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Roomba J7 vs. S9 Comparison Review

Roomba S9

This Roomba J7 vs. S9 comparison review seeks to find out whether or not the latest release from iRobot, the J7, has matched the superiority of the Roomba S9.

Just like other robot vacuum brands, iRobot updates its product portfolio frequently with much better models and, at times, upgrades to the entry-level models. Recently, the company unveiled the Roomba J7 and J7+. With the new additions, buyers can be in a dilemma on which model to go for as they don’t know what makes the two different.

This article has compared all the critical aspects of these two vacuums, from their design and cleaning performance to autonomy and smart features.

Comparison Table

iRobot Roomba j7 (7150)...
iRobot Roomba S9 (9150)...
Star Rating
Dimensions
13.34 x 13.3 x 3.4 inches
12.25" x 12.25" x 3.5"
Weight
7.5 pounds
8.2 pounds
Suction Power
1700 Pa
2200 Pa
Navigation
Brand new Genius Technology and PrecisionVision Navigation
iAdapt 3.0, vSLAM and Mapping
Dirt Detection
Filter
HEPA-style
High-Efficiency filter and Anti-Allergen System
Dustbin
300 ml
500-550 ml
Mopping
Auto Dirt Disposal
Runtime
100 minutes
120 minutes
WiFi Connectivity
iRobot Roomba j7 (7150)...
Star Rating
Dimensions
13.34 x 13.3 x 3.4 inches
Weight
7.5 pounds
Suction Power
1700 Pa
Navigation
Brand new Genius Technology and PrecisionVision Navigation
Dirt Detection
Filter
HEPA-style
Dustbin
300 ml
Mopping
Auto Dirt Disposal
Runtime
100 minutes
WiFi Connectivity
iRobot Roomba S9 (9150)...
Star Rating
Dimensions
12.25" x 12.25" x 3.5"
Weight
8.2 pounds
Suction Power
2200 Pa
Navigation
iAdapt 3.0, vSLAM and Mapping
Dirt Detection
Filter
High-Efficiency filter and Anti-Allergen System
Dustbin
500-550 ml
Mopping
Auto Dirt Disposal
Runtime
120 minutes
WiFi Connectivity

Last update on 2021-11-06 / Affiliate links / Images from Amazon Product Advertising API

Roomba J Series (J7 vs. J7+)

Roomba J7
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In September 2021, iRobot released a new Roomba series called the J Series. Unlike the Roomba S Series, this one is not an all-rounder. It is suitable for vacuuming bare floors and pet messes. But when it comes to carpets, it can satisfactorily handle low pile carpets only. However, there are a few unique features that only the J Series Roombas boast.

Just like the I and S Series Roombas, the J Series has two models. First, the base model, Roomba J7 (7150), doesn’t come with the iRobot Clean Base® Automatic Dirt Disposal unit and Dirt Disposal Bags, but it is compatible with the automatic self-emptying bin technology. On the other hand, the J7+ (7150) comes with these accessories.

Roomba J7 vs. S9 Face to Face Comparison Review

Now, onto the main business of the day, how does the Roomba J7 compare to the S9? Has the new Roomba ended the S Series’ dominance? Let’s find out.

1. Design and Aesthetics

To start this Roomba S Series vs. J Series comparison review, let’s assess how the duo compares in terms of design and aesthetics.

Important

Remember here; the aim is to buy a low-profile robot vacuum that can creep under low-profile furniture. This is where most dirt hides.

Roomba J7 Design and Aesthetics

Roomba J7 Design

The Roomba J7 is different from the S7 in terms of shape. This one is a round-shaped robot vacuum, but it maintains the same low profile design to allow it to go under low profile furniture such as kickstands, sofas, beds, etc.

When it comes to the dimensions, the J7 (robot only) measures 13.3 inches width x 3.4 inches high. As for the Clean Base Automatic Dirt Disposal Unit, things have taken a twist. The J7’s Clean Base Automatic Dirt Disposal Unit is shorter, wider, and has a compartment for keeping extra disposable bags..

Unlike the Roomba S9, which comes in black and gold, the J7 Series Roombas are black and silver. Another difference is that the J7 comes with a single button at the center of the top interface.

2. Cleaning Performance

The most important consideration when deciding between buying the Roomba S9 or the J7 is the cleaning performance. Here we will assess several critical aspects, including the orientation, specialty, vacuuming performance, and filtration. We will also share our exclusive cleaning test results.

Roomba S9 Cleaning Performance

Roomba S9 Cleaning Performance
The Roomba S9 is a dedicated robot vacuum; it doesn’t have the mopping function. However, it supports Imprint Link Technology, an innovation that allows it to sync with the Braava M6 robot mop for simultaneous vacuuming and mopping. In terms of specialization, the S9 is ideal for all types of bare floors, including hardwood, tile, laminate, linoleum, and vinyl, among others. It can also handle low, medium, and high pile carpets as well as Flokati and area rugs. You can also rely on the S9 to vacuum pet messes.

Like most Roombas, the S9 deploys a 3-stage cleaning system to vacuum dirt from floors and carpets. However, there are a few things that set it apart from the rest.

  • First, the S9 comes with a powerful multi-speed motor that delivers a whopping 2200pa when the high power mode, Power Boost, is activated.
  • Second, the brush system is still based on AeroForce technology. There is a dual multi-surface brushroll for agitating and lifting dirt. It is assisted by a specially designed corner brush optimized to clean deep corners and wall edges.
Important

For the record, the Roomba S9 comes with Dirt Detect Technology that detects spots with high dirt concentration, switches to Spot mode, and vacuums all the dirt.

While it’s a high-end robot vacuum, it’s unfortunate that iRobot has not equipped the S series with true-HEPA filters. Instead, the company used AeroForce high-efficiency filters that capture 99.9% of allergens, dust mites, pollen, and other elements that trigger nasal allergies or cause bad odor. In addition, there is an 0.4L onboard bin that can be emptied automatically if you have the iRobot Clean Base® Automatic Dirt Disposal. A single disposal bag can hold up to 30 days of dirt.

Roomba J7 Cleaning Performance

Roomba J7 Cleaning Performance
The Roomba J7 is not different from the S9 in terms of orientation. It is also a dedicated robot vacuum, so it won’t mop floors. However, you can sync it with the Braava M6 using Imprint Link Technology for simultaneous vacuuming and mopping. On to specialization, this robot vacuum is best for cleaning all types of bare floors, talk of hardwood, tile, laminate, vinyl, etc. It is also ideal for pet messes and carpets, but low pile carpets only.

The Roomba J7 also uses a 3-stage cleaning system where dirt is agitated, lifted, and sucked into the bin. But one major difference is the suction output. While the Roomba S9 delivers a whopping 2200 pa, the J7 uses a 2nd Gen single speed motor that manages 900pa. To loosen and lift dirt, the robot vacuum has an AeroForce dual multi-surface brushroll, which works in tandem with a side sweeping brush that reaches the deep corners and wall edges where most dirt hides.

Important

The Roomba J7 also comes with Dirt Detect, a feature designed to prioritize spots with high dirt concentration.

Regarding filtration, the S9 is similar to the J7 except for the difference in bin capacity. The J7 comes with a 0.5L onboard bin which is larger than the S9’s 0.4L bin. This Roomba is also a self-emptying robot vacuum that empties the bin after each cleaning session, so you no longer have to worry about the tedious task of manually emptying the bin daily. A single disposable bag can hold up to a month’s dirt. Last is on filtration, and here, the J7 comes with the same AeroForce high-efficiency filters that come with the S9.

3. Cleaning Test Results

As usual, we test all the robot vacuums we review. The S9 and J7 are not exceptions. Below is a chart showing how the two Roombas compare in terms of cleaning in a real household setting.

Roomba j7 vs s9 Cleaning Test Results on carpets

Roomba j7 vs s9 Cleaning Test Results on bare floor

4. Battery and Runtime

The battery and runtime of a robot vacuum is a critical consideration when looking for the best Roomba for you. In this section, we have compared the battery capacity, runtime, and charging options of Roomba J7 and S9.

Roomba J7 Battery and Runtime

Roomba J7 Battery
The Roomba J7 comes with a different battery. This is a 2210mAh Denali lithium-ion battery. It can offer up to 90 minutes of runtime, enough to handle a mid-sized apartment on a single charge.

Like the Roomba S9, the J7 will automatically dock for recharge and resume cleaning from where it left. This is courtesy of iRobot’s patented smart recharge and resume technology. The recharge time of the J7 is 2-3 hours.

5. Navigation, Mapping, and Boundary Marking

Besides cleaning performance and autonomy, it’s also important to assess the navigation and mapping system of the robot vacuums on your wishlist. So, how does Roomba S9 compare to the J7?

Roomba S9 Navigation and Mapping

Roomba S9 Navigation
The Roomba S9 is one of the most intelligent Roombas on the market. It comes with iAdapt 3.0 Navigation with Imprint Smart Mapping, a Visual Simultaneous Localization, and Mapping (VSLAM) navigation system that includes an upgraded software, an onboard camera, and a set of obstacles and cliff detection sensors. As a result, the robot can find its way around your house, avoiding obstacles such as shoes, chair legs, and so on.

When it comes to mapping, this robot has a smart mapping system that learns, maps, and adapts to your home. It also cleans using an elaborate cleaning pattern that guarantees entire level cleaning. There is a system that captures up to 230,400 data points/second to optimize coverage in large apartments. When it comes to boundary marking, the S9 has digital barriers known as Keep Out Zones. You can also send the robot to clean specific rooms instead of the entire house.

Roomba J7 Navigation and Mapping

Roomba J7 Navigation
The Roomba J7 also comes with iAdapt 3.0 Navigation with Imprint Smart Mapping. The VSLAM-based navigation system boasts updated software, an onboard front-facing camera, and drop/obstacle detection sensors. One difference between the S9 vs. J7 is the PrecisionVision Navigation. This feature enables the Roomba to identify objects and obstacles to be avoided, for example, power cords and cable, socks, shoes, headphones, and even dog poop.

As for mapping, this is also a smart robot vacuum that creates hyper-accurate maps of your home. The J7 cleans in a systematic pattern guaranteeing entire level cleaning. When it comes to boundary marking, homeowners can create limits right from the app courtesy of the Keep Out Zones feature. You can also send the robot to clean specific rooms instead of it vacuuming the entire house unnecessarily.

6. Smart Features and Convenience

The Roomba S9 and J7 are both smart robot vacuums with 2.4GHz WiFi compatibility. But then, the J7 has the upper hand here. Find out how the duo compares.

Roomba J7 Smart Features and Convenience

Roomba J7 Smart Features

The Roomba S9 has all the smart features that the S9 comes with, plus several extras. You can control your robot using the iRobot Home app or voice assistants, including Alexa and Google Assistant. But there is a difference between the S9 vs. J7 in terms of smart features. This robot comes with iRobot Home Genius 3.0.

Important

This new version comes with four new features; Cleaning Time Estimates, Clean While I’m Away, Quiet Drive, and Smart Map Coaching and Room Name Suggestions.

Is Roomba J7 a Good Robot Vacuum Brand

Roomba J7 a Good Robot Vacuum Brand
Yes. The Roomba J7 is an equally good robot vacuum that can satisfactorily vacuum all types of bare floors and pet messes. You can also rely on it to vacuum low pile carpets, and it’s also a self-emptying robot vacuum.

Importantly, this robot vacuum does a great job in busy and high traffic homes courtesy of the PrecisionVision navigation that identifies objects and obstacles that should be avoided, for example, dog poop.

Roomba J7 vs. S9: Our Verdict

That’s the end of this Roomba J7 vs. S9 face-to-face comparison review. As witnessed, both models have most of the bells and whistles from iRobot. Now, the elephant in the room is, which is the best choice? As far as cleaning performance is concerned, the Roomba S9 still reigns courtesy of high suction power and longer runtime.

However, if you don’t have a high pile carpet and you are keen on a Roomba with the smartest navigation system and intelligent convenience features, the J7 will be the best.

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