8 Best Robot Vacuums of 2024, Tested and Reviewed

Robot vacuum manufacturers will try to tell you that the most important spec is the level of suction. That is wrong—it’s the navigation system. It doesn’t matter how good a vacuum is at cleaning if it gets stuck every time it starts. A more complicated or expensive navigation system doesn’t guarantee that it won’t get stuck, but it is a good starting point. Many vacuums also combine systems.

• Sensor mapping: The most inexpensive vacuums use a combination of sensors along the exterior of the vacuum, like cliff detectors on the bottom and wall detectors on the bumper, to ping-pong around your home avoiding obstacles.
• Gyroscope: This is an affordable but surprisingly effective method of mapping that has been used in ships for centuries. A spinning wheel or light helps the vacuum determine its position relative to other objects in your home.
• Lidar: Lidar stands for “light detection and ranging.” The vacuum uses pulsed lasers to determine how far away each object is.
• Camera navigation: There’s a camera on it. Basically, the vacuum has little eyes that look around. While I’ve found this system to be extremely accurate and/or unintentionally hilarious, you must look for additional security protocols to make sure that said hilarious images of your home don’t end up on the internet.
• SLAM: With SLAM navigation, or “simultaneous localization and mapping,” the vacuum uses algorithms to process a bunch of data—for example, how many times the wheels have rotated, along with camera or sensor data—to calculate where and how far it should move. It’s usually used in combination with a few, or all, of these other navigation technologies.
• Machine learning: Many robot vacuum manufacturers now tout their own proprietary mapping system. For example, iRobot uses a system called Imprint Smart Mapping that learns as it cleans, as does Roborock’s SmartPlan. These also usually come in combination with a camera or lasers.

Robot vacuums have a complicated task. Your home is ever-changing, and no robot vacuum will be perfect. We have a few starting points here, but if you’re still having trouble, you should check out our guide to getting the most into your robot vacuum.

• Stay home for your robot vacuum’s first few runs. Many homes have hot spots—a weird door jamb, a lumpy rug—where you will need to rescue your vac. Do a quick run-through beforehand for robot booby traps, like ribbons, charging cables, and pieces of string.
• Check your Wi-Fi. If you have a Wi-Fi-enabled robot vacuum, most of them can only connect to the 2.4-GHz wireless band. If you’re having problems connecting, make sure you’re linking to the right band. Check out our guide to setting up your smart home for more tips.
• Vacs need maintenance. Like every robot—especially one that comes in contact with the grimiest parts of your house—you need to care for it regularly. Error messages may prompt you to empty the bin mid-run, cut the hair off the rollers, or wipe off the cliff sensors. Instruction manuals and YouTube can help.
• Vacuum during the day. If you have the choice, it’s usually better to schedule a run at 2 pm than at midnight, since many vacuums also use optical sensors to navigate.
• Don’t throw out your hand vacuum. I hate to be a downer, but you’re probably still going to need a full-size manual vacuum once in a while. I keep a Dyson around for quick spot cleaning and vacuuming bedroom corners.
• Be wary about disposable bags: Some vacuums pull dust into a disposable bag. Instead of dumping out the bin and getting dust everywhere, you just toss the bag out neatly and replace it. Unfortunately, some companies stop selling these bags altogether (looking at you, TP-Link), leaving you with a functioning robot vacuum that can’t suck up dust anywhere. Try and find information on how long parts like this will be available.

Each WIRED gear tester sets up the vacuum in their own home, according to the manufacturer instructions, and in a spot with clear Wi-Fi signal. Over the course of two weeks, we run the vacuum every day, examining a number of factors: battery life; how well the app works; whether the map is accurate; if it consistently cleans around the edges of your home; and how well it picks up dirt of various sizes, which includes sand, lint, dog hair, Cheerios, wood chips, and flour.

We also look for mitigating factors, such as whether it’s incredibly loud or ugly, or if it fits into your kitchen at all. For a vacuum to be useful, you have to want to use it and have it around. We also noted a vacuum’s power via the manufacturer’s stated Pa, or pascals—the higher the number, the greater the suction.