Products
iRobot Roomba S9
iRobot Roomba j7+
Tested using Methodology v1.0
Updated Jun 25, 2025 02:42 PM
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Tested using Methodology v1.0
Updated Jul 17, 2025 04:05 PM
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Wet Compatible
No
Lowest Height Cleared
9.5 cm (3.7'')
Obstacle Avoidance Technology
Light-Based
Max Threshold Height
1.9 cm (0.7")
Anti-Allergy Filter (HEPA)
Yes
Wet Compatible
No
Lowest Height Cleared
8.5 cm (3.3'')
Obstacle Avoidance Technology
Camera-Based
Max Threshold Height
1.9 cm (0.7")
Anti-Allergy Filter (HEPA)
No
Our Verdict
iRobot Roomba S9
iRobot Roomba j7/j7+
The iRobot Roomba S9 and the iRobot Roomba j7+ each have their own strengths. The S9 incurs lower recurring costs, charges faster, has an automatic suction power adjustment feature, and performs better on all surface types. Like the j7+, it can also be purchased with an external dustbin and a corresponding self-emptying capability at an additional cost. Meanwhile, the j7+ has its unique hazard identification feature and weighs notably less.
Variants
- Roomba S9 (Black)
- Roomba S9+ (Black)
- Roomba j7+ (Graphite)
- Roomba j7 (Graphite)
Check Price
Black
Roomba S9
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Graphite
Roomba j7+
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Black
Roomba S9+
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Graphite
Roomba j7
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Main Differences for
Multi-Surface Household
Multi-Surface Household
Threshold
Multi-Surface Household
6.4
6.8
Station Maintenance Capabilities
0.0
6.4
Hard Floor Pickup
8.5
7.5
Full Comparison
Design
Build Quality
8.5
8.5
Build Quality Picture
Vacuum & Mop Combo
No
No
User Maintenance
7.5
7.0
Maintenance Picture
Brushroll Cleaning Video
Recurring Cost
4.5
3.0
Recurring Cost Picture
Bag Part Number
No bag
4640235
Filter Part Number
4643682
4785883
HEPA Filter Part Number
4643682
No HEPA Filter
Dimensions
Robot Vacuum Dimensions
Robot Vacuum Height
9.6 cm (3.8")
8.6 cm (3.4")
Robot Vacuum Width
31.6 cm (12.4")
33.5 cm (13.2")
Robot Vacuum Depth
31.6 cm (12.4")
34.0 cm (13.4")
Docking Station Dimensions
Docking Station Height
10.7 cm (4.2")
33.4 cm (13.1")
Docking Station Width
25.9 cm (10.2")
31.5 cm (12.4")
Docking Station Depth
36.0 cm (14.2")
39.4 cm (15.5")
Internal Dirt Compartment
8.1
6.1
Dirt Compartment Photo
Dirt Compartment Capacity
0.50 L
0.25 L
Full Indicator
Yes
Yes
Station Maintenance Capabilities
0.0
6.4
Station Photo
Auto Empty
No
Yes
Bagless Station
No Dirt Compartment
No
Dirt Compartment Capacity
0.00 L
2.40 L
Automatic Tank Refill
No
No
Mop Washing
No
No
Mop Drying
No
No
In The Box
In The Box Picture
Battery
9.2
9.1
Minimum Battery Life
49 min
102 min
Maximum Battery Life
155 min
102 min
Recharge Time
92 min
137 min
Removable Batteries
Yes
Yes
Quality-Of-Life Features
Picture Of Controls
Power Adjustment
Yes
No
Easy On/Off
Yes
Yes
Surface Type Adjustment
Only Automatic
Only Automatic
Brushroll And Tools
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 Pickup
8.5
7.5
Hard Floor Pickup Video
Hard Floor Pickup Post Test
High-Pile Carpet Pickup
8.0
7.0
High-Pile Carpet Pickup Video
High-Pile Carpet Pickup Post Test
Low-Pile Carpet Pickup
7.5
7.0
Low-Pile Carpet Pickup Video
Low-Pile Carpet Pickup Post Test
Pet Hair Pickup
7.5
7.0
Pet Hair Pickup Video
Pet Hair Pickup Post Test
Airflow
8.2
5.8
Maximum Airflow Video
Maximum Head Airflow
16.0 CFM (0.5 m³/min)
6.0 CFM (0.2 m³/min)
Noise
7.0
7.8
Noise Video
Bare Floor
65.2 dBA
63.0 dBA
Low-Pile Carpet
64.7 dBA
57.5 dBA
Household Adaptability
7.0
7.5
Household Adaptability
Obstacle Avoidance
2.0
9.2
Obstacle Avoidance Technology
Light-Based
Camera-Based
Object Recognition
No
Yes
Obstacle Video
Bare Floor: Avoidance Rate
0%
93%
Bare Floor: Intervention Rate
40%
0%
Carpet: Avoidance Rate
0%
58%
Carpet: Intervention Rate
42%
0%
Always Avoided Pet Waste
No
Yes
Height Clearance
7.0
9.0
Height Clearance Video
Lowest Height Cleared
9.5 cm (3.7'')
8.5 cm (3.3'')
Threshold Clearance
7.0
7.0
Low Threshold Video
High Threshold Video
Max Threshold Height
1.9 cm (0.7")
1.9 cm (0.7")
Air Quality
Sealing Quality Video
Anti-Allergy Filter (HEPA)
Yes
No
Cracks
4.5
5.5
Cracks Video
Wood Cracks Post Test
Stains
1.0
1.0
Stain Video
Stain Pickup Post Test
Water
0.0
0.0
Wet Compatible
No
No
Water Video
Water Pickup Post Test
Automation
Physical Automation
8.9
8.9
Recharge And Resume
Yes
Yes
Pathing Algorithm
Smart
Smart
Physical Boundary Markers
No
No
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
Companion App Automation
8.0
7.5
Companion App Screen Grabs
App Name
iRobot HOME
iRobot HOME
Software Boundary Markers (No-Go Zones)
Yes
Yes
App Scheduled Start
Yes
Yes
App Cycle Control
Yes
Yes
Navigation Control Within App
No
No
To Be Deleted
Check Price
Black
Roomba S9
SEARCH
Amazon.com
Graphite
Roomba j7+
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BestBuy.com
Black
Roomba S9+
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Amazon.com
Graphite
Roomba j7
SEE PRICE
Amazon.com
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iRobot Roomba S9 vs iRobot Roomba j7+: Main Discussion
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