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iRobot Roomba i3+ Review | 118 Data compared

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  • Avg. price: ~£260
  • Max suction power: ?
  • Runtime: 75 min
  • Dustbin capacity: 400 mL
  • Max threshold height: 20 mm

iRobot Roomba i3+ review. Compare 118 technical specifications and user reviews to see how this product ranks in the Robot Vacuums category and whether it is worth buying.

6.4

Overall score

What it is: An overall evaluation of the robot vacuum's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best robot vacuums on the market.

Score components:

80.0%

6.0

Technical Score

20.0%

8.0

User score

Good
6.0

Technical Score

What it is: An assessment of robot-vacuum performance across cleaning, navigation, mopping, battery life, filtration, brush design, smart features, and dimensions.

When it matters: When you want to compare robot vacuums based on technical performance and available features.

Score components:

30.0%

6.8

Cleaning

23.0%

6.3

Navigation

18.0%

4.0

Mopping

12.0%

4.0

Battery

10.0%

8.8

Smart Features

7.0%

5.2

Design

Good
8.0

User score

What it is: A rating that combines user reviews and the total number of reviews received by the robot vacuum

When it matters: When you want to know how a robot vacuum handles daily tasks and how reliable it remains over time according to user feedback.

Score components:

70.0%

7.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.1
(1475)
amazon
3.1
(1382)
amazon
3.3
(585)
United States
Amazon_logo.png
3.1
(1407)
Amazon_logo.png
3.3
(593)
Amazon_logo.png
4.0
(405)

(Reviews last updated: July 2026)

Excellent
  • 4.8
    Mopping

    Score components:

    35.0%

    4.0

    Mopping system type

    25.0%

    4.0

    Mop lifting

    20.0%

    4.0

    Auto water refill

    20.0%

    ?

    Water tank capacity

  • 7.5
    Pet homes

    Score components:

    35.0%

    10

    Anti-tangle technology

    30.0%

    ?

    Max suction power

    20.0%

    4.0

    Carpet boost

    15.0%

    5.3

    Dustbin capacity

  • 3.9
    Navigation and mapping

    Score components:

    30.0%

    5.5

    Primary navigation technology

    30.0%

    4.0

    Obstacle avoidance technology

    20.0%

    1.0

    Object recognition

    20.0%

    4.0

    Real-time mapping

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Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The iRobot Roomba i3+ is a mid-range robot vacuum featuring a 13.26-inch wide and 3.63-inch tall chassis, equipped with a 3-Stage Cleaning System that delivers 10X the power-lifting suction of the Roomba 600 series, dual multi-surface rubber brushes, and a high-efficiency filter trapping 99% of allergens. Its primary advantage is the included Clean Base Automatic Dirt Disposal tower (12.2 x 15.1 x 19 inches) that stores up to 60 days of debris, alongside floor-tracking sensors for efficient row-by-row navigation and a recharge-and-resume capability supporting its 75-minute battery life. However, notable drawbacks include its lack of an integrated optical camera which limits advanced navigation and multi-floor mapping, noisy operation reaching up to 74dB, and the recurring cost of proprietary disposal bags.

Technical Specifications of robot vacuum iRobot Roomba i3+

Technical Score

What it is: An assessment of robot-vacuum performance across cleaning, navigation, mopping, battery life, filtration, brush design, smart features, and dimensions.

When it matters: When you want to compare robot vacuums based on technical performance and available features.

Score components:

30.0%

6.8

Cleaning

23.0%

6.3

Navigation

18.0%

4.0

Mopping

12.0%

4.0

Battery

10.0%

8.8

Smart Features

7.0%

5.2

Design

6.0
iRobot Roomba i3+ has a technical score of 5.96, lower than that of 74.3% of robot vacuums.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the robot vacuum

When it matters: When you want to know how a robot vacuum handles daily tasks and how reliable it remains over time according to user feedback.

Score components:

70.0%

7.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.1
(1475)
amazon
3.1
(1382)
amazon
3.3
(585)
United States
Amazon_logo.png
3.1
(1407)
Amazon_logo.png
3.3
(593)
Amazon_logo.png
4.0
(405)

(Reviews last updated: July 2026)

8.0
iRobot Roomba i3+ has a user score of 8.05, higher than that of 64.4% of robot vacuums.
Popularity
What it is: An indicator based on the number of reviews received by the robot vacuum.
When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.
10
iRobot Roomba i3+ has a popularity of 10 points, which is higher than 68.1% of products in this category.
Ratio quality/price

What it is: An indicator that combines the robot vacuum's overall rating with its cost.

When it matters: When you are looking for a robot vacuum with a good balance between quality and price.

Score components:

60.0%

6.4

Overall score

40.0%

9.2

Price

7.2
iRobot Roomba i3+ has a quality-to-price ratio of 7.2 points, which is lower than 65% of products in this category.
Max suction power
What it is: Maximum suction power is the highest pressure the vacuum motor is rated to produce, measured in pascals.
When it matters: Higher figures can help lift embedded debris from carpet, but brush design and airflow also determine real cleaning performance.

Importance: HIGH

?
N. of suction power levels
What it is: The number of suction levels shows how many power settings can be selected.
When it matters: More levels give finer control over noise, battery use and cleaning strength on different floors.

Importance: MEDIUM

1
iRobot Roomba i3+ has a suction-level count of 1, which is lower than that of 92.4% of robot vacuums and the same as that of 7.6% of robot vacuums.
Motor type
What it is: Motor type identifies whether the suction motor uses a brushed or brushless design.
When it matters: Brushless motors generally offer better efficiency and durability, although complete airflow design still determines performance.

Importance: LOW

brushless
iRobot Roomba i3+ uses a motor type considered more efficient than those in 2.7% of robot vacuums and matched by 97.3% of robot vacuums.
Power
What it is: Power is the electrical input rating of the robot or its charging system.
When it matters: It describes energy demand, but it should not be treated as a direct measure of suction or floor-cleaning ability.

Importance: LOW

?
Cleaning modes
What it is: Cleaning modes are the distinct automatic or targeted cleaning programs available on the robot.
When it matters: A wider choice makes it easier to match cleaning behavior to rooms, spills, edges or quiet periods.

Importance: MEDIUM

2
iRobot Roomba i3+ offers 2 cleaning modes, which is fewer than 89.9% of robot vacuums and as many as 10.1% of robot vacuums.
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Mopping capability
What it is: Mopping capability means the robot can wipe hard floors with a damp pad or active mop system.
When it matters: It is useful for fine dust and light marks, but it does not automatically mean the robot can replace deep manual mopping.

Importance: MEDIUM

no
iRobot Roomba i3+ cannot mop floors, while this feature is available on 79.1% of robot vacuums.
Mopping system type
What it is: The mopping system type describes how the robot applies motion and pressure to its mop, such as a static pad, vibrating pad, rotating pads or roller.
When it matters: Active systems generally scrub dried marks better, while pad lifting and dock washing determine how practical they are on mixed floors.

Importance: HIGH

none
iRobot Roomba i3+ uses none for mopping, a system that is less effective than those in 79.8% of robot vacuums and matched by 20.2% of robot vacuums.
Mop pad type
What it is: Mop pad type describes the pad shape and attachment used by the mopping system.
When it matters: It affects floor contact, edge reach, replacement availability and whether the pads can be washed easily.

Importance: LOW

none
Mop pad material
What it is: Mop pad material is the fabric or fibre used to wipe and absorb dirt from the floor.
When it matters: It influences absorption, scrubbing action, durability and how easily the pad releases dirt when washed.

Importance: LOW

none
Mop pressure
What it is: Mop pressure is the downward force the mopping system applies to the floor.
When it matters: More controlled pressure can improve removal of dried marks, although pad motion and moisture delivery also matter.

Importance: LOW

?
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Primary navigation technology
What it is: The primary navigation technology is the main sensor system the robot uses to understand its position and plan a route.
When it matters: It affects route efficiency, coverage and how reliably the robot returns to its dock, especially in larger or more complex homes.

Importance: HIGH

gyroscope
iRobot Roomba i3+ uses gyroscope as its primary navigation system, which is less capable than the systems in 73.9% of robot vacuums and matched by 19.2% of robot vacuums.
Mapping capability
What it is: Mapping capability lets the robot create a floor plan instead of cleaning only from moment-to-moment sensor reactions.
When it matters: A saved map is important for room selection, no-go zones and predictable coverage.

Importance: MEDIUM

yes
iRobot Roomba i3+ maps the floor. This feature is available on 74% of robot vacuums.
Real-time mapping
What it is: Real-time mapping updates the floor plan and the robot's route while a cleaning run is in progress.
When it matters: It helps you follow progress, spot missed areas and see where the robot is if it becomes stuck.

Importance: LOW

no
iRobot Roomba i3+ does not update its map in real time, while this feature is available on 68.7% of robot vacuums.
Grounded no from data_scrape2/data_scrape4 (agreement or one clear no/N/A with other source empty/noisy).
Multiple map storage
What it is: Multiple map storage keeps separate floor plans for more than one level or cleaning area.
When it matters: It is useful in multi-storey homes because the robot does not need to rebuild the map each time it changes floors.

Importance: LOW

no
iRobot Roomba i3+ does not store multiple maps, while this feature is available on 56.7% of robot vacuums.
Map editing
What it is: Map editing lets you divide, merge, name and adjust rooms in the app.
When it matters: Accurate room boundaries make room-by-room schedules and targeted cleaning easier to use.

Importance: LOW

yes
iRobot Roomba i3+ lets you edit maps. This feature is available on 63.9% of robot vacuums.
Grounded yes from data_scrape2/data_scrape4 (agreement or one clear yes with other source empty/noisy).
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App control
What it is: App control lets you operate and configure the robot from a smartphone application.
When it matters: It is needed for maps, room selection, schedules and many advanced settings on modern robot vacuums.

Importance: LOW

yes
iRobot Roomba i3+ supports app control. This feature is available on 94.4% of robot vacuums.
App name
What it is: App name identifies the manufacturer's mobile application used to control the robot.
When it matters: It helps you check phone compatibility, account requirements and user feedback for the correct app before buying.

Importance: LOW

iRobot Home (Classic)
Wi-Fi connectivity
What it is: Wi-Fi connectivity links the robot to its app and cloud services through the home network.
When it matters: It enables remote control and updates, but setup quality depends on router compatibility and signal coverage.

Importance: LOW

yes
iRobot Roomba i3+ connects to Wi-Fi. This feature is available on 93.7% of robot vacuums.
Supported Wi-Fi bands
What it is: Supported Wi-Fi bands identify the wireless frequencies the robot can use, commonly 2.4 GHz and sometimes 5 GHz.
When it matters: Band support matters during setup because many robot vacuums connect only to a 2.4 GHz network.

Importance: LOW

2.4 GHz
Bluetooth connectivity
What it is: Bluetooth connectivity provides a short-range wireless link, often used during initial setup.
When it matters: It can simplify pairing but usually does not replace Wi-Fi for remote app control.

Importance: LOW

yes
iRobot Roomba i3+ connects via Bluetooth. This feature is available on 64.5% of robot vacuums.
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Battery capacity
What it is: Battery capacity is the amount of electrical charge the battery can store, measured in milliamp-hours.
When it matters: More capacity can support longer cleaning runs, but motor power, mopping and navigation also affect actual runtime.

Importance: MEDIUM

1,800 mAh
iRobot Roomba i3+ has a battery capacity of 1,800 mAh; it is lower than that of 95.5% of robot vacuums and equal to that of 3.9% of robot vacuums.
Grounded current sources converge on 1800 mAh battery capacity.
Battery type
What it is: Battery type identifies the battery chemistry used by the robot.
When it matters: It affects weight, service life and charging behavior, with lithium-ion now being the common modern design.

Importance: LOW

Li-ion
Battery voltage
What it is: Battery voltage is the nominal electrical voltage of the robot's battery pack.
When it matters: It is mainly useful for checking replacement-battery compatibility and does not by itself indicate runtime.

Importance: LOW

14.4
Runtime
What it is: Runtime is how long the robot is rated to clean on one charge under the stated test mode.
When it matters: Longer runtime matters on large floors, while recharge-and-resume can compensate for a smaller battery.

Importance: MEDIUM

75 min
iRobot Roomba i3+ runs for 75 min per charge; this is shorter than 94.8% of robot vacuums and equal to 3.6% of robot vacuums.
Recharge and resume
What it is: Recharge and resume sends the robot back to charge and then returns it to the unfinished part of the map.
When it matters: It allows large cleaning jobs to finish without manual intervention when one battery charge is not enough.

Importance: LOW

yes
iRobot Roomba i3+ resumes cleaning after charging. This feature is available on 83.1% of robot vacuums.
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Shape
What it is: Shape describes the robot's body outline, most commonly round or D-shaped.
When it matters: Shape influences corner reach and manoeuvring, although brush placement and route planning are equally important.

Importance: LOW

round
Height
What it is: Height is the vertical clearance required by the robot.
When it matters: A lower body can clean under more sofas, beds and cabinets, but measure the furniture gap before relying on it.

Importance: LOW

92 mm
iRobot Roomba i3+ is 92 mm tall; this is lower than 56.6% of robot vacuums and equal to 2.4% of robot vacuums.
Width
What it is: Width is the side-to-side size of the robot.
When it matters: It determines whether the robot can pass between chair legs, furniture and other narrow spaces.

Importance: LOW

338 mm
iRobot Roomba i3+ is 338 mm wide; this is narrower than 50.3% of robot vacuums and equal to 1.2% of robot vacuums.
Length
What it is: Length is the front-to-back size of the robot.
When it matters: Together with width and shape, it affects turning space and access around closely placed furniture.

Importance: LOW

338 mm
iRobot Roomba i3+ is 338 mm long; this is shorter than 53.1% of robot vacuums and equal to 1% of robot vacuums.
Weight
What it is: Weight is the mass of the robot itself, excluding its dock.
When it matters: A lighter robot is easier to carry between floors, while weight has little direct connection to cleaning quality.

Importance: LOW

4.7 kg
iRobot Roomba i3+ weighs 4.7 kg; this is more than 87.9% of robot vacuums and equal to 1.4% of robot vacuums.
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iRobot Roomba i3+ vs the average robot vacuum

  • Prevents hair tangles
    iRobot Roomba i3+ prevents hair tangles, while the average robot vacuum has no anti-tangle system.
    Grounded yes from data_scrape sources: Yes (Dual Multi-Surface Rubber Brushes)
    What it is: Anti-tangle technology is designed to prevent or remove hair wrapped around the main brush and axles.
    When it matters: It is especially valuable in homes with pets or long hair because it reduces manual brush cleaning.

    Importance: MEDIUM

    iRobot Roomba i3+ prevents hair tangles, while the average robot vacuum has no anti-tangle system.
  • Empties its dustbin automatically
    iRobot Roomba i3+ empties its dustbin automatically, while the average robot vacuum requires manual dustbin emptying.
    What it is: Auto-empty capability lets the dock remove dry debris from the robot's bin after cleaning.
    When it matters: It reduces daily emptying and is especially useful for pet hair, large homes and frequent schedules.

    Importance: LOW

    iRobot Roomba i3+ empties its dustbin automatically, while the average robot vacuum requires manual dustbin emptying.
  • Detects dirtier areas
    iRobot Roomba i3+ detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
    What it is: Dirt detection uses sensors to identify areas that need extra cleaning.
    When it matters: It can make the robot spend more time on heavily soiled spots instead of treating every part of the floor equally.

    Importance: LOW

    iRobot Roomba i3+ detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
  • Adjusts its cleaning height automatically
    iRobot Roomba i3+ adjusts its cleaning height automatically, while the average robot vacuum uses a fixed cleaning height.
    What it is: Automatic height adjustment changes the cleaning-head position to maintain contact with different floor surfaces.
    When it matters: It can improve pickup when the robot moves between hard floors, rugs and uneven surfaces.

    Importance: LOW

    iRobot Roomba i3+ adjusts its cleaning height automatically, while the average robot vacuum uses a fixed cleaning height.
  • 2.5 h faster charging
    iRobot Roomba i3+ takes 2 h to charge, compared with 4.5 h for the average robot vacuum.
    What it is: Charging time is the approximate time required to refill the battery from low charge.
    When it matters: A shorter charge is useful when the robot must resume an unfinished large cleaning job.

    Importance: LOW

    iRobot Roomba i3+ takes 2 h to charge, compared with 4.5 h for the average robot vacuum.2 h vs 4.5 h
  • Alerts you when its dustbin is full
    iRobot Roomba i3+ alerts you when its dustbin is full, while the average robot vacuum does not alert you when its dustbin is full.
    What it is: A dustbin-full indicator warns when the robot's internal bin needs emptying.
    When it matters: It helps avoid continuing a run with no remaining debris capacity, especially on models without auto-emptying.

    Importance: LOW

    iRobot Roomba i3+ alerts you when its dustbin is full, while the average robot vacuum does not alert you when its dustbin is full.
  • 19.35 cm narrower base station
    iRobot Roomba i3+ has a base station that is 12.2 cm wide, compared with 31.55 cm for the average robot vacuum.
    What it is: Base-station width is the side-to-side space occupied by the dock.
    When it matters: It matters when fitting a self-emptying or mop-washing station into a narrow utility area.

    Importance: LOW

    iRobot Roomba i3+ has a base station that is 12.2 cm wide, compared with 31.55 cm for the average robot vacuum.12.2 cm vs 31.55 cm
  • Includes a child lock
    iRobot Roomba i3+ includes a child lock, while the average robot vacuum has no child lock.
    What it is: A child lock disables selected buttons or controls to prevent accidental operation.
    When it matters: It is useful where children or pets may touch the robot or dock controls.

    Importance: LOW

    iRobot Roomba i3+ includes a child lock, while the average robot vacuum has no child lock.
  • 2.5 h faster charging
    iRobot Roomba i3+ takes 2 h to charge, compared with 4.5 h for the average robot vacuum.
  • 19.35 cm narrower base station
    iRobot Roomba i3+ has a base station that is 12.2 cm wide, compared with 31.55 cm for the average robot vacuum.
  • 0.3 m longer power cord
    iRobot Roomba i3+ has a 1.8 m power cord, compared with 1.5 m on the average robot vacuum.
  • 13.6 cm shallower base station
    iRobot Roomba i3+ has a base station that is 15.1 cm deep, compared with 28.7 cm for the average robot vacuum.
  • 15.3 cm shorter base station
    iRobot Roomba i3+ has a base station that is 19 cm tall, compared with 34.3 cm for the average robot vacuum.
  • Includes a child lock
    iRobot Roomba i3+ includes a child lock, while the average robot vacuum has no child lock.
  • Prevents hair tangles
    iRobot Roomba i3+ prevents hair tangles, while the average robot vacuum has no anti-tangle system.
  • Empties its dustbin automatically
    iRobot Roomba i3+ empties its dustbin automatically, while the average robot vacuum requires manual dustbin emptying.
  • Detects dirtier areas
    iRobot Roomba i3+ detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
  • Adjusts its cleaning height automatically
    iRobot Roomba i3+ adjusts its cleaning height automatically, while the average robot vacuum uses a fixed cleaning height.
  • Alerts you when its dustbin is full
    iRobot Roomba i3+ alerts you when its dustbin is full, while the average robot vacuum does not alert you when its dustbin is full.
  • 12 mm wider main brush
    iRobot Roomba i3+ uses a main brush measuring 190 mm, compared with 178 mm for the average robot vacuum.
  • Dispenses cleaning solution automatically
    iRobot Roomba i3+ dispenses cleaning solution automatically, while the average robot vacuum does not dispense cleaning solution automatically.

Total
Battery
Design
Smart Features
Cleaning
Mopping
  • 75 min shorter runtime
    iRobot Roomba i3+ runs for 75 min per charge, compared with 150 min for the average robot vacuum.
  • 1,400 mAh less battery capacity
    iRobot Roomba i3+ has a battery capacity of 1,800 mAh, compared with 3,200 mAh for the average robot vacuum.
    Grounded current sources converge on 1800 mAh battery capacity.
  • 1.6 W higher standby use
    iRobot Roomba i3+ uses 3.6 W in standby, compared with 2 W for the average robot vacuum.
  • 1.17 kg heavier robot
    iRobot Roomba i3+ weighs 4.7 kg, compared with 3.53 kg for the average robot vacuum.
  • 3 dB louder operation
    iRobot Roomba i3+ produces 68 dB of noise, compared with 65 dB for the average robot vacuum.
  • 3 kg heavier base station
    iRobot Roomba i3+ has a base station that weighs 7.3 kg, compared with 4.3 kg for the average robot vacuum.
  • More basic obstacle avoidance
    iRobot Roomba i3+ uses basic sensors obstacle avoidance, while the average robot vacuum uses hybrid.
  • More basic navigation
    iRobot Roomba i3+ uses gyroscope navigation, while the average robot vacuum uses LiDAR.
  • Does not support no-mop zones
    iRobot Roomba i3+ does not support no-mop zones, while the average robot vacuum supports configurable no-mop zones.
  • Does not store multiple maps
    iRobot Roomba i3+ does not store multiple maps, while the average robot vacuum stores multiple maps.
  • Does not update its map in real time
    iRobot Roomba i3+ does not update its map in real time, while the average robot vacuum updates its map in real time.
    Grounded no from data_scrape2/data_scrape4 (agreement or one clear no/N/A with other source empty/noisy).
  • Does not show its location in real time
    iRobot Roomba i3+ does not show its location in real time, while the average robot vacuum shows its location in real time.
  • 2 fewer cleaning modes
    The number of cleaning modes on iRobot Roomba i3+ is 2, compared with 4 on the average robot vacuum.
  • 3 fewer suction levels
    The number of suction levels on iRobot Roomba i3+ is 1, compared with 4 on the average robot vacuum.
  • Does not boost suction automatically on carpets
    iRobot Roomba i3+ does not boost suction automatically on carpets, while the average robot vacuum boosts suction on carpets automatically.
  • 1.3 L smaller dust bag
    iRobot Roomba i3+ has a 1.7 L auto-empty dust bag, compared with 3 L on the average robot vacuum.
  • Does not support zone cleaning
    iRobot Roomba i3+ does not support zone cleaning, while the average robot vacuum supports zone cleaning.
  • Does not support room-by-room cleaning
    iRobot Roomba i3+ does not support room-by-room cleaning, while the average robot vacuum supports room-by-room cleaning.
  • Has a non-washable filter
    iRobot Roomba i3+ has a non-washable filter, while the average robot vacuum has a washable filter.
  • Does not include a cleaning tool
    iRobot Roomba i3+ does not include a cleaning tool, while the average robot vacuum includes a cleaning tool.
  • Cannot mop floors
    iRobot Roomba i3+ cannot mop floors, while the average robot vacuum can mop floors.
  • Does not let you adjust the water flow
    iRobot Roomba i3+ does not let you adjust the water flow, while the average robot vacuum lets you adjust the water flow.
  • Less capable mopping system
    iRobot Roomba i3+ uses none for mopping, while the average robot vacuum uses static pad.
  • 3 fewer water-flow levels
    The number of water-flow levels on iRobot Roomba i3+ is 0, compared with 3 on the average robot vacuum.
    No mopping system, so water flow levels are not applicable.
  • More basic obstacle avoidance
    iRobot Roomba i3+ uses basic sensors obstacle avoidance, while the average robot vacuum uses hybrid.
    What it is: Obstacle avoidance technology uses sensors, cameras, LiDAR or structured light to detect objects and route around them.
    When it matters: More capable systems reduce contact with cables, shoes, pet bowls and other clutter, so the robot needs fewer rescues.

    Importance: HIGH

    iRobot Roomba i3+ uses basic sensors obstacle avoidance, while the average robot vacuum uses hybrid.basic sensors vs hybrid
  • 2 fewer cleaning modes
    The number of cleaning modes on iRobot Roomba i3+ is 2, compared with 4 on the average robot vacuum.
    What it is: Cleaning modes are the distinct automatic or targeted cleaning programs available on the robot.
    When it matters: A wider choice makes it easier to match cleaning behavior to rooms, spills, edges or quiet periods.

    Importance: MEDIUM

    The number of cleaning modes on iRobot Roomba i3+ is 2, compared with 4 on the average robot vacuum.2 vs 4
  • 3 fewer suction levels
    The number of suction levels on iRobot Roomba i3+ is 1, compared with 4 on the average robot vacuum.
    What it is: The number of suction levels shows how many power settings can be selected.
    When it matters: More levels give finer control over noise, battery use and cleaning strength on different floors.

    Importance: MEDIUM

    The number of suction levels on iRobot Roomba i3+ is 1, compared with 4 on the average robot vacuum.1 vs 4
  • More basic navigation
    iRobot Roomba i3+ uses gyroscope navigation, while the average robot vacuum uses LiDAR.
    What it is: The primary navigation technology is the main sensor system the robot uses to understand its position and plan a route.
    When it matters: It affects route efficiency, coverage and how reliably the robot returns to its dock, especially in larger or more complex homes.

    Importance: HIGH

    iRobot Roomba i3+ uses gyroscope navigation, while the average robot vacuum uses LiDAR.gyroscope vs LiDAR
  • Does not support no-mop zones
    iRobot Roomba i3+ does not support no-mop zones, while the average robot vacuum supports configurable no-mop zones.
    What it is: No-mop zones are mapped areas that the robot avoids while its mop is attached or wet.
    When it matters: They protect rugs and moisture-sensitive floors when the robot cannot lift its mop high enough.

    Importance: LOW

    iRobot Roomba i3+ does not support no-mop zones, while the average robot vacuum supports configurable no-mop zones.
  • Does not boost suction automatically on carpets
    iRobot Roomba i3+ does not boost suction automatically on carpets, while the average robot vacuum boosts suction on carpets automatically.
    What it is: Carpet boost automatically increases suction when the robot detects carpet.
    When it matters: It helps pull debris from carpet fibres without using maximum power for the entire cleaning run.

    Importance: MEDIUM

    iRobot Roomba i3+ does not boost suction automatically on carpets, while the average robot vacuum boosts suction on carpets automatically.
  • 75 min shorter runtime
    iRobot Roomba i3+ runs for 75 min per charge, compared with 150 min for the average robot vacuum.
    What it is: Runtime is how long the robot is rated to clean on one charge under the stated test mode.
    When it matters: Longer runtime matters on large floors, while recharge-and-resume can compensate for a smaller battery.

    Importance: MEDIUM

    iRobot Roomba i3+ runs for 75 min per charge, compared with 150 min for the average robot vacuum.75 min vs 150 min
  • Does not store multiple maps
    iRobot Roomba i3+ does not store multiple maps, while the average robot vacuum stores multiple maps.
    What it is: Multiple map storage keeps separate floor plans for more than one level or cleaning area.
    When it matters: It is useful in multi-storey homes because the robot does not need to rebuild the map each time it changes floors.

    Importance: LOW

    iRobot Roomba i3+ does not store multiple maps, while the average robot vacuum stores multiple maps.
Total
Overall
Battery
Design
Navigation
Cleaning
Mopping

Graphic comparison of iRobot Roomba i3+ and other robot vacuums

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Third-party reviews

United Kingdom
amazon
4.1
1475 Reviews
amazon
3.1
1382 Reviews
amazon
3.3
585 Reviews
United States
Amazon_logo.png
3.1
1407 Reviews
Amazon_logo.png
3.3
593 Reviews
Amazon_logo.png
4.0
405 Reviews

(Reviews last updated: July 2026)

What customers like about iRobot Roomba i3+?

  • Automatic dust emptying through the included Clean Base reduces routine maintenance.
  • Strong suction and deep-cleaning performance, especially useful for collecting pet hair.
  • Intelligent navigation cleans in orderly straight rows with back-and-forth movements.
  • Excellent value compared with other high-end models.
  • Supports voice commands and is easy to set up and control through the app.

What customers dislike about iRobot Roomba i3+?

  • The self-emptying base is quite loud when it pulls dirt out of the robot.
  • It lacks advanced smart mapping with the option to define specific no-go zones.
  • The app cannot be used to select and clean individual rooms in a personalised way.
  • Basic camera-free navigation can occasionally lead to bumps against furniture.

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