93

iRobot Roomba S9 Review

True Score

60
60
3

Experts

63
153

Consumers

Expert Rankings

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.

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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 & RechargingAuto Docking & RechargingYes
Bin CapacityBin Capacity0.1 gal
Carpet Height AdjustmentsCarpet Height AdjustmentsYes
Cleaning Path WidthCleaning Path Width10.7"
Cliff SensorCliff SensorUnknown
Compatible Floor TypeCompatible Floor TypeAll floors
Filter TypeFilter TypeOther
HypoallergenicHypoallergenicUnknown
Mop FeatureMop Feature
PetPetYes
Product WeightProduct Weight8.15 lbs
Room-by-Room navigationRoom-by-Room navigationUnknown
Self-EmptyingSelf-EmptyingNo
Sensor TypeSensor TypeInfrared, Photocell
Smart AppSmart AppiRobot
Works WithWorks WithAmazon Alexa, Google Assistant

All Specs

Test Results

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

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Product Comparison

iRobot Roomba S9 Review

True Score

60
81
83
NR

Ranking

#

93

/

99

#

32

/

99

#

16

/

99

#

/

Market Context

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.

Auto Docking & Recharging

Yes

Yes

Yes

Bin Capacity

0.1 gal

2.5 L

0.25 L, 0.35 L

Carpet Height Adjustments

Yes

Automatic

Automatic

Cleaning Path Width

10.7"

Unknown

Unknown

Cliff Sensor

Unknown

Unknown

Yes

Compatible Floor Type

All floors

All floors

Bare Floor, Carpet

Filter Type

Other

HEPA

HEPA

Hypoallergenic

Unknown

Unknown

Yes

Dig Deeper

iRobot Roomba I7+ Review →

Roborock S7 Review →

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Score Card

E

Expert Score

60

*.75

We place a 75% weighted value on Expert Test Scores

C

Customer Score

63

*.25

We place a 25% weighted value on Customer Scores

True Score

60

Any product with a True Score above 60 is a Meh

Expert Scores

  • Rtings
    103

    Category Trust Rating

    61
    The iRobot Roomba S9 is very good on bare floors. It clears pet hair and… Read More

    By:

    Dagobiet Morales Alfaro
  • Techgear Lab
    95.29

    Category Trust Rating

    76
    Meriting one of the highest scores we have seen from any robot vacuum in the… Read More

    By:

    Austin Palmer
  • Consumer Reports
    62.86

    Category Trust Rating

    NR
    If you’re after the maximum pickup that a robot can offer, the Roomba s9+ … Read More

    By:

    Unknown