Home Robot Vacuum Cleaners Irobot Roomba J7 Plus Vs. Irobot Roomba 621

Irobot Roomba J7 Plus Vs. Irobot Roomba 621 Review

8 minute read   Last updated on Mar 5, 2024
iRobot Roomba j7 Plus

iRobot Roomba j7 Plus

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Key features of the iRobot Roomba j7 Plus

Overall Score 6.7

  • Can Clean All Floor Types
  • Battery Power of 2210 mAh
  • Is Self-Emptying
VS
iRobot Roomba 621

iRobot Roomba 621

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Key features of the iRobot Roomba 621

Overall Score 6.4

  • Can Clean All Floor Types
  • Has Included Washable Filters
  • Battery Power of 4500 mAh

A summary by feature comparison

Category Features iRobot Roomba j7 Plus iRobot Roomba 621
COMMONLY ASKED FOR FEATURES can clean all floor types
has mapping and navigation
has an obstacle sensor
works with alexa
compatible with google assistant
number of cleaning modes 3only
warranty period 1year 1year
DESIGN FEATURES has included washable filters
dustbin capacity 0.4L 0.5L
automatically adjusts its height
indicates when full
weight 3.3kg 4.3kg
width 330mm 340mm
height 92mm 92mm
CLEANING PERFORMANCE AND POWER FEATURES battery power 2,210mAh 4,500mAh
operating time 1.25h 1.5h
charge time 5h 3h
operating power consumption 33W
has overheating indicator
has auto-off
has dirt sensor
OTHER FEATURES is self-emptying
has problem area cleaning
has carpet detection
support a mobile application
doesn't get stuck
supports virtual barriers
has route mapping
has voice prompts
supports auto docking
has anti-fall sensor
can be scheduled
supports wi-fi
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Let's look at each feature category in detail

Commonly Asked For Features

Can Clean All Floor Types

iRobot Roomba j7 Plus cleans all floor types, this is essential, since different rooms inside your home may have different types of flooring i.e. carpets. If a robot vacuum is said to be as being able to clean all floor types, it implies that the vacuum is designed and equipped to effectively clean a wide range of flooring materials without much limitations.

iRobot Roomba 621 can also clean all floor types, meaning it is designed to be adaptable, giving effective cleaning performance on either carpets or hard floors found in most homes.

Has Mapping And Navigation

The robot vacuum's ability to create a map of its cleaning space is one of the commonly asked-for features. This map allows the robot to "understand" the layout of the space. Mapping and navigation can be used for different situations, for example the iRobot Roomba j7 Plus having the mapping feature can dedicate efficient cleaning in the mapped-out areas keeping out of those that are not.

The iRobot Roomba 621 also has the mapping and navigation feature, navigation involves how the robot vacuum moves around the cleaning area. Mapping and navigation often go hand in hand to help the vacuum navigate to the mapped-out spaces to be cleaned ignoring those that aren't.

Has An Obstacle Sensor

iRobot Roomba j7 Plus has an obstacle sensor, such a sensor serves the purpose of detecting and identifying obstacles in the robot's path, allowing it to navigate around them thus avoiding collisions.

Also, the iRobot Roomba 621 has an obstacle sensor, obstacle sensors work together to provide the robot vacuum with a better understanding of its surroundings, making it possible to navigate around furniture, walls, and other objects when cleaning a room and preventing damage to both the robot and its obstacles.

Works With Alexa

Most modern robot vacuum cleaners such as the iRobot Roomba j7 Plus are built to work with Amazon Alexa, which means that they can be integrated with the Amazon Echo ecosystem and programmed using voice commands.

Compatible With Google Assistant

iRobot Roomba j7 Plus is compatible with Google Assistant, enabling you to control it using voice commands via Google Home devices or the Google Assistant app found on smartphones and tablets.

Number Of Cleaning Modes

The iRobot Roomba 621 has 3 cleaning modes, the number of cleaning modes offered by robot vacuum cleaners can vary widely depending on the design of the robot vacuum.

Warranty Period

iRobot Roomba j7 Plus has a period of 1 year, this typically range from 1 year to 2 years, but some higher-end brands may offer longer warranty periods.

iRobot Roomba 621, at 1 year has the same warranty period as that of iRobot Roomba j7 Plus. When considering a robot vacuum cleaner, it's essential to read and understand the warranty terms and conditions, as well as any limitations or exclusions that may apply.

iRobot Roomba j7 Plus
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Design Features

Has Included Washable Filters

iRobot Roomba 621 has washable filters, these are designed to capture dust, dirt, and fine particles during the cleaning process and can be easily removed and cleaned to maintain the vacuum's performance.

Dustbin Capacity

iRobot Roomba j7 Plus's dustbin capacity is at 0.4L, dustbin capacity determines how much dust, debris, and pet hair the robot vacuum holds before it can be emptied.

The iRobot Roomba 621, at 0.5L has more capacity than the iRobot Roomba j7 Plus with a difference of 0.1L The dustbin capacity varies widely among robot vacuum models, and the size you choose should depend on your cleaning needs and the size of the area you want to clean.

Automatically Adjusts Its Height

Different floor types require a robot vacuum to be at a given ground clearance so as to optimize performance. iRobot Roomba 621 adjusts its height to match this demand, for example, it may raise itself slightly when transitioning to a carpet to allow for effective suction, and then lower itself on hard floors to ensure the brushes make good contact.

Indicates When Full

Many robot vacuum cleaners are equipped with sensors and indicators to notify users when the dustbin is full and needs to be emptied. iRobot Roomba j7 Plus supports this feature, which prevents the robot vacuum from getting clogged which means performance will be maintained as soon as the bin is emptied.

Weight

iRobot Roomba j7 Plus weighs 3.3kg, robot vacuums are generally designed to be lightweight and compact to easily get around and carrying around.

The iRobot Roomba 621, at 4.3kg weighs more than the iRobot Roomba j7 Plus by 1kg. It's advisable to take in consideration the weight of the robot vacuum when selecting a model, especially if you plan to carry it up and down stairs

Width

iRobot Roomba j7 Plus has a width of 330mm, aslo known as its cleaning path width, is the width of the area that the robot vacuum can effectively clean in one go. The width of a robot vacuum is important as it can affect its efficiency and the duration it takes to clean a space

The iRobot Roomba 621, at 340mm measures more in width than the iRobot Roomba j7 Plus by 10mm. A wider cleaning path can cover more ground in a single pass, reducing the time it takes to clean a room.

Height

iRobot Roomba j7 Plus's height measures 92mm, here you are looking at the measure from the bottom to its highest point. Height is a key consideration, especially if you have furniture with low clearance in your home.

The iRobot Roomba 621, at 92mm has the same height as that of iRobot Roomba j7 Plus. When selecting a robot vacuum, make sure that the robot vacuum can fit under the furniture and navigate effectively in your living space without getting stuck or causing damage.

Cleaning Performance And Power Features

Battery Power

The battery power of a robot vacuum cleaner is a crucial factor that determines how long the vacuum can operate on a single charge. It is measured in milliampere-hours (mAh), iRobot Roomba j7 Plus's battery power is 2,210mAh

The iRobot Roomba 621, at mAh4,500 has more battery power than the iRobot Roomba j7 Plus by A bigger capacity usually means longer battery life which can be beneficial if you have a large home or if you prefer the robot vacuum to complete cleaning cycles with less interruptions to recharge.

Operating Time

The operating time of a robot vacuum cleaner refers to the time the vacuum can clean continuously on a single charge before it needs to return to its charging dock for recharging. iRobot Roomba j7 Plus's operating time is 1.25h

The iRobot Roomba 621, at 1.5h lasts more than the iRobot Roomba j7 Plus by 0.25h Always plan cleaning cycles around the vacuum's operating time to maximize efficiency and prevent "incomplete work" between charge intervals.

Charge Time

iRobot Roomba j7 Plus has a charge time of 5h, the charge time of a robot vacuum cleaner refers to the amount of time it takes for the vacuum's battery to recharge fully after it has been depleted during a cleaning cycle.

The iRobot Roomba 621, at 3h spends lesser time charging than the iRobot Roomba j7 Plus with a difference of only 2h. Charge time is an important factor to consider when choosing a robot vacuum, as it determines how long you'll need to wait before the vacuum is ready for its next cleaning cycle.

Operating Power Consumption

The operating power consumption of a robot vacuum cleaner refers to the amount of electrical power the vacuum uses while it's actively cleaning your home. iRobot Roomba 621 has a power consumption of 33W, power is often measured in watts (W) and can vary among different robot vacuum models based on several consuption factors.

Has Overheating Indicator

An overheating indicator in a robot vacuum serves several important purposes, making it a valuable safety feature. It helps protect the iRobot Roomba 621 from damage by detecting when key components, such as the motor or battery, are operating at temperatures that are dangerous.

Has Auto-Off

This feature is designed to automatically turn off the vacuum after it has completed an operation or when specific conditions occur. iRobot Roomba j7 Plus has an auto-off feature, which is useful for energy efficiency and battery preservation.

Also, iRobot Roomba 621 supports this feature, overall, the auto-off feature in a robot vacuum is a key addition that in a way promotes energy efficiency, prolongs the vacuum's lifespan, enhances safety, and adds convenience to the cleaning process.

Has Dirt Sensor

iRobot Roomba 621 has a dirt sensor, these are designed to detect the concentration of dirt, dust, or debris in the area being cleaned and based on their readings adjust the vacuum's cleaning behavior during operation.

iRobot Roomba j7 Plus
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Other Features

Is Self-Emptying

Self-emptying robot vacuum cleaners like the iRobot Roomba j7 Plus, are modern robot vacuum models that have a convenient feature to empty their dustbins automatically.

Has Problem Area Cleaning

This feature allows you to command a robot vacuum to focus on cleaning a particular area in your space, iRobot Roomba 621 supports this, which can be really useful for dealing with localized messes or busy areas.

Has Carpet Detection

iRobot Roomba j7 Plus has carpet detection, which allows the vacuum to detect and adapt to all kinds of floor surfaces, to be specific recognizing when it moves from hard floors like hardwood to carpeted areas.

This feature is designed to optimize cleaning performance and also make sure that it adjusts its settings appropriately when cleaning carpets. Robot vacuums with a carpet detection feature like the iRobot Roomba j7 Plus and iRobot Roomba 621 utilize sensors for surface detection, enabling them to make required adjustments for better cleaning.

Support A Mobile Application

iRobot Roomba j7 Plus supports a smartphone app, through which you can control and monitor the vacuum remotely through your smartphone or tablet.

Doesn't Get Stuck

This feature in robot vacuum cleaners is designed to reduce the likelihood of the robot vacuum getting stuck during cleaning. Robot vacuums such as the iRobot Roomba j7 Plus are equipped with various sensors and technologies to move around obstacles and avoid getting stuck, however the effectiveness of this feature can vary among different models.

Both the iRobot Roomba 621 and iRobot Roomba j7 Plus have the "anti-stuck" feature, however clearing clutter, ensuring proper cable management, and creating clear paths for the vacuums helps to further eliminate the chances of getting stuck during cleaning.

Supports Virtual Barriers

These virtual barriers are typically set up and managed via the robot vacuum's mobile app, similar to no-go zones, these barriers are designed to help you control and restrict where the robot vacuum can and cannot go while cleaning.

Has Route Mapping

iRobot Roomba j7 Plus has a route mapping feature which enables it to generate a map of your home and plan efficient cleaning routes. This mapping capability improves the vacuum's ability to clean effectively and systematically.

Route mapping is an important feature as it enables robot vacuums such as the iRobot Roomba 621 to adapt to the layout of your home to work more efficiently and reduce the possibility of missing certain spots.

Has Voice Prompts

Voice prompts are notifications that the vacuum states to provide you information on the different states of the vacuum. iRobot Roomba j7 Plus supports this feature

Supports Auto Docking

Auto-docking is a feature in robot vacuum cleaners that indicates the vacuum's ability to autonomously return to its docking station when predetermined conditions are met such as done with cleaning, battery running low, or any malfunction.

Both iRobot Roomba 621 and iRobot Roomba j7 Plus support this feature, considered a convenient feature because it ensures that the robot vacuum maintains its charge and readiness for cleaning without requiring manual intervention.

Has Anti-Fall Sensor

Modern robot vacuum cleaners such as iRobot Roomba j7 Plus come having an "anti-fall" feature. This feature is designed to save the robot vacuum from falling off stairs, ledges, or other elevated surfaces, hence its safety during operation.

This safety feature that is also available on the iRobot Roomba 621 is key in mitigating accidents and keeping the robot vacuum from damage. It gives you peace of mind knowing that the vacuum will not fall off a ledge during its cleaning cycle.

Can Be Scheduled

iRobot Roomba j7 Plus has this convenient feature, which enables you to set certain days or times of day for the robot vacuum to start cleaning your space.

This feature in robot vacuums is specifically useful in maintaining a consistently clean space with little or no manual intervention. iRobot Roomba 621 too can be scheduled.

Supports Wi-Fi

iRobot Roomba j7 Plus supports Wi-Fi, Wi-Fi-enabled robot vacuums offer several advantages and features, such as remote control, mobile app integration, voice assistant compatibility, and remote monitoring.

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