Roomba i2 vs. i3/i3+: Which one’s Best? (3 Key Differences)

Last updated on April 15th, 2024

Looking for mid-range robot vacuums? The Roomba i2 and i3+ are great budget-friendly models. But which one of these should you get? Their specifications are almost similar, and hence, it becomes difficult to select one. In this article, we will discuss the differences in detail. Delve with us and find out.

Which is better: Roomba i2 vs. i3/i3+?

The Roomba i3+ is better than the i2. These models are pretty similar to each other, but a couple of things set the i3 apart from the i2. The first is the navigation and mapping capabilities. While both use vSLAM and iAdapt 1.0 navigation systems, the i3 has a mapping feature that the i2 does not.

The i3 can map your home and save up to 10 maps. You also get an extra HEPA filter. Considering all of this, the i3 is the better choice.

Read a similar article: Roomba i3/i3+ vs. i4/i4+ Specifications & Differences

What does the ‘+’ indicate?

The Roomba i3 has an upgraded version, the i3+. The only distinction between the original version and the ‘+’ version is that the ‘+’ version features a self-emptying dock. This self-emptying dock enables the vacuums to automatically empty their dustbins into a large bag within the dock. The bag doesn’t get full for weeks, so you don’t have to check it every now and then.

Roomba i2

Roomba i2 vacuum robot
Roomba i2

The Roomba i2 just recently hit the market in 2022 during the Amazon Prime Day Sale. Surprisingly, it was launched years later than the i3. It has the 3-Stage Cleaning System that all models in the i series feature. It also automatically charges and resumes cleaning from the spot it left off. It will give you an excellent cleaning experience the price can bring.

Roomba i3+

Roomba i3/i3+ vacuum robots
Roomba i3+

The Roomba i3+ first came on the market in 2018. They have been discontinued by the iRobot now, but you will find several refurbished models online.

The i3 can be easily upgraded to i3+, a self-emptying robot vacuum, by purchasing the Clean Base docking station. It has a mapping technology to map your house and offers you personalized cleaning recommendations accordingly.

Roomba i2 vs. i3/i3+: Specifications

Specifications of Roomba i2 vs Roomba i3/i3+
Specifications of Roomba i2 vs. i3/i3+

The table below compares these vacuums side by side.

SpecificationsRoomba i2Roomba i3+
Dimensions13.3 x 13.3 x 3.6 inches13.3 x 13.3 x 3.6 inches
Weight7.2 Pounds7.2 Pounds
ColorGrey with BlackGrey with Black
AvailabilityRefurbished modelsRefurbished models
Surface RecommendationCarpets, Hard FloorsCarpets, Hard Floors
Cleaning OptionsVacuumingVacuuming
Control TypeVoice, AppVoice, App
Compatible DevicesAmazon Alexa,
Google Assistant
Amazon Alexa,
Google Assistant
BrushesDual Multi-Surface Brushes,
Edge-Sweeping Brush
Dual Multi-Surface Brushes,
Edge-Sweeping Brush
Dustbin Capacity0.5 L0.5 L
Self-Emptying BinAbsentPresent
Filter TypeHEPA FilterHEPA Filter
Battery Capacity1800 mAh1800 mAh
Runtime75 mins75 mins
Charging Time3 hours3 hours
Battery TypeLithium IonLithium Ion
Suction Power10x*10x*
Airflow8 CFM8 CFM
Warranty1 year1 year
vSLAM TechnologyPresentPresent
Smart Mapping TechnologyAbsentPresent
iAdapt 1.0 NavigationPresentPresent
Cliff SensorPresentPresent
3-Stage Cleaning SystemPresentPresent
Dirt Detection TechnologyPresentPresent
Personalized Cleaning SuggestionsPresentPresent
Noise Level65 dB65 dB
Extra HEPA FilterAbsentPresent
Roomba i2 vs. i3/i3+ Comparison

* indicates comparison with the 600 series.

Let’s discuss how these robot vacuums are different from each other.

Differences between Roomba i2 vs. i3/i3+

These models are very similar to each other. But the differences listed below help us understand how one differs from the other.

A Roomba mapping a floor
A Roomba mapping a floor

These models use the same navigation technology. They use the iAdapt 1.0 navigation system available in most mid-range iRobots. But the i2 is not able to map your home. It navigates in the exact same pattern as the i3 but just can’t map the space.

The i3+, on the other hand, can not only map your home but also save those maps. Once your vacuum has fully learned about your house, you can separate one room from another and label them as kitchen, bedroom, etc. You can save up to 10 maps on your iRobot mobile app. Unfortunately, you cannot set up no-go zones with this robot.

Since the i3 also provides mapping along with smart navigation, you should pick it over the i2.

Self-emptying bin: Roomba i2 vs. i3/i3+

The i2 and i3 have a Home Base docking station. The Home Base is not capable of self-emptying the bin.

But the i3+ comes with a Clean Base docking station. The Clean Base easily sucks out the debris from your robot’s dustbin and stores it in a large dirt disposal bag. This bag can hold debris for up to 30 cleaning cycles. So you can put emptying the bin out of your mind for quite some time.

Similarities between Roomba i2 and i3/i3+

These models have too many resemblances. They replicate each other in size, shape, and weight. They even have the same dustbin capacity. These vacuums give almost the same runtime of 75 minutes with their 1,800 mAh Lithium Ion battery.

Most of the time, their cleaning performance is also identical to each other. They have the same 3-Stage Cleaning System and Dirt Detection Technology. These vacuums will move around your house in similar patterns. They even give out noise of the same level, i.e., 65 dB.

What’s in the box?

The i2 does not come with any additional accessories. It simply has the vacuum, charging station, and charging cable in the package. The i3 has all this, plus an additional HEPA filter.

Note: You will need to replace the pre-installed filter in both vacuums after 4 to 6 months.

The complete list of accessories included with the vacuums is shown below.

Roomba i2Roomba i3+
1 Robot Vacuum1 Robot Vacuum
1 Home Base Docking Station1 Clean Base Docking Station
1 Power Cord1 Power Cord
1 Extra HEPA Filter
What’s in the box?

You will get an extra filter for almost a similar price with the i3+ model.


Even though the i2 is the newer model, it is not as advanced as the i3+. The latter is superior as it has mapping technology, which the i2 lacks. Frankly, we don’t understand the point of bringing out a new version if it’s not better than the older one. But iRobot might have its own reasons.

That being said, considering everything, we recommend the i3 over the i2. You should be inclined towards getting that self-emptying bin feature for a few extra bucks with the i3+.


Does Roomba i3 do mapping?

Yes, the Roomba i3 has the Imprint Smart Mapping feature that can map your home and save the map for further use. You can create and label different rooms and use the robot to clean specific rooms. The iRobot mobile app can save up to 10 maps.

Is Roomba i2 good for carpets?

Yes, it will work on carpets, but it is not as good as any of the high-range vacuums. It will get the job done if you are talking about low-pile carpets. But it struggles with high pile carpets. So we wouldn’t say it’s good, but it is pretty average.

Does Roomba i3+ work on pet hair?

Yes, the Roomba i3+ works much better on pet hair as it has 10x the suction power of the 600 series. It is efficient in picking up pet hair. But sometimes, you will find blobs of hair stuck to the bottom of this vacuum, which is not desirable.

Photo of author

Siddhi Gurav

She is the editor and content writer at Smart Home Bulls. Siddhi merges her passion for language with SEO expertise. With 4 years of experience as a creative writer and a passion for smart home technology, she fits in perfectly at Smart Home Bulls. Her wide experience in content marketing has been an excellent addition to our team.

Leave a Comment