7.64
iRobot
iRobot Roomba S9 (9150)
$469.99$949.00across 2 retailers
The iRobot Roomba S9 (9150) Robot Vacuum offers powerful suction, excellent navigation, and has features that make it a top choice, especially for pet owners. However, it struggles in complete darkness and has a shorter battery life compared to some competitors. If these drawbacks aren't dealbreakers, this Roomba could be a great fit for maintaining a cleaner home with minimal intervention.
Lowest at any Popular Retailer
$899.88 at BrandsMart USAWhere to Buy
Prices last updated: April 20th 2026 12:16 pm
Product Score
Based on professional reviews and customer feedback
7.64/10
Overall
8.98
Expert
6.3
Consumer
Why this score?
The iRobot Roomba S9 (9150) earns a high score due to its exceptional cleaning performance and advanced features like powerful suction, smart mapping, and a self-emptying dustbin, making it ideal for homes with pets. However, it faces criticism for issues such as connectivity problems, errors related to the lid and mapping inconsistencies, which some users find frustrating. Despite its premium price, those prioritizing effective cleaning may find the investment worthwhile, though potential buyers should be aware of the mixed user experiences regarding reliability and support.
8+ Excellent6-8 Good4-6 Average<4 Poor
Score
The iRobot Roomba S9 (9150) earns a high score due to its exceptional cleaning performance and advanced features like powerful suction, smart mapping, and a self-emptying dustbin, making it ideal for homes with pets. However, it faces criticism for issues such as connectivity problems, errors related to the lid and mapping inconsistencies, which some users find frustrating. Despite its premium price, those prioritizing effective cleaning may find the investment worthwhile, though potential buyers should be aware of the mixed user experiences regarding reliability and support.
8.98/10
Expert
6.3/10
Consumer
Pros
- •Excellent navigation and persistent mapping for efficient cleaning.
- •Works well in dimly lit conditions (with initial training runs).
- •Rarely requires manual intervention, runs multiple times a day smoothly.
- •Rubber brush rollers are superior for pet hair and agitating carpet.
- •Support for future software updates like Keep Out Zones.
- •Not necessary to empty the bin frequently due to the dirt disposal system.
- •Responsive and custom cleaning via Alexa integration.
- •Suction power is strong, comparable to or better than other brands tested.
Cons
- •Not capable of operating in complete darkness without smart lights.
- •Shorter battery life compared to some competitors, requiring strategic scheduling.
Bottom Line
The iRobot Roomba S9 (9150) Robot Vacuum offers powerful suction, excellent navigation, and has features that make it a top choice, especially for pet owners. However, it struggles in complete darkness and has a shorter battery life compared to some competitors. If these drawbacks aren't dealbreakers, this Roomba could be a great fit for maintaining a cleaner home with minimal intervention.
Customer Ratings
3.5629 reviews
5
50%
4
9%
3
7%
2
9%
1
25%
Based on 629 reviews from Amazon
Professional Reviews
iRobot Roomba S9 Review: A Robovac That Nailed It
WIRED·Adrienne So
iRobot Roomba S9+: The Ultimate Robot Vacuum for Pet Owners
Homes & Gardens·Alex Frost
iRobot Roomba S9 (9150) Review
Consumer Reports
iRobot Roomba S9+ review
t3.com·Derek Adams
iRobot Roomba s9 Plus Review: A nearly perfect robot
Digital Trends·Terry Walsh·4 years ago
Bleeding Edge Design & Performance
Modern Castle·Derek Hales·6 years ago
Common Questions
The Roomba S9 is pretty good at finding its way around, thanks to its Smart Mapping technology that creates personalized maps of your home. It can store up to 10 different floor plans, which is handy ...
Read full answer📚More About iRobot Roomba S9 (9150)
📝
TLDR Review: iRobot Roomba S9 (9150)
The iRobot Roomba S9 (9150) earns a high score due to its exceptional cleaning performance and advanced features like powerful suction, smart mapping, and a self-emptying dustbin, making it ideal for homes with pets. However, it faces criticism for issues such as connectivity problems, errors related to the lid and mapping inconsistencies, which some users find frustrating. Despite its premium price, those prioritizing effective cleaning may find the investment worthwhile, though potential buyers should be aware of the mixed user experiences regarding reliability and support.
TLDR Review·1 years ago
7.64
Overall
🤖
Does the Roomba S9 get stuck often?
Q&A·1 years ago
🧹
How often do you need to empty the Roomba S9's dust bin?
Q&A·1 years ago
🏠
Can the Roomba S9 clean multiple floors/levels?
Q&A·1 years ago
Discussion
Alternatives to Consider
If the iRobot Roomba S9 (9150) doesn't quite fit your needs, here are some other options to consider:
Roborock S8+
Why: Advanced Navigation and Mopping
The Roborock S8+ boasts an advanced dual-sensor navigation system, merging LIDAR and 3D scanning cameras for accurate mapping and effective obstacle avoidance. It also features an ultrasonic mopping system that tackles tough stains, making it a powerful and multifunctional option over the iRobot Roomba S9.
Dreametech DreameBot D10 Plus
Why: Self-Emptying and Cost-Effective
Looking for a budget-friendly option? The Dreametech DreameBot D10 Plus offers self-emptying capabilities and built-in mopping at a competitive price. It navigates various surfaces effectively, providing solid performance without the premium cost associated with the Roomba S9.
iRobot Roomba j7+
From $299.99
Why: Real-Time Hazard Avoidance
The iRobot Roomba j7+ features advanced AI technology for real-time hazard avoidance, making it an excellent option for families with pets. While it may not have the suction power of the S9, it excels with its automation features and the peace of mind it offers when cleaning around obstacles.
Compare prices →
Roborock Q5+
Why: Great Value with Robust Features
The Roborock Q5+ is a great pick for those looking for efficient cleaning at a lower cost. It features self-emptying capabilities and a user-friendly app for controlling cleaning sessions. While it may lack some of the high-end features of the S9, it still offers effective coverage and ease of use.
Wyze Robot Vacuum
Why: Effective in Low Light Conditions
The Wyze Robot Vacuum features LIDAR navigation that performs well in low-light situations, offering better coverage than the Roomba S9 in similar environments. It provides a strong balance of features and performance at a more affordable price, making it a reliable choice for various household needs.
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