iRobot Roomba s9+

Not sold at any store we monitor today, so not in our ranking.

Customer rating ★ 3.5 from 7,607 reviews at Amazon

Where it leads robots with a self-emptying stationAll 19 facts →

3.5 inRobot heightlower than 8 of 10

Which robot is right for your home? Find out in 7 questions →

Before you buy, compare it with 2 recommended alternatives

No store here sells this model today, so beside it the highest-scored model with the same kind of station that one does, and the cheapest of the top 10.

Green is the best of these 3, also when they share the lead.

Price and ranking
	This model iRobot Roomba s9+ Best on 1 fact	Cheapest of the top 10 ILIFE A30 Pro Best on 2 facts	Highest score here Dreame D20 Plus Best on 4 facts
Lowest price	–	$249Amazon.com best	$309Amazon.com
Score			best
Rank	–	rank 3 of 14 with a self-emptying station	rank 1 of 14 with a self-emptying station
Customer rating	★ 3.5 · 7,607 reviews	★ 4.2 · 12,009 reviews best	★ 4.2 · 3,676 reviews best
Mopping
Mop type	no mop	flat or vibrating pad	flat or vibrating pad
Washes the mop	–	–	no
Station
Station same on all	self-emptying station	self-emptying station	self-emptying station
Dust bag lasts longer is better	up to 60 days	up to 49 days	up to 150 days best
Brush and obstacles
Anti-tangle brush	yes	–	yes
Climbs thresholds up to higher is better	0.6 in (16 mm)	0.6 in (15 mm)	0.8 in (20 mm) best
Size, noise and age
Robot height lower is better	3.5 in (8.9 cm) best	3.7 in (9.5 cm)	3.8 in (9.7 cm)
On the market since	May 2019	–	–

Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.

What testers say about the iRobot Roomba s9+

The iRobot Roomba s9+ is a premium vacuum-only Roomba from iRobot's high-end S series: two wide rubber brushrolls built not to tangle with pet hair, much more power than the average Roomba, a camera-based system (V-SLAM) that maps the home, and a HEPA filter. Its Clean Base empties the bin into an enclosed bag that holds up to 60 days of debris, and it works with Alexa and Google Assistant.

Carpet is its strength. For a long time the s9+ held the best score Vacuum Wars had ever seen in its carpet deep-clean test, thanks to iRobot's two-brushroll design and that extra power. It mapped the home and cleaned room by room with close to full coverage, was excellent with short pet hair and resisted tangles from long human hair better than the Roborock S7+ it was compared with, and its app stores up to ten maps, with keep-out zones and cleaning by room. RTINGS rates it as very well built, superb with pet hair on bare floors and quite good on carpet, with outstanding battery life for fairly large homes.

The limits: its brushes sit so close to the floor that it struggles a little with larger debris, and Vacuum Wars finds the no-go lines of a lidar robot more precise than those drawn on its camera map. RTINGS counts several parts that need regular cleaning or replacing, and notes that it has no obstacle recognition to spot pet waste in real time. It does not mop. For a home with a lot of carpet it is still one of the strongest vacuum-only Roombas, and with pets the j7+, with its camera obstacle recognition, is the safer pick.

iRobot Roomba s9+ specifications

The numbers that matter first, then every fact by group. As published by the maker or the store we read it from.

iRobot · on the market since May 2019

Robot height3.5 in

Climbs thresholds up to0.6 in

Runtime per charge120 min

Suction power2,200 Pa

Consumables: a 2.5 l dust bag in the station, which lasts up to 60 days.

Dimensionsrobot and dock

From the published dimensions. The dock needs a spot 11.5 in wide and 14.9 in deep.

Suction and brushes 4 facts

Suction power Suction in pascal, as the maker measures it. More pascal helps on carpet, but it says little about how well the robot picks grit off a hard floor.: 2,200 Pa
Anti-tangle brush A brush that guides hair to the side instead of letting it wind around the shaft. It saves the cutting work in homes with long hair or pets.: yes
Suitable for pet hair Whether the robot copes with pet hair: a brush that hair does not wind around and a dock that empties the bin for you. Where the maker does not say so itself, we read it from those two.: yes
Dirt detection A sensor notices where more dirt lies, at the doormat for example, and the robot cleans that patch longer or a second time.: yes

Mopping 1 fact

Mop type How the mop is built: flat pads, two spinning discs or a roller. Discs press harder on dried-on dirt, a roller rinses itself while it works.: no mop

Dock 5 facts

Empties the dust bin The dock empties the robot’s dust bin, usually after every run. You only empty the dock’s bag or bin.: yes
Bagless The dock collects dust in a bin instead of a disposable bag. No bags to buy, but you empty it yourself.: no
Dust bag capacity How much the dust bag in the dock holds.: 2.5 l
Dust bag lasts How long the maker says a dust bag lasts with daily use. With pets or a lot of carpet it is shorter.: up to 60 days
Dock size (w × d × h) The width, depth and height of the dock. Measure the spot you have in mind, and leave room for the lid and for the robot driving in.: 11.5 × 14.9 × 19 in (29.2 × 37.9 × 48.3 cm)

Navigation and obstacles 3 facts

Navigation How the robot maps your home and follows that map. Lidar measures with a laser and works in the dark, a camera looks along and recognizes more.: camera
Climbs thresholds up to The highest threshold the robot takes, as the maker states it. Measure your own: the step into a bathroom or onto a balcony is often higher.: 0.6 in (16 mm)
Recharge and resume When the battery runs low in the middle of a run, the robot recharges and then carries on where it stopped.: yes

Robot 2 facts

Robot height How tall the robot is. It decides whether it fits under your sofa, bed or cabinet.: 3.5 in (8.9 cm)
Dust bin in the robot How much dust the robot holds before you empty it. It matters less with a self-emptying dock, which empties the bin after every run.: 400 ml

Battery 1 fact

Runtime per charge How long the robot cleans on one charge, at its quietest setting. After that it recharges and carries on where it stopped.: 120 min

Smart features and warranty 3 facts

Voice assistants Which voice assistants the robot works with, such as Google Assistant or Alexa.: Alexa
Scheduled runs You set days and times, and the robot starts by itself, also when you are not at home.: yes
Home Assistant Whether the robot works with Home Assistant, the home automation software you run yourself. Official means the integration comes with Home Assistant itself, community that volunteers maintain it.: official integration

Sources: vacuumwars.com · irobot.com · amazon.com · homesupport.irobot.com · home-assistant.io

Our score

Confidence: high. Two or more labs, or one lab and 300 or more owners’ ratings. The highest score today is 7.6.

Lab tests 60%4.3

5 cleaning abilities measured, on one scale for every robot.
- Deep clean on carpet9.2
- Pet hair5.4
- Mopping0.0
- Obstacle avoidance0.0
- Navigation4.3
Measured by Vacuum Wars (read on September 29, 2026).
Owners’ ratings 25%2.6

5,000 ratings, 3.5 stars on average, at Amazon.
Features 15%–

Features, 15%: too few facts known yet, so this part is left out.

Price never countsA sale can’t lift a model. Today’s lowest price sits beside the score, checked every morning.
No test, no rankOnly robots a lab has tested are ranked. The rest get a provisional score.
Reviewers beside, not insideReviewers’ picks are shown next to the score and do not count in it.

How we work this out →

The testers’ picks

Vacuum Wars · Position 127 of 151September 26, 2026

Positions and labels, never text. These picks are shown beside the score and do not count in it. How the score comes about is on the method page.

Frequently asked questions about the iRobot Roomba s9+

Does the iRobot Roomba s9+ empty its own dust bin?

Yes. The station empties the robot’s dust bin after every run. The 2.5 l dust bag in the station lasts up to 60 days, the maker says.

Can the iRobot Roomba s9+ mop?

No, this model only vacuums.

Does the iRobot Roomba s9+ work with Alexa, Google Home or Siri?

It works with Alexa. Home Assistant has an official integration for this model.

How high a threshold can the iRobot Roomba s9+ climb?

Thresholds up to 0.6 in (16 mm), the maker says. Measure your own thresholds: the ones to a bathroom or balcony are often higher.

Does the iRobot Roomba s9+ fit under low furniture?

The robot is 3.5 in (8.9 cm) tall, so it fits under furniture with at least 3.6 in of clearance. It has no turret on top.

Is the iRobot Roomba s9+ suitable for pet hair?

Yes, the maker says. The brush guides hair to the side instead of winding it around the roller.

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