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Roomba Vacuums Comparison: J9+, J7+, J5+, I5+

This week, iRobot announced a new lineup of Roomba vacuum and mop combo products, including their new flagship robot, the Roomba Combo j9+. We thought we would do a complete breakdown of whatโ€™s new with the iRobot Roomba vacuum mop combo lineup and explain the similarities and differences between each model.

Roomba Combo j9+ vs j7+ vs j5+ vs i5+

iRobotโ€™s new vacuuming and mopping robots now include the Roomba Combo i5+, j5+, j7+, and the top-of-the-line Roomba Combo j9+. The word โ€œcomboโ€ in their name means that they can vacuum as well as mop.

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RELATED: See our full, in-depth review of the Roomba Combo j7+ and Roomba Combo j9+.

Mopping, Vacuuming, and Auto-Empty Options

Some of these iRobot Roomba vacuums, like the j7 and j9, also have cheaper versions that do not include mop functionality, so no โ€œcomboโ€ in the name for those versions. The โ€œPlusโ€ in their name is a reference to their auto-empty bin. All the models on the screen have an auto-empty bin option.

Similarities

Vacuuming Performance

These robot vacuums are all quite similar in terms of their basic vacuuming ability. For example, they all use the same dual brush design, which adapts to floor types, and the same single side brush.

A patent kept other manufacturers from copying Roombaโ€™s dual-brush design until its recent expiration. Roborock promptly incorporated a two brushroll design into their flagship S8 Pro Ultra robot vacuum model.

Itโ€™s a tried-and-true system that iRobot calls a four-stage cleaning system. When combined with iRobotโ€™s basic cleaning algorithm, which all of these share, it makes Roombas some of the best pure vacuuming robots on the market.

At the time of publishing, the Combo j7+ was actually our top pick for Best Robot Vacuum for Carpet.

Close-up of an iRobot Roomba Combo model showing its lifting mop pad mechanism, with a hand demonstrating how the mop pad attaches to the device.
Inspecting the iRobot Roomba Combo lifting mop pad mechanism.

Cleaning, App, and Advanced Features

Each iRobot Roomba vacuum can make a map of your home and navigate in straight lines instead of randomly, though there are some differences in how they navigate, which weโ€™ll address later. All of them have the ability to clean individual rooms using either the app or voice commands.

Close-up view of the dual-brushroll design featured in the iRobot Roomba Combo j9+, j7+, j5+, and i5+ models, with the vacuum and brushes displayed on a textured carpet.
The Combo j9+, j7+, j5+, and i5+ all have iRobotโ€™s dual brushroll design.

Also, each features a recharge and resume ability, which means they can continue vacuuming from where they left off if they need to return to their base for charging. All of them also have apps that will automatically suggest cleaning schedules based on historical data, and you can create very detailed customized cleaning routines for all of them as well.

Roomba Combo Model Comparison Chart

j9+ Comboj7+ Comboj5+ Comboi5+ Combo
VacuumYesYesYesYes
Suction+ 100%StandardStandardStandard
MopYesYesYesYes
Lift/Stow MopYesYesNoNo
Change Tank/Bin MopNoNoYesYes
SmartScrubYesNoNoNo
Auto-Empty DustbinYesYesYesYes
Auto-Water RefillYesNoNoNo
MappingYesYesYesYes
DirtDetect (sensing)YesYesYesYes
Dirt Detective (Learning)YesNoNoNo
Row-by-Row CleaningYesYesYesYes
PrecisionVision NavigationYesYesYesNo
Obstacle AvoidanceYesYesYesNo
Recharge & ResumeYesYesYesYes
Schedule SuggestionsYesYesYesYes
PriceHighMidMidMid-Low
Where to BuyAmazonAmazonAmazonAmazon
Roomba capabilities from the iRobot website and robot vacuum manuals.

Differences

The differences begin with their prices, with the Combo i5+ being the least expensive and the j9+ being the most expensive.

The j5, j7, and j9 robots all have a similar navigation system. They use iRobotโ€™s top-of-the-line Precision Vision navigation, which uses a single front-mounted camera to map and navigate around the house.

iRobot Roomba Combo on Self-Emptying Clean Base
iRobot Roomba Combo docked on self-emptying Clean Base.

This system enables advanced features like keep-out zones or virtual barriers that you can create in the app. Also, because of the camera, the J-series bots use visual information to recognize and avoid household objects, ensuring they donโ€™t get stuck. iRobot has even guaranteed that their robots will recognize and avoid pet waste.

The Combo i5+, however, does not have Precision Vision navigation. Instead, it relies on a basic floor tracking and algorithm-based navigation system, similar to the Roomba i3. This system is limited to map-related features and does not have obstacle avoidance like the others.

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Auto Empty Bin and Mop Management

Another significant difference is the new auto-empty bin functionality for the Combo j9+. While all four can empty their robotโ€™s dust bin into an included disposable bag, the Combo j9+ also has an internal clean water tank, which fills the robotโ€™s water tank for mopping.

iRobot claims that the Combo j9+ clean base can hold up to 30 days of water for mopping, making it the most automated cleaning system theyโ€™ve ever released.

A single iRobot Roomba robot vacuum cleaning a light wooden floor, with a colorful patterned rug partially visible on the right side. This image was taken during testing of the iRobot Roomba vacuum models.
Testing the Roomba vacuum combo robot mop lifting capabilities.

Mopping Systems

The mopping systems on these robots vary. The Combo j7+ and j9+ use a design where the mopping pad is mounted on top of the robot. When it senses hard floors, it lowers the pads, and when it senses carpet, it raises the mop pad back up.

This system ensures your carpets wonโ€™t get wet from the mop. The j5 and i5+ have a different mopping system, where they come with two separate dust binsโ€”one for mopping and one for vacuuming.

Close-up of an iRobot Roomba vacuum cleaner with a reflective black surface, showcasing its 'Clean' button and sleek design, placed on a light carpeted floor.
We have tested iRobots Dirt Detect System since its 600-series Roomba models.

DirtDetect

While they all have iRobotโ€™s patented DirtDetectโ€”a sensor that can tell if itโ€™s vacuuming a dirty areaโ€”the i5+ and j5 only have this functionality when the vacuum-only bin is used. Itโ€™s disabled with the mopping bin.

Smart Cleaning Features

The j9+ also boasts upgrades not found in the other models. For instance, it has 100% more suction power. It also has features like Dirt Detective, which learns from past cleanings to prioritize dirtier rooms, and Smart Scrubbing, which doubles the passes over heavily soiled areas.

Image showcasing four iRobot Roomba modelsโ€”Combo j9+, j7+, j5+, and i5+โ€”lined up side by side, each with its respective docking station and labeled name above. Some models include additional cleaning accessories.
The Roomba Combo lineup.

Which Roomba to Choose?

Choosing a Roomba model will depend on your needs and budget. Pricing is always changing, but at a high level, the i-Series is less expensive than the j-Series, and as model numbers increase, so does the Roombaโ€™s cost.

As far as features and functionality, hereโ€™s a quick reference:

  • The J series has advanced navigation and obstacle avoidance.
  • The j7 and j9 have a dual retracting mop system.
  • The j9 can fill its water bin automatically.
  • Only the j9 offers advanced app features like Smart Scrub and Dirt Detective.
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Christopher White

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Christopher White CEO
Christopher White is the CEO of Vacuum Wars, the premier YouTube channel dedicated to vacuum cleaner reviews. Over the past eight years, Vacuum Wars has become a trusted resource, meticulously reviewing hundreds of robot vacuums, cordless vacuums, carpet cleaners, and various floor care products. Known for their comprehensive in-house testing, Vacuum Wars has built one of the most extensive databases of vacuum cleaner metrics available. Under Christopherโ€™s leadership, the channel has maintained a strict no-sponsorship policy, ensuring that all reviews remain unbiased and trustworthy. This dedication to integrity has garnered a loyal following of over 300,000 subscribers who rely on their expert advice. Christopher is also a recognized authority on robot vacuums, boasting one of the largest private collections of these devices worldwide. Learn more.

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