It would come as a surprise to more people than you think that “roomba” isn’t the universal term for a robot vacuum. It is, in fact, a capital “R” that denotes Roomba as a proper noun rather than a generic trademark, though the Band-Aid level interchangeability really does exemplify just how iconic iRobot has become in the world of automated floor cleaners.
That can be attributed to the fact that iRobot has consistently delivered some of the most reliable robot vacuum models for two decades. More than 20 Roombas have come out since the first one hit homes in 2002, but tracking the best Roombas isn’t so chaotic when you consider that only a handful of those models are actually relevant at the time of your shopping.
Right now is a particularly good time to keep your eye out for a discounted Roomba, because Amazon Prime Day 2024 is on the way. This year’s big shopping event is on July 16 and 17, and we’re already seeing early Prime Day deals on plenty of robot vacuums, including Roombas and self-emptying robovacs. There are certainly more robot vacuum deals to come, and we’ll keep you updated on all things Prime Day leading up to the event and beyond.
How to tell the difference between the Roomba models
The arbitrary numbers and letters of the Roomba family tree are confusing at face value, but nothing that can’t be told apart after learning a few super general classification themes.
When shopping for a Roomba, you’ll really only be choosing from what we call iRobot’s core lineup: the group of three to five Roomba series that are actively sold on iRobot’s website. Any Roomba whose title includes a letter with a number (like j9+ or i5) is more advanced than a Roomba with just numbers in the title (like 692).
The j Series is iRobot’s most advanced right now, followed by the s Series, i Series, and then the 600 Series. A plus sign (like j9+) denotes that the model comes with a self-emptying dock. Roombas that mop will have “Combo” in the title, and there are several Roombas that can be purchased with or without mopping abilities.
You won’t need to memorize any nuances past these overarching rules. We’ll cover the fine print, like which Roombas have smart mapping or small obstacle detection, in our deep dive below, noting the most important differences between each current Roomba.
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