Roomba i3 Vs i7: Which One Is Really Better?

Are you confused about who wins the prize for best features between Roomba i3 vs i7? We all wish we could just snap our fingers, and our house would be magically clean. While that is now possible with iRobots, which one of the above is the most suitable for you? Let’s find out.

Quick Comparison

The crucial difference between the two Roomba models is the integrated camera in the i7. It facilitates advanced features like detailed maps, ultra-smart navigation, and creating keep-out zones.

A lack of an onboard camera in the i3 makes it cheaper than the i7 (almost half the price). Besides this, both the vacuums have a similar 3-stage cleaning technology, smart sensors, and control via the smart app and voice assistants.

I will detail the top differences and similarities between the two models. Hopefully, it will help you make a confident choice in which robot vacuum to invest. Let’s dive in.

Comparison Chart

The below table compares different aspects of iRobot Roomba i3 and i7.

iROBOT Roomba i3

iROBOT Roomba i7



High efficiency filter:

Imprint smart mapping:

Dirt detection sensor:

iRobot App connectivity:

Voice assistant compatibility:

Battery life:

75 minutes

75 minutes

Recharge time:

2 hours

2 hours

Suction power:

10 x

10 x

  Dustbin capacity:



Auto height adjusting feature:

Compatible with self emptying docks:

Cliff detector sensor:

Noise level:

65 dB

62 dB

Reactive sensor:

Floor tracking sensor:

Personalized cleaning suggestions:


13.34 x 13.26 x 3.63 inches

13.34 x 13.26 x 3.63 inches


11 pounds

7.44 pounds



Roomba i3 Pros And Cons

Roomba i3


  • Half the price of the Roomba i7.
  • 3-Stage intense cleaning system.
  • Voice assistant compatibility.
  • Smart navigation.
  • iRobot Home app connectivity.
  • Dirt detection sensor.
  • Spot cleaning.
  • Imprint smart mapping.
  • Personalized cleaning suggestions.
  • Compatible with i3+ Self-emptying dustbin.


  • Cannot create clean or keep-out zones.
  • No obstacle detection technology.

Roomba i7 Pros And Cons

Roomba i7


  • All the features of the Roomba i3.
  • Can create clean and keep-out zones.
  • Camera integration.
  • Can produce up to 10 detailed maps.
  • Advanced navigation.
  • Compatible with i7+ Self-emptying dustbin.


  • Double the price of Roomba i3.
  • No obstacle detection technology.

What Makes Roomba i3 Vs i7 Robot Vacuums Different?

Let’s examine how the Roomba i3 and i7 differ from one another.

What Makes Roomba i3 Vs i7 Robot Vacuums Different

Difference 1: Roomba i7 Has Advanced Navigation Due To Camera Integration

Roomba i7 navigates more efficiently than i3. Let’s see how:

Roomba i7

It has a camera on top. With its help, the robot plots your house intricately and creates detailed maps (up to 10). It combines floor tracking data and camera data to know where the barriers are. Hence, it has ultra-smart navigation.

Roomba i3

It does not have a camera. It still navigates logically in straight lines due to the floor tracking sensor at the bottom. 


The vacuums track where they have been. It saves the energy spent on cleaning the same place twice. They are also great at avoiding bumping into walls and removing themselves from narrow spaces.

Difference 2: Only Roomba i7 Has Clean And Keep-Out Zones

You cannot create specific zones within rooms in i3. Let’s see why:

Roomba i3

It has an imprint mapping system. It creates a single map of your house with a distinction between rooms. You can name them and instruct the vacuum to clean particular rooms. But due to a lack of precise maps, it cannot create or exclude specific cleaning areas within a room.

Roomba i3 imprint smart mapping

Roomba i7

It goes one step further than the i3 because of the camera feature. It draws intricate maps like a blueprint of the house. You can not only clean individual rooms but also designate clean and keep-out zones within them.

Roomba i7 Keep out zones

For instance, you can ask the robot to clean under the dining room table when you spill something during meals. Or you can ask it not to go near the pet house where you keep the water bowl.

Difference 3: Appearance And Weight

Roomba i3 and i7 have dissimilar designs.

Roomba i3 Vs i7 design

Roomba i3

It has a grey fabric textured circle.

Roomba i7

It has a black glossy finish and is lighter than the i3.

These are trivial distinctions and do not impact their cleaning performance.

In What Ways Is The Roomba i3 Robot Vacuum Similar To The i7?

Both the Roomba i3 and i7 share the following similarities:

In What Ways Is The Roomba i3 Robot Vacuum Similar To The i7

  1. 3-Stage Cleaning Process: Both vacuums have an intense three-stage cleaning method. I have explained it in the next section.
  2. Recharge And Resume: Both robots recharge automatically when low on energy and then pick up the vacuuming where they left off.
  3. iRobot App: Both vacuum cleaners are accessible through the iRobot Home app.
  4. Voice Control: You can give voice commands to Roomba vacuums via virtual assistants like Google Assistant.
  5. Sensors: The Roomba vacuums have multiple sensors like Dirt detection, Floor tracking, Reactive, Light Touch, and Cliff Detection.

Cleaning System

Both Roomba i3 and i7 have a 3-stage cleaning technique with high-powered suction, rubber brushes, and a high-efficiency filter. They have two modes:

  1. Normal Mode: The Roomba cleans the entire room going back and forth.
  2. Spot Cleaning Mode: The vacuum cleans a specific spot thoroughly by circling outward and then inward. 
Roomba i3 vs i7 Cleaning System

These models also have a:

  • Dirt Detection Sensor: It identifies dirty areas and cleans them rigorously.
  • Auto-Adjusting Feature: The vacuums have an auto-adjusting cleaning head that adjusts their height in response to the surfaces like carpets, rugs, and bare floors.

With these two advanced features, no floor surface in your house will remain uncleaned. Let’s look at the cleaning process.

High Suction Power

The suction power of Roomba i3 and i7 is 10x of its base 600 series. It efficiently lifts and pulls dirt and debris into the vacuum.

Dual Multi-Surface Brushes – No Entangled Pet Hair

Both the Roomba vacuums have two rubber brushes. They work well on multiple floor surfaces like tiles, hardwood floors, high-pile carpets, and rugs.

Roomba i3 vs i7 Dual Brushes

They do not have bristles. Hence, pet hair does not get entangled in them. Instead, they get sucked into the bin. As for long hair, they roll around the side of the brushes and are easy to pull out.

Edge-Sweeping Brush

It has three blades that rotate in a circular motion to push the dirt from the corners and into the cleaning path. They get sucked into the vacuum due to the powerful suction power.

Roomba i3 vs i7 Edge-Sweeping Brush

HEPA Filter

The vacuums have a high-efficiency filter inside the bin. It traps 99% of the finer dust particles and pet dander. It is a great feature for pet owners.

Winner: Tie

Battery Life And Recharge Time

Both Roomba i3 and i7 batteries have a run time of 75 minutes and a charging time of 2 hours. Their batteries have lithium-ion that charges quickly. 


Roomba i3 and i7

Battery Life:

75 minutes

Charging Time:

2 hours

Docking Station Power Consumption:

120V; 60 Hz

Winner: Tie

Smart Mapping System And Navigation

Let’s take a look at the mapping system and navigation!

Roomba i3

Roomba i3 has a floor tracking sensor and an imprint smart mapping. It navigates intelligently in a logical pattern instead of bouncing around randomly like other robot vacuums. It distinguishes between rooms and can clean specific rooms instead of the entire house. 

Roomba i7

In addition to the above features, the Roomba i7 has an in-built camera with advanced technology. It draws detailed maps and lets you create keep-out zones. But the downside of the camera in Roomba i7 is it cannot work in the dark.

Roomba i3 vs i7 Cliff Sensors

The robots navigate efficiently with the help of several sensors:

  • Reactive sensor: It warns where the robot cannot fit and prevents getting stuck.
  • Light Touch Sensor: It identifies walls and furniture, slows down, gently nudges them, and then changes direction.
  • Cliff Sensor: It identifies stairs and prevents the robot from falling off them.

Winner: Roomba i7


Both Roomba i3 and i7 have different designs. The i3 has a grey fabric texture on top, whereas the i7 has a black glossy look.

Here are the specifications of the robotic vacuums:

Roomba i3

  • Shape: Circular
  • Color: Black and Grey
  • Dimensions: 13.34 x 13.26 x 3.63 inches
  • Weight: 11 Pounds

Watch this video review of Roomba i3 for more details.

YouTube video

Roomba i7

  • Shape: Circular
  • Color: Black
  • Dimensions: 13.34 x 13.26 x 3.63 inches
  • Weight: 7.44 Pounds

Watch this video review of Roomba i7 for more details.

YouTube video

Winner: Roomba i7

iRobot Home App And Voice Assistant

You can add the Roomba i3 and i7 to the iRobot app. Using the app, you can:

  • Set cleaning schedules.
  • Track your robot’s whereabouts.
  • Know the areas the vacuum has cleaned.

You can also pair the robots with any virtual assistant for voice control.

Winner: Tie

Clean Base Compatibility

Roomba i3 and i7 are compatible with their respective self-emptying docks. You can buy them separately. The Plus models (i3+ and i7+) have a clean base as a part of the package.

Roomba i3 vs i7 Clean Base Compatibility

With this feature, the robot automatically disposes of the dustbin’s contents. All you need to do is replace the dirtbag in the clean base every few months.

Winner: Tie

Warranty Period

Both the vacuums have a warranty period of 1 year. If your iRobot breaks down during that period, you can get it serviced for free.

Winner: Tie


Is the Roomba i7 much better than the i3?

Yes, the Roomba i7 is much better than the i3 because of the camera integration. You can create clean and keep-out zones in i7. You cannot do this in i3.

Does Roomba i3 have room mapping?

Yes, Roomba i3 has a smart mapping that differentiates between rooms. You can also name or merge them as desired.

How old is the Roomba i3?

Roomba i3 was launched in September 2020 by iRobot.

Does Roomba i3 get smarter over time?

Yes, the Roomba i3 gets smarter over time due to periodic software updates with newer and advanced features.


Roomba i3 differs from i7 because of the camera integration and the ability to create zones within rooms. So which model should you buy?

Buy Roomba i3 if you
  1. Do not have large rooms or do not need a keep-out zone feature.
  2. Have a tight budget.
  3. Have privacy concerns over a camera recording your home.
Buy Roomba i7 if you
  1. Have large rooms.
  2. Are a pet owner. As the filter confines the pet dander, and the keep-out zone feature keeps the robot away from the pet’s water or food bowl.
  3. Want advanced mapping and navigation.

I hope this comparison review helped you decide which vacuum cleaner is the best for you. Do you think the absence of a camera in Roomba i3 is a disadvantage? Please comment below.