My Tracking Notes on the Great Shed-Off: Why the LG CordZero Finally Beat Out My Old Roomba

The bin was tipped over a paper towel and Murph was shaking out his undercoat behind me when the flap clicked open and a small grey cloud of dander rose into my face. I sneezed twice before I could read the scale. That is pet hair management in my house: weigh what the robot vacuum caught, write the number down, try not to breathe. Most robot vacuum reviews skip the smart-home UX and never test a craftsman house with a husky in it, so this is the tally version instead. The LG CordZero is the bot that kept up with a husky mix and a senior beagle. It beat my old Roomba on the two things I care about: how often I had to rescue it, and whether it remembered what I told it.

Quick disclosure: I earn a commission if you buy through one of my links, at no extra cost to you. Every bot here went through the same kitchen-scale routine for my "Robot Tally" spreadsheet, which I started after a Roomba i3 died on the basement steps in early 2024. I'm not an engineer. I'm just tired of finding dog hair in my coffee. The longer backstory is in The Husky-Beagle Hair Tally: Why I Finally Swapped My Dead Roomba for the LG CordZero.

Craftsman Living Versus a 2.4GHz Handshake

Our 1920s craftsman bungalow on the northwest side of Indianapolis has lath and plaster walls, and they are Wi-Fi kryptonite. Every smart gadget I own has to fight through them. Most routers push everything onto 5GHz, while these bots want 2.4GHz to talk to their apps. So when the LG CordZero Robot came home, I braced for a failed connection.

It never came. The onboarding was painless and skipped the usual account scavenger hunt and subscription nagging. Compare that with the ECOVACS app, which feels like a Sephora checkout flow built to steer you toward a store card. I do a lot of my freelance writing in Mass Ave coffee shops, so I read every onboarding screen like an editor. The LG's reads like a person wrote it for another person.

The X-Sense was the harder pairing. One rainy evening I was crouched on the floor in the dark, forcing my phone to forget the 5GHz network so the hub for my X-Sense Smart Smoke and CO Detector would notice me. Two pairing attempts failed. "Is it the router or is it you?" Sam called from the next room. It was the router. Once everything sat on 2.4GHz, it paired fine. Check the band before you blame the robot, especially in an older house.

Weigh the Bin, Then Read the Pet Hair Tally

Every run ends with the same ritual. I tip the dustbin onto the kitchen scale, write down the number, and jot any rescue in the margin. "You're weighing it again?" Sam said. Yes. Murph blows his undercoat twice a year, and a bot that cannot handle a blow season is useless to me. The LG CordZero Robot became the hero of the spreadsheet on its three-stage suction. It does not just push hair around. It pulls it out of the gaps between our original hardwood boards.

Around week ten, the LG's row looked different from the rest. Its bin was full most days, the margin beside it was empty, and the dock had handled the emptying without me. My old Roomba's rows were mostly margin: stuck, rescued, stuck again. That is my whole test for a shed week now. Count how many rescue notes the bot earns, not how big the suction number looks on the box.

Smarter Maps Mean Needier Robots

Yes, a little, and that trade-off surprised me. Better navigation comes with more sensor upkeep. The LG and the Roborock S8 Pro Ultra both map the house well, but one husky hair over a cliff sensor sends a push notification to my phone like a needy ex. My older random-bounce bots ran longer between cleanings because they were too dumb to know they were dirty. They also missed half the room. I would rather wipe a sensor once a week than find a Beans accident smeared across the runner rug because the bot never saw it.

Speaking of accidents, the iRobot Roomba j7+ saved us once. Beans, in his senior years, sometimes loses a midnight argument with his digestion, and the j7+ steered clear of the mess. Its map editor is another story. Every time it re-learned the floor plan, it wiped my no-go zones. The dustbin is also smaller than the LG's, so it needs emptying more often for the same floors. You can read more about these navigation headaches in My Tracking Notes on Robot Nav Fails: Why Craftsman Bungalows and Huskies are the Ultimate Stress Test.

The ECOVACS had the same problem, only quieter. I drew a virtual no-go zone around the dining room rug, watched it save, and went to work. The app reset the zone overnight. No error, no banner, no "your zone was removed." Just gone, and the bot went right back to feeding itself to the IKEA rug fringe. Silent data loss is the worst thing an app can do to a person. I redrew that zone more times than I will admit. Fix that first, ECOVACS. Then we can talk about the mop.

Sensory Notes: Knocks, Sinuses, and a Quiet Purifier

Some of my tally data is just listening. When a bot noses into a sectional leg, I get a run of dull knocks from the living room, a pause, and then the sound of it changing its mind. The sectional leaves a gap of about three inches, so every run is a small suspense scene. The LG knocks, reverses, and finds its way. My old Roomba knocked until it gave up.

Along with the LG, I run the PuroAir HEPA 14 Air Purifier. The difference is physical. After the dogs come in from a rain-soaked walk, I run it on high for an hour and my sinuses feel clearer. HEPA 14 is a filter grade I will leave for another write-up. What I can report is how it lives with me. In sleep mode my phone's sound meter app reads 28 dB, which is quiet enough that I forget it is on. The LG is louder, obviously, but the noise ends when the run does.

Then there is the mop. One afternoon the Roborock S8 Pro Ultra lifted its mop pad as it crossed the runner rug, like a cat stepping around a puddle. "Okay, that one is actually smart," Sam said. "I didn't expect to say that about a robot." It is those small UX touches, a bot that knows the floor type, that make the high price tag sting a little less. Whether you will use a mop function every week is the question that decides if the extra money is worth it.

The LG CordZero Wins My Spreadsheet, With Two Asterisks

After about ten weeks of daily runs, the LG CordZero holds the top spot in my tally. Asterisk one: the brushroll still wraps my long hair after about ten runs, so every Saturday morning I sit with a pair of scissors unwinding it. Asterisk two: it is a real upfront investment. But in a house that produces enough fur to knit a third dog, it is the only bot that has not given up on me. If dander is your main problem, pair it with a PuroAir HEPA 14. That combination is the difference between a floor that looks clean and air that feels clean.

Brenley Hessler, a regular on r/robotvacuums, runs her bots on laminate and keeps asking whether my hardwood numbers would hold on her floors. Fair question. I can only report what this bungalow's floors did, which is why I keep logging.

If you want total floor autonomy and have the budget, the LG CordZero Robot is the one to get. Its auto-empty dock ran a full week without me touching it, which is a record in this house. If you care more about deep-cleaning mops and can live with a steeper app learning curve, the Roborock is a solid alternative. For more on keeping any of these bots alive, see The Unofficial Husky-Owner Guide to Not Killing Your Fourth Robot Vacuum.

Here is the one rule I would carry into any checkout page. Draw a single no-go zone, let the map re-save, and check that the zone survived. Then count the rescues in your first shed week. A bot that forgets what you told it is a bot you will end up babysitting, no matter how good the suction looks on paper.

Stop overthinking the specs. Pick the bot that will not get stuck under your sectional, and grab the LG CordZero below. Your sinuses will thank you, and so will your partner.