes out my vacuum testing, actually stopped mid-sentence to point at the floor. "Wait, did it just pull its feet up?" he asked. It did. It climbed the rug edge without spinning its wheels in a "distress" circle—a common failure mode for the older LG CordZero Robot models I’ve tried.
There is a specific, heavy "thunk" the Roborock's dock makes late at night when it switches from suctioning the dustbin to starting the mop-washing cycle. It’s loud enough that you’ll want to schedule it when you’re not in the room, but it’s the sound of a bot that’s actually maintaining itself. Compared to the PuroAir HEPA 14 Air Purifier we keep in the bedroom—which runs at a near-silent 28 dB in sleep mode—the Roborock dock is a beast. But for the relief of not having to manually unwind Murph’s hair from a brushroll every weekend, I’ll take the noise.
The Measurable Tradeoff: Battery vs. Suction
Here is the part the marketing materials don't tell you: high-pile rugs are battery killers. When the S8 Pro Ultra detects carpet, it kicks into "Max+" suction mode. The enhanced deep-cleaning agitation on those thick fibers increases motor power consumption significantly compared to the battery life depletion I observed on the hard kitchen floors. On hardwood, the bot is efficient and quiet. On the rug, it’s a power-hungry monster. If you have a house full of high-pile carpet, don't expect the "up to 180 minutes" battery claim to hold water. In my experience, a full cleaning of our rug-heavy living room and hallway eats through the battery about 30% faster than a similar square footage of hardwood.
For pet owners, this is still the best-case scenario. Because it uses a true HEPA style filtration system (though for the best air quality, I still recommend a dedicated unit like the PuroAir HEPA 14), it isn't just kicking dander back into the air. The HEPA 14 grade filters are medical-grade, capable of removing 99.99% of particles down to 0.1 microns, which is a lifesaver when Beans is having a particularly dander-heavy week.
Comparing the Heavy Hitters
If you're debating between the big names, here is how the data from my kitchen-scale dustbin tally looks across the three most recent bots I've tested for high-pile performance.
| Feature | Roborock S8 Pro Ultra | LG CordZero Robot | iRobot Roomba j7+ |
|---|---|---|---|
| Rug Transition | Excellent (Mop Lift) | Good (High Clearance) | Average (No Mop Lift) |
| Husky Hair Pickup | High (Dual Rollers) | High (Triple Suction) | Moderate (Single Roller) |
| App Complexity | High (UX Overload) | Low (Streamlined) | Moderate (Subscription Nags) |
| Mapping Speed | 2 Runs | 2 Runs | 3 Runs |
While the LG CordZero Robot is my Editor's Pick for overall ease of use, the Roborock wins on the specific edge case of "I have rugs I don't want to get wet." If you're tired of the app games, you can read more about my experience in this Roomba j7 Plus vs Roborock S8 Pro Ultra for Pet Hair comparison.
Final Verdict from the Bungalow
By early June, after six months of daily runs, the Roborock has become the only bot I trust to run while I’m actually working. I don't have to listen for the "stuck" chirp from under the sectional anymore. Yes, the app is a mess of menus, and yes, it’s a massive investment—about three hundred dollars more than the LG CordZero—but for the specific nightmare of husky fur on high-pile rugs, it’s the only thing that’s kept my kitchen scale tally consistent.
If you have a 1920s house with those thick transitions and a dog that sheds like it's his job, the Roborock S8 Pro Ultra is the one I’d tell you to buy. Just make sure you have your 2.4GHz WiFi password handy and be prepared for the "thunk" of the self-cleaning cycle. It’s the sound of you not having to vacuum that rug yourself for the third time this week. It isn't perfect, and the battery drain on carpet is real, but it's the first bot that hasn't made me want to go back to a manual upright.