iRobot Roomba S9 (9150)
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.
Where to Buy
| Retailer | Price | Last seen | Buy |
|---|---|---|---|
P projetonem | $499.00 | Oct 24, 2022, may have changed | Buy Now |
 Best Buy 15-day returns (in store too) · free return shipping · free shipping on $35+ | $539.99 | Nov 4, 2026 | Buy Now |
S Shopping.com | $759.99 | Sep 26, 2022, may have changed | Buy Now |
 Newegg Sold by EvoMicro | $899.00 | Jun 25, 2022, may have changed | Buy Now |
 Walmart Sold by iRobot Store | $899.00 | Jul 29, 2022, may have changed | Buy Now |
Prices are collected from retailer listings; each row shows the date we last saw that price. Return and shipping terms are each store's standard policy from our retailer research (April 2026). Some products and categories have different terms, so check with the store before you buy.
Used & Refurbished
✨ See 2 used & refurbished prices with ShopSavvy ProGet the app →Price history summary
Lowest new price we recorded at major retailers (Amazon, Walmart, Best Buy, Target, The Home Depot and Lowes) in the last 90 days: $539.99 at Best Buy on Aug 25, 2026.
Range over the last 12 months: $539.99 (Best Buy, Aug 25, 2026) to $699.00 (Amazon, Aug 19, 2026). The lowest current offer at these retailers, $539.99 at Best Buy, matches its 90-day low. Based on 4 recorded prices since May 30, 2026 for offers sold by these retailers themselves (not marketplace sellers). Summary as of Nov 1, 2026.
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Product Score
Calculated by ShopSavvy from the professional reviews and customer ratings we collected for this product.
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.
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.
Scores
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
Based on 629 reviews from Amazon
Professional Reviews
iRobot Roomba s9 Plus Review: A nearly perfect robot
Bleeding Edge Design & Performance
iRobot Roomba S9 Review: A Robovac That Nailed It
iRobot Roomba S9+: The Ultimate Robot Vacuum for Pet Owners
iRobot Roomba S9 (9150) Review
iRobot Roomba S9+ review
Common Questions
Does the Roomba S9 get stuck often?Published 2 years ago
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 answerHow often do you need to empty the Roomba S9's dust bin?Published 2 years ago
How often you'll need to empty the Roomba S9+'s dust bin really depends on a few things: the size of your place, how much dirt and debris it collects, and how often you're running it. Based on our re...
Read full answerCan the Roomba S9 clean multiple floors/levels?Published 2 years ago
Yep, the iRobot Roomba S9 can handle cleaning multiple floors in your home. You don't need a separate Clean Base for each floor either. According to our research, all you need to do is carry the Room...
Read full answerHow long does it take for the Roomba S9 to map a home?Published 2 years ago
The time it takes for the Roomba S9 to map your home depends a lot on the size and complexity of your space. On average, it usually takes around 2 to 5 cleaning cycles to complete a full map. Things ...
Read full answerHow loud is the Roomba S9 while cleaning?Published 2 years ago
The Roomba S9 can be pretty noticeable when it's cleaning. Our research shows that it produces noise levels around 65-70 decibels, kind of like a regular conversation or a standard vacuum cleaner. So...
Read full answerDoes the Roomba S9 work with Alexa and Google Assistant?Published 2 years ago
Yep, the iRobot Roomba S9 works with both Alexa and Google Assistant. According to the manufacturer's product description, you can connect it to your smart home setup pretty easily. With this, you ca...
Read full answerHow well does the Roomba S9 clean carpets vs hard floors?Published 2 years ago
The iRobot Roomba S9 is pretty solid on both carpets and hard floors, but it does handle each surface a bit differently. Here's the scoop: Cleaning Carpets The S9 does a great job on carpets, thanks ...
Read full answerWhat is the battery life of the Roomba S9?Published 2 years ago
The Roomba S9 has a high-capacity lithium-ion battery and, according to the manufacturer, it can run for up to 120 minutes on a single charge. That's usually enough to tackle an average-sized home. O...
Read full answerHow does the iRobot Roomba S9 (9150) handle pet hair?Published 2 years ago
The iRobot Roomba S9 (9150) does a great job at managing pet hair. Based on our research, it has several features designed to make pet hair cleanup easier. For starters, it's got stronger suction tha...
Read full answer📚More About iRobot Roomba S9 (9150)
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+
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
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+
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+
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
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.
ShopSavvy compares prices across thousands of retailers so you always get the best deal. Prices are collected from retailer listings, and each one shows the date we last saw it. Our expert reviews and community discussion help you make informed buying decisions.