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  1. Home
  2. Robot Vacuum
  3. Compare
  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Build Quality
    2. User Maintenance
    3. Recurring Cost
    4. Dimensions
    5. Internal Dirt Compartment
    6. Station Maintenance Capabilities
    7. In The Box
    8. Battery
    9. Quality-Of-Life Features
    10. Brushroll And Tools
  5. Performance
    1. Hard Floor Pick-Up
    2. High-Pile Carpet Pick-Up
    3. Low-Pile Carpet Pick-Up
    4. Pet Hair Pick-Up
    5. Suction
    6. Airflow
    7. Noise
    8. Maneuverability
    9. Air Quality
    10. Cracks
    11. Stains
    12. Water
  6. Automation
    1. Physical Automation
    2. Companion App Automation
  7. To Be Deleted
  8. Comments

iRobot Roomba i3 vs iRobot Roomba i8+

Side-by-Side Comparison

Products

iRobot Roomba i3
iRobot Roomba i8+

Tested using Methodology v0.8

Updated Feb 11, 2025 03:16 PM

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Tested using Methodology v0.8

Updated Nov 26, 2024 02:50 PM

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iRobot Roomba i3 Picture
iRobot Roomba i8+ Picture
Wet Compatible
No
Anti-Allergy Filter (HEPA)
Yes
Wet Compatible
No
Anti-Allergy Filter (HEPA)
Yes
  1. Recommended in 1 article:
  2. iRobot

Variants

  • Roomba i3+ EVO (Woven Neutral)
  • Roomba i3 EVO (Woven Neutral)
  • Roomba i8+ (Medium Silver)

Review

See iRobot Roomba i3 Review
See iRobot Roomba i8+ Review
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Our Verdict

iRobot Roomba i3

iRobot Roomba i8+

The iRobot Roomba i8+ is better than the iRobot Roomba i3. The i8+ has a longer overall battery life, delivers superior performance on bare floors as well as carpets, and does a better job of maneuvering itself.

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Check Price

Woven Neutral
Roomba i3+ EVO
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Medium Silver
Roomba i8+
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Woven Neutral
Roomba i3 EVO
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Medium Silver
Roomba i8+
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Medium Silver
Roomba i8+
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Medium Silver
Roomba i8+
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Medium Silver
Roomba i8+
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Main Differences for
Bare Floor

Threshold 

0.10

Bare Floor 

6.5
6.5
No major differences between these robot vacuums for bare floor. See full list of tests below.

Full Comparison

Design

Build Quality 
 

8.0
8.0

Build Quality Picture  

iRobot Roomba i3 Build Quality Picture
iRobot Roomba i8+ Build Quality Picture

Vacuum & Mop Combo 
 

No
No
Show text

User Maintenance 
 

7.5
7.5

Maintenance Picture  

iRobot Roomba i3 Maintenance Picture
iRobot Roomba i8+ Maintenance Picture

Brushroll Cleaning Video  

Show text

Recurring Cost 
 

3.0
3.0

Recurring Cost Picture  

iRobot Roomba i3 Recurring Cost Picture
iRobot Roomba i8+ Recurring Cost Picture

Bag Part Number  

4640235
4640235

Filter Part Number  

4639161
4639161

HEPA Filter Part Number  

4639161
4639161
Show text

Dimensions 
 

Robot Vacuum Dimensions  

iRobot Roomba i3 Robot Vacuum Dimensions
iRobot Roomba i8+ Robot Vacuum Dimensions

Robot Vacuum Height  

9.4 cm (3.7")
9.2 cm (3.6")

Robot Vacuum Width  

33.9 cm (13.3")
33.5 cm (13.2")

Robot Vacuum Depth  

34.3 cm (13.5")
33.5 cm (13.2")

Docking Station Dimensions  

iRobot Roomba i3 Docking Station Dimensions
iRobot Roomba i8+ Docking Station Dimensions

Docking Station Height  

48.4 cm (19.1")
48.4 cm (19.1")

Docking Station Width  

31.1 cm (12.2")
31.0 cm (12.2")

Docking Station Depth  

38.9 cm (15.3")
38.9 cm (15.3")
Show text

Internal Dirt Compartment 
 

6.1
6.1

Dirt Compartment Photo  

iRobot Roomba i3 Dirt Compartment Photo
iRobot Roomba i8+ Dirt Compartment Photo

Dirt Compartment Capacity 
 

0.25 L
0.25 L

Full Indicator 
 

Yes
Yes
Show text

Station Maintenance Capabilities 
 

6.4
6.4

Station Photo  

iRobot Roomba i3 Station Photo
iRobot Roomba i8+ Station Photo

Auto Empty 
 

Yes
Yes

Bagless Station 
 

No
No

Dirt Compartment Capacity 
 

2.40 L
2.40 L

Automatic Tank Refill 
 

No
No

Mop Washing 
 

No
No

Mop Drying 
 

No
No
Show text

In The Box 
 

In The Box Picture  

iRobot Roomba i3 In The Box Picture
iRobot Roomba i8+ In The Box Picture
Show text

Battery 
 

8.9
9.2

Minimum Battery Life 
 

87 min
110 min

Maximum Battery Life 
 

87 min
110 min

Recharge Time 
 

94 min
99 min

Removable Batteries 
 

Yes
Yes
Show text

Quality-Of-Life Features 
 

Picture Of Controls  

iRobot Roomba i3 Picture Of Controls
iRobot Roomba i8+ Picture Of Controls

Power Adjustment 
 

No
No

Easy On/Off 
 

Yes
Yes

Surface Type Adjustment 
 

Only Automatic
Only Automatic
Show text

Brushroll And Tools 
 

Brushroll And Tools Photo  

iRobot Roomba i3 Brushroll And Tools Photo
iRobot Roomba i8+ Brushroll And Tools Photo

Brushroll Setup 
 

Dual
Dual

Brushroll Type 
 

Rubber
Rubber

Side Brush Setup 
 

Single
Single

Side Brush Type 
 

Fixed
Fixed
Performance

Hard Floor Pick-Up 
 

6.5
6.5

Hard Floor Pick-Up Video  

Hard Floor Pick-Up Post Test  

iRobot Roomba i3 Hard Floor Pick-Up Post Test
iRobot Roomba i8+ Hard Floor Pick-Up Post Test
Show text

High-Pile Carpet Pick-Up 
 

7.5
7.0

High-Pile Carpet Pick-Up Video  

High-Pile Carpet Pick-Up Post Test  

iRobot Roomba i3 High-Pile Carpet Pick-Up Post Test
iRobot Roomba i8+ High-Pile Carpet Pick-Up Post Test
Show text

Low-Pile Carpet Pick-Up 
 

7.0
7.0

Low-Pile Carpet Pick-Up Video  

Low-Pile Carpet Pick-Up Post Test  

iRobot Roomba i3 Low-Pile Carpet Pick-Up Post Test
iRobot Roomba i8+ Low-Pile Carpet Pick-Up Post Test
Show text

Pet Hair Pick-Up 
 

8.0
7.5

Pet Hair Pick-Up Video  

Pet Hair Pick-Up Post Test  

iRobot Roomba i3 Pet Hair Pick-Up Post Test
iRobot Roomba i8+ Pet Hair Pick-Up Post Test
Show text

Suction 
 

5.3
0.0

Suction Video  

Maximum Head Suction 
 

0.1 inH₂O (0.03 kPa)
0.0 inH₂O (0.00 kPa)

Normal Head Suction 
 

0.1 inH₂O (0.03 kPa)
0.0 inH₂O (0.00 kPa)

Setting Used For Normal  

"Clean"
"Clean"
Show text

Airflow 
 

5.7
5.7

Maximum Airflow Video  

Maximum Head Airflow 
 

5.8 CFM (0.2 m³/min)
5.8 CFM (0.2 m³/min)
Show text

Noise 
 

7.6
7.7

Noise Video 
 

Bare Floor 
 

63.8 dBA
62.7 dBA

Low-Pile Carpet 
 

59.5 dBA
60.0 dBA
Show text

Maneuverability 
 

8.0
8.5

Maneuverability Video  

Show text

Air Quality 
 

Sealing Quality Video  

Anti-Allergy Filter (HEPA) 
 

Yes
Yes
Show text

Cracks 
 

4.5
4.5

Cracks Video  

Wood Cracks Post Test  

iRobot Roomba i3 Wood Cracks Post Test
iRobot Roomba i8+ Wood Cracks Post Test
Show text

Stains 
 

1.0
1.0

Stain Video  

Stain Pickup Post Test  

iRobot Roomba i3 Stain Pickup Post Test
iRobot Roomba i8+ Stain Pickup Post Test
Show text

Water 
 

0.0
0.0

Wet Compatible 
 

No
No

Water Video  

Water Pickup Post Test  

iRobot Roomba i3 Water Pickup Post Test
iRobot Roomba i8+ Water Pickup Post Test
Show text
Automation

Physical Automation 
 

8.9
8.9

Recharge And Resume 
 

Yes
Yes

Pathing Algorithm 
 

Smart
Smart

Physical Boundary Markers 
 

No
Yes

Scheduled Start Buttons 
 

No
No

Cycle Control Buttons 
 

On-Board Only
On-Board Only

Navigation Control Buttons 
 

Return To Base Only
Return To Base Only
Show text

Companion App Automation 
 

8.0
8.0

Companion App Screen Grabs  

iRobot Roomba i3 Companion App Screen Grabs
iRobot Roomba i8+ Companion App Screen Grabs

App Name 
 

iRobot HOME
iRobot HOME

Software Boundary Markers (No-Go Zones) 
 

No
Yes

App Scheduled Start 
 

Yes
Yes

App Cycle Control 
 

Yes
Yes

Navigation Control Within App 
 

No
No
Show text
To Be Deleted

Check Price

Woven Neutral
Roomba i3+ EVO
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Medium Silver
Roomba i8+
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Woven Neutral
Roomba i3 EVO
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Medium Silver
Roomba i8+
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Medium Silver
Roomba i8+
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Medium Silver
Roomba i8+
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Medium Silver
Roomba i8+
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Back to Top

iRobot Roomba i3

iRobot Roomba i8+

Comments

  1. Comparison
 • Posted 1 year ago

iRobot Roomba i3 vs iRobot Roomba i8+: Main Discussion

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