Roomba

What it is

Roomba is an automated vacuum cleaning robot, first released in 2002^[1]. It is a home appliance that drives itself across a floor and collects dust and debris, so that a person does not have to push it from room to room. The idea sounds simple, but a machine that cleans a floor on its own has to answer several practical questions at once: how to notice a wall or a chair leg before bumping into it, how to cover a room without wandering over the same patch, and how to run long enough on one battery charge to be worth switching on.

Where it came from

iRobot unveiled Roomba in September 2002 as its flagship home robot^[1]. The first Roomba sold 50,000 units in its first year^[2]. Sales then climbed quickly: a million units had been sold by 2004^[1], and cumulative sales passed two million by 2005^[2]. For a device with no established market behind it, that is the point at which a home robot stopped being a demonstration and became something ordinary households bought. Roomba is credited with creating the consumer robot vacuum category^[2].

What defined it

The product line's approach to navigation became one of its distinguishing features, and eventually one of its difficulties. iRobot kept to a visual navigation approach, while Chinese rivals moved to lidar and AI-based obstacle avoidance starting in 2018; iRobot released a comparable product only in 2023^[2]. Lidar, in plain terms, measures distance by timing how long a pulse of light takes to travel out and bounce back, which gives a robot a fairly direct picture of the room around it. Staying with a different approach for years meant the company was defending a design choice while competitors changed the terms of the comparison.

Where it sits

For a long stretch Roomba and the company behind it were the market. By 2015 iRobot's global market share exceeded 60% and its share in the United States exceeded 80%^[2]. Then the ground shifted. iRobot's own risk disclosures acknowledged that rivals' combined vacuum-and-mop products and multifunction docks took market share, and that such products could be sold at higher prices^[2]. Cleaning and mopping in one pass, plus a dock that also handles maintenance tasks, changed what buyers compared: a machine that only vacuums became one function among several. After the restructuring, iRobot would continue operating with its brand and product support retained^[2]. Roomba's place in the story is therefore twofold: it is the product that opened the consumer robot vacuum market, and it is a record of how that market later changed.