Roomba Combo j9+

Overview

The iRobot Roomba Combo j9+ is iRobot's flagship combined robot vacuum and mop, integrating both dry vacuuming and wet mopping into a single unit. Priced at $1,099 (approximately £900 in the UK), it includes an auto-empty base that evacuates the onboard dustbin automatically after each clean, and a retractable mopping pad system that lifts the wet mop clear of carpeted areas automatically. With a 2-hour runtime and the Roomba j9 series' strongest suction and navigation performance, it represents the premium tier of consumer robot cleaning.

Key Specifications

• Runtime: 2 hours per charge
• Auto-empty base: Included (holds up to 60 days of debris)
• Mop mechanism: Retractable pad with automatic carpet avoidance
• Navigation: iRobot Genius AI with 3D object avoidance
• Price: $1,099 (approximately £900 UK)

The j9+ uses iRobot's most advanced navigation, which includes real-time obstacle detection and avoidance for common household objects such as cables, socks, and pet waste. It integrates with the iRobot Home app for scheduling, zone management, keep-out zones, and cleaning history. Amazon Alexa and Google Home voice control are supported.

Use Cases

The Roomba Combo j9+ is a domestic consumer product suited to medium to large homes with mixed hard floor and carpet surfaces. For UK households with open-plan ground floors, the automatic mopping pad retraction on carpeted areas removes the main limitation of earlier combined vacuum-mop models, which deposited moisture on carpet if transitions were not managed manually.

The auto-empty base is particularly valued by allergy sufferers and households with pets, as it reduces the frequency of manual bin emptying and the dust exposure that accompanies it. The product is widely available from UK retailers including John Lewis, Amazon UK, and Currys.

Buying Used

A healthy second-hand market exists for Roomba j9+ units via eBay, Facebook Marketplace, and refurbished electronics retailers. Key items to check when buying used include the condition of the mopping pad and dock seal, the auto-empty bag availability, and the battery charge retention. iRobot sells replacement parts including batteries, brushes, and filter kits directly, supporting long-term ownership economics.

Alternatives to Consider

• Roborock S8 MaxV Ultra for a competing premium combined vacuum and mop with onboard self-cleaning dock
• Ecovacs Deebot X2 Omni for a competing flagship with mopping and auto-empty functionality
• Dyson 360 Vis Nav for an alternative high-suction robot vacuum without integrated mopping