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iRobot Roomba i1156 review: 118 specs compared

Avg. price:~£400Max suction power:1600 PaRuntime:75 minDustbin capacity:400 mLMax threshold height:16 mm

iRobot Roomba i1156 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.

iRobot Roomba i1156
5.1/10

Overall score

Score
5.1/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 98% of models
Score components

80%

5.1

Technical score

20%

?

User score

â–¼Worse than 98% of robot vacuums
6.1

Value for money

Value for money
6.1/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components

70%

5.1

Overall score

30%

8.4

Price

â–¼Worse than 99%
5.1

Technical score

Technical score
5.1/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 95% of models
Score components

30%

5.4

Cleaning

23%

4.3

Navigation

18%

3.9

Mopping

12%

4.5

Battery

10%

8.9

Smart Features

7%

4.9

Design

â–¼Worse than 95%
?

User score

User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 62% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

  • irobot-roomba-i1156
  • irobot-roomba-i1156
  • irobot-roomba-i1156
irobot-roomba-i1156
irobot-roomba-i1156
irobot-roomba-i1156
Where to buy
    N/A~ £400
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of robot vacuum iRobot Roomba i1156

Technical score
Technical score
5.1/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 95% of models
Score components:

30%

5.4

Cleaning

23%

4.3

Navigation

18%

3.9

Mopping

12%

4.5

Battery

10%

8.9

Smart Features

7%

4.9

Design

5.1
User score
User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 62% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Popularity:
iRobot Roomba i1156 has a popularity index of 1, lower than that of 70.7% of robot vacuums and equal to that of 29.3% of robot vacuums.
1.0
Value for money
Value for money
6.1/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components:

70%

5.1

Overall score

30%

8.4

Price

6.1
Max suction power
1,600 Pa
Market range: <1.6k Pa – >12k Pa
This robot vacuum has a maximum suction pressure of 1,600 Pa, which is lower than 89.9% of robot vacuums and equal to 2.4% of robot vacuums.
N. of suction power levels
1
Market range: <2 – >4
This robot vacuum has 1 suction power levels, which is fewer than 92.3% of robot vacuums offer and the same number as 7.7% of robot vacuums offer.
Motor type
brushless
This robot vacuum uses a brushless motor, a type that is generally more efficient than those used by 2.7% of robot vacuums and also used by 97.3% of robot vacuums.
Power
?
Cleaning modes
2
Market range: <2 – >5
This robot vacuum offers 2 cleaning modes, which is fewer than 89.9% of robot vacuums offer and the same number as 10.1% of robot vacuums offer.
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Mopping capability
no
This robot vacuum cannot mop floors, although 79% of robot vacuums offer this feature.
Mopping system type
none
This robot vacuum uses none for mopping. This system is less effective than those on 79.8% of robot vacuums and as effective as those on 20.2% of robot vacuums.
Mop pad type
none
Mop pad material
none
Mop pressure
N/A
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Primary navigation technology
gyroscope
This robot vacuum 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
no
This robot vacuum does not map the floor, although 74.2% of robot vacuums offer this feature.
Real-time mapping
no
This robot vacuum does not update its map in real time, although 68.7% of robot vacuums offer this feature.
Multiple map storage
no
This robot vacuum does not store multiple maps, although 56.6% of robot vacuums offer this feature.
Map editing
no
This robot vacuum does not support map editing, although 64% of robot vacuums offer this feature.
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App control
yes
This robot vacuum supports app control. 5.5% of robot vacuums support app control.
App name
iRobot Home (Classic)
Wi-Fi connectivity
yes
This robot vacuum supports Wi-Fi connectivity. 6.3% of robot vacuums support Wi-Fi connectivity.
Supported Wi-Fi bands
2.4 GHz
Bluetooth connectivity
yes
This robot vacuum supports Bluetooth connectivity. 35.5% of robot vacuums support Bluetooth connectivity.
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Battery capacity
1,800 mAh
Market range: <2.4k mAh – >5.2k mAh
This robot vacuum has a battery capacity of 1,800 mAh, which is lower than 95.3% of robot vacuums and equal to 4% of robot vacuums.
Battery type
Li-ion
Battery voltage
14.4 V
Runtime
75 min
Market range: <90 min – >240 min
This robot vacuum runs for 75 min per charge, which is shorter than 94.7% of robot vacuums and equal to 3.6% of robot vacuums.
Recharge and resume
yes
This robot vacuum resumes cleaning after charging. 83.1% of robot vacuums offer this feature.
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Shape
round
Height
93 mm
Width
340 mm
Length
340 mm
Weight
3.18 kg
Market range: <2.59 kg – >4.76 kg
This robot vacuum weighs 3.18 kg, making it lighter than 67.6% of robot vacuums and the same weight as 2.3% of robot vacuums.
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iRobot Roomba i1156 vs the average robot vacuum

246810TotalBatteryDesignSmart FeaturesNavigationCleaningMopping
  • Has anti-tangle technology
    This robot vacuum has anti-tangle technology, while the average robot vacuum does not. 42.8% of robot vacuums offer this feature.
  • Empties its dustbin automatically
    This robot vacuum empties its dustbin automatically, while the average robot vacuum requires manual dustbin emptying.
  • Detects dirtier areas
    This robot vacuum detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
  • Adjusts its cleaning height automatically
    This robot vacuum adjusts its cleaning height automatically, while the average robot vacuum uses a fixed cleaning height.
  • 2.5 h shorter charging time
    This robot vacuum takes less time to recharge fully than the average robot vacuum (2 h vs 4.5 h). The average robot vacuum takes 4.5 h.
    2 h vs 4.5 h
  • Dustbin full alert
    This robot vacuum alerts you when its dustbin is full, while the average robot vacuum does not. 19.5% of robot vacuums offer a dustbin full indicator.
  • Has a child lock
    This robot vacuum has a child lock, while the average robot vacuum does not. 44.9% of robot vacuums offer this.
  • 10.9% lighter
    This robot vacuum is lighter than the average robot vacuum (3.2 kg vs 3.57 kg). The average robot vacuum weighs 3.57 kg.
    3.18 kg vs 3.57 kg
  • 2.5 h shorter charging time
    This robot vacuum takes less time to recharge fully than the average robot vacuum (2 h vs 4.5 h). The average robot vacuum takes 4.5 h.
    2 h vs 4.5 h
  • 10.9% lighter
    This robot vacuum is lighter than the average robot vacuum (3.2 kg vs 3.57 kg). The average robot vacuum weighs 3.57 kg.
    3.18 kg vs 3.57 kg
  • Has a child lock
    This robot vacuum has a child lock, while the average robot vacuum does not. 44.9% of robot vacuums offer this.
  • Has anti-tangle technology
    This robot vacuum has anti-tangle technology, while the average robot vacuum does not. 42.8% of robot vacuums offer this feature.
  • Empties its dustbin automatically
    This robot vacuum empties its dustbin automatically, while the average robot vacuum requires manual dustbin emptying.
  • Detects dirtier areas
    This robot vacuum detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
  • Adjusts its cleaning height automatically
    This robot vacuum adjusts its cleaning height automatically, while the average robot vacuum uses a fixed cleaning height.
  • Dustbin full alert
    This robot vacuum alerts you when its dustbin is full, while the average robot vacuum does not. 19.5% of robot vacuums offer a dustbin full indicator.
  • More basic obstacle avoidance
    This robot vacuum uses basic sensors for obstacle avoidance, while the average robot vacuum uses hybrid.
    basic sensors vs hybrid
  • 2,400 Pa weaker maximum suction
    This robot vacuum has weaker maximum suction than the average robot vacuum (1,600 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    1,600 Pa vs 4,000 Pa
  • 2 fewer cleaning modes
    This robot vacuum offers fewer cleaning modes than the average robot vacuum (2 vs 4). The average robot vacuum offers 4 cleaning modes.
    2 vs 4
  • 3 fewer suction power levels
    This robot vacuum offers fewer suction power levels than the average robot vacuum (1 vs 4). The average robot vacuum offers 4 suction power levels.
    1 vs 4
  • More basic navigation
    This robot vacuum uses gyroscope for navigation, while the average robot vacuum uses LiDAR.
    gyroscope vs LiDAR
  • Does not detect carpets automatically
    This robot vacuum does not detect carpets automatically, while the average robot vacuum detects carpets automatically.
  • No no-mop zones
    This robot vacuum does not support no-mop zones, while the average robot vacuum does. 53.1% of robot vacuums support this feature.
  • Does not boost suction automatically on carpets
    This robot vacuum does not boost suction automatically on carpets, while the average robot vacuum boosts suction on carpets automatically.
  • 24.5% worse value for money
    iRobot Roomba i1156 has worse value for money than the average robot vacuum (6.09 vs 7.6).
    6.09 vs 7.59
  • 6.53x less popular
    iRobot Roomba i1156 is less popular than the average robot vacuum (1 vs 6.5).
    1 vs 6.53
  • 53.9% more expensive
    iRobot Roomba i1156 is more expensive than the average robot vacuum (£400 vs £260).
    £400 vs £260
  • 75 min shorter runtime
    This robot vacuum runs for less time per charge than the average robot vacuum (75 min vs 150 min). The average robot vacuum runs for 150 min.
    75 min vs 150 min
  • 1,400 mAh smaller battery capacity
    This robot vacuum has a smaller battery capacity than the average robot vacuum (1,800 mAh vs 3,200 mAh). The average robot vacuum has a battery capacity of 3,200 mAh.
    1,800 mAh vs 3,200 mAh
  • 1.6 W higher standby power consumption
    This robot vacuum draws more power in standby than the average robot vacuum (3.6 W vs 2 W). The average robot vacuum draws 2 W in standby.
    3.6 W vs 2 W
  • Older model
    This robot vacuum was released in 2019, earlier than the average robot vacuum in 2023. The average release year for robot vacuums is 2023.
    2019 vs 2023
  • 12 dB louder
    This robot vacuum has a higher reported cleaning noise level than the average robot vacuum (77 dB vs 65 dB). The average robot vacuum has a reported noise level of 65 dB.
    77 dB vs 65 dB
  • More basic obstacle avoidance
    This robot vacuum uses basic sensors for obstacle avoidance, while the average robot vacuum uses hybrid.
    basic sensors vs hybrid
  • More basic navigation
    This robot vacuum uses gyroscope for navigation, while the average robot vacuum uses LiDAR.
    gyroscope vs LiDAR
  • No no-mop zones
    This robot vacuum does not support no-mop zones, while the average robot vacuum does. 53.1% of robot vacuums support this feature.
  • Does not map the floor
    This robot vacuum does not map the floor, while the average robot vacuum maps the floor.
  • Does not support map editing
    This robot vacuum does not support map editing, while the average robot vacuum lets you edit maps.
  • Does not store multiple maps
    This robot vacuum does not store multiple maps, while the average robot vacuum stores multiple maps.
  • Does not recognize individual rooms
    This robot vacuum does not recognize individual rooms, while the average robot vacuum recognizes individual rooms.
  • Does not update its map in real time
    This robot vacuum does not update its map in real time, while the average robot vacuum updates its map in real time.
  • 4 mm lower threshold clearance
    This robot vacuum can only cross lower thresholds than the average robot vacuum (16 mm vs 20 mm). The average robot vacuum can cross thresholds up to 20 mm high.
    16 mm vs 20 mm
  • Does not support virtual boundaries
    This robot vacuum does not support virtual boundaries, while the average robot vacuum supports virtual boundaries.
  • Does not show its location in real time
    This robot vacuum does not show its location in real time, while the average robot vacuum shows its location in real time.
  • 2,400 Pa weaker maximum suction
    This robot vacuum has weaker maximum suction than the average robot vacuum (1,600 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    1,600 Pa vs 4,000 Pa
  • 2 fewer cleaning modes
    This robot vacuum offers fewer cleaning modes than the average robot vacuum (2 vs 4). The average robot vacuum offers 4 cleaning modes.
    2 vs 4
  • 3 fewer suction power levels
    This robot vacuum offers fewer suction power levels than the average robot vacuum (1 vs 4). The average robot vacuum offers 4 suction power levels.
    1 vs 4
  • Does not detect carpets automatically
    This robot vacuum does not detect carpets automatically, while the average robot vacuum detects carpets automatically.
  • Does not boost suction automatically on carpets
    This robot vacuum does not boost suction automatically on carpets, while the average robot vacuum boosts suction on carpets automatically.
  • Does not support zone cleaning
    This robot vacuum does not support zone cleaning, while the average robot vacuum supports zone cleaning.
  • Does not support room-by-room cleaning
    This robot vacuum does not support room-by-room cleaning, while the average robot vacuum supports room-by-room cleaning.
  • Non-washable filter
    This robot vacuum does not have a washable filter, while the average robot vacuum does. 72.5% of robot vacuums have a washable filter.
  • More basic filter
    This robot vacuum uses a high-efficiency filter, while the average robot vacuum uses HEPA.
    high-efficiency vs HEPA
  • Does not include a cleaning tool
    This robot vacuum does not include a cleaning tool, while the average robot vacuum includes a cleaning tool.
  • 8 mm narrower main brush
    This robot vacuum has a narrower main brush than the average robot vacuum (170 mm vs 178 mm). The average robot vacuum has a main brush 178 mm wide.
    170 mm vs 178 mm
  • Cannot mop floors
    This robot vacuum cannot mop floors, while the average robot vacuum can mop floors.
  • No water flow control
    This robot vacuum does not support water flow control, while the average robot vacuum does. 70% of robot vacuums support water flow control.
  • Less capable mopping system
    This robot vacuum uses none for mopping, while the average robot vacuum uses static pad.
    none vs static pad
  • 3 fewer water flow levels
    This robot vacuum offers fewer water flow levels than the average robot vacuum (0 vs 3). The average number of water flow levels is 3.
    0 vs 3

Third-party reviews

What customers like about iRobot Roomba i1156

  • Powerful suction performance on carpets and hard floors compared to older models
  • Anti-tangling dual rubber brushrolls work effectively at picking up pet hair
  • Dirt Detect technology senses and focuses heavily on high-traffic, extra dirty areas
  • User-friendly mobile app setup takes around ten minutes to complete
  • Navigates systematically in neat parallel lines rather than moving completely at random
  • Automatically recharges itself and resumes cleaning from where it previously stopped
  • Compatible with a self-emptying base station for more convenient debris disposal

What customers don't like about iRobot Roomba i1156

  • Prone to getting stuck on thick rugs and trapped under low-profile furniture
  • Small dustbin capacity that requires manual emptying after almost every cycle
  • Lacks advanced permanent smart mapping capabilities like no-go zones or targeted room-by-room selection
  • No built-in mopping capabilities to clean liquid spills or hard stains
  • Motor emits a loud and disruptive noise level during standard operation
  • Battery drains quickly during heavy-duty cleaning cycles on large floor plans
  • Struggles with picking up extra bulky or ultra-fine debris items efficiently

Verdict

The iRobot Roomba i1156 is a smart robotic vacuum designed for multi-surface cleaning, featuring a 13.5-inch width, a 3.6-inch height, and a weight of 7 lbs. Driven by an 1800 mAh lithium-ion battery, it delivers 10x Power-Lifting Suction compared to the 600 series using a 3-Stage Cleaning System and dual anti-tangle multi-surface rubber brushes ideal for pet hair. Its main pros include efficient straight-line navigation, a 0.4-litre washable AeroForce collection bin, voice assistant integration (Alexa/Google Assistant), smart "Recharge and Resume" functionality, and patented Dirt Detect technology that automatically focuses on higher-traffic zones. However, its notable cons include a relatively loud operating noise level, a lack of advanced interactive room-by-room mapping or virtual boundary lines, and a lack of wet-mopping or self-emptying capabilities.

Compare iRobot Roomba i1156 with other robot vacuums

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