Kenn is a writer that’s fascinated by all things tech. Having been born curious about how everything works, he spends his time taking things apart to put them back together, and shares what he finds out through writing.
Product testers lauded the iRobot Roomba S9, recommending it for both carpeted and bare floors. They were pleased with its excellent dirt and pet hair pickup power and HEPA filter.
However, they were disappointed that it has recurring running costs and has no mopping attachment.
We’re reader-supported. Commissions finance our mission. Our ‘True Score‘ system independently powers ratings. Learn more
Table of Contents
Product Snapshot
Overview
The iRobot Roomba S9 is a high-end robot vacuum released in 2019, promising smart Wi-Fi features and deep cleaning power. This model features on our list of the best-rated vacuum cleaners on the market.
It has a HEPA filter, which captures 99.97% of airborne particles as small as 0.3 microns. A companion mobile app supports mapping and scheduling. This vacuum uses an advanced iAdapt 3.0 navigation technology, maneuvering quite well.
Continue reading our iRobot Roomba S9 review and explore how it matches up against the top robot vacuums available today.
Consensus
our Verdict
Top critics were impressed by the IRobot Roomba S9, recommending it for bares floor and carpets. Using the iAdapt 3.0 navigation system, this robot vacuum moved around systemically during experiments.
Explore our IRobot Roomba j7+ review for a model with an even more advanced hazard detection navigation system. During testing, researchers established that it has an impressive 155-minute runtime.
Editors at Tech Radar hailed the vacuum’s large 0.5L dust compartment, which is larger than the 0.2L dirt cup of the Narwal T10. This vacuum cleaner has a HEPA filter, and it effectively sealed off captured dust particles during testing.
Professional reviewers at Tom’s Guide were pleased with its performance, although it has relatively low 0.05 kPa tested suction power. It collected 98% of the large debris on bare floors and 93% on low-pile carpets.
Researchers praised its low 65.2 dBA maximum noise rating during experiments. However, it doesn’t have a mopping attachment. Check out our iRobot Roomba 692 Review if you need a mopping robot vacuum.
ReasonS to Buy
Outstanding build quality
Excellent battery life
Advanced mapping and navigation technology
Good performance on hard floors and carpets
Good pet hair pickup rate
Reason to Avoid
Expensive maintenance
Lacks mopping function
iRobot Roomba S9 Specs
Auto Docking & Recharging
Yes
Bin Capacity
0.1 gal
Carpet Height Adjustments
Yes
Cleaning Path Width
10.7"
Cliff Sensor
Unknown
Compatible Floor Type
All floors
Filter Type
Other
Hypoallergenic
Unknown
Mop Feature
–
Pet
Yes
Product Weight
8.15 lbs
Room-by-Room navigation
Unknown
Self-Emptying
No
Sensor Type
Infrared, Photocell
Smart App
iRobot
Works With
Amazon Alexa, Google Assistant
All Specs
Test Results
These are the most important criteria to test for Vacuum Cleaners based on our comprehensive Testing Methodology.
Bare Floor Performance (% of Debris Cleaned)
98.25
Carpet Performance (% of Debris Cleaned)
57.12
Pet Hair Performance (% of Debris Cleaned)
98.66
Noise level (dB)
65.2
Battery Life (Minutes)
102
Can You Trust What You Read Online?
Fake reviews are taking over tech journalism—45% of sites are faking product tests. Don’t be misled.
Sign up now for exclusive access to Gadget Review’s bombshell investigation and uncover the truth about tech journalism.
Plus, stay ahead with our daily newsletter, packed with insights you can trust.
The iRobot Roomba S9 is a high-end robot vacuum released in 2019, promising smart Wi-Fi features and deep cleaning power. This model features on our…
The iRobot Roomba S9 is a high-end robot vacuum released in 2019, promising smart Wi-Fi features and deep cleaning power. This model features on our list of the best-rated vacuum cleaners on the market.
It has a HEPA filter, which captures 99.97% of airborne particles as small as 0.3 microns. A companion mobile app supports mapping and scheduling. This vacuum uses an advanced iAdapt 3.0 navigation technology, maneuvering quite well.
Continue reading our iRobot Roomba S9 review and explore how it matches up against the top robot vacuums available today.
The iRobot Roomba S9 has a much better 155-minute battery life than the iRobot Roomba i7, which runs for up to 74 minutes on a…
The iRobot Roomba S9 has a much better 155-minute battery life than the iRobot Roomba i7, which runs for up to 74 minutes on a single charge. The S9 robot vacuum also performs better on all floor types, removing 98% of the large debris on bare floors compared to the 57% rate of the i7.
The IRobot Roomba S9 has more recurring costs, requiring regular replacement of the HEPA filter than the Roborock S7, which doesn’t need regular filter replacement….
The IRobot Roomba S9 has more recurring costs, requiring regular replacement of the HEPA filter than the Roborock S7, which doesn’t need regular filter replacement. The Roomba also has a bigger 0.5L dirt compartment than the 0.25L dust cup of the Roborock S7 robot vacuum.
The Dyson 360 Heurist presents less running costs, featuring washable filters, while the iRobot Roomba S9 requires filter replacement every two months. However, the Roomba…
The Dyson 360 Heurist presents less running costs, featuring washable filters, while the iRobot Roomba S9 requires filter replacement every two months. However, the Roomba has a much lower 65.2 dBA noise rating than the 70 dBA rating of the Dyson.
