Home Robot Vacuum Cleaners Irobot Roomba 960 Vs. Irobot Roomba 621

Irobot Roomba 960 Vs. Irobot Roomba 621 Review

8 minute read   Last updated on Mar 5, 2024
iRobot Roomba 960

iRobot Roomba 960

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Key features of the iRobot Roomba 960

Overall Score 6.7

  • Can Clean All Floor Types
  • Battery Power of 2600 mAh
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 960 iRobot Roomba 621
COMMONLY ASKED FOR FEATURES can clean all floor types
has mapping and navigation
has an obstacle sensor
number of cleaning modes 3only 3only
warranty period 1year 1year
DESIGN FEATURES has included washable filters
dustbin capacity 0.6L 0.5L
has twin side brushes
automatically adjusts its height
indicates when full
weight 4kg 4.3kg
width 350mm 340mm
height 91mm 92mm
CLEANING PERFORMANCE AND POWER FEATURES battery power 2,600mAh 4,500mAh
operating time 1.25h 1.5h
charge time 2h 3h
operating power consumption 30W 33W
has overheating indicator
has auto-off
can mop floor
has dirt sensor
OTHER FEATURES 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 960 can clean all floor types, this feature is essential, as different rooms inside your home may have various types of flooring i.e. carpets. When a robot vacuum cleaner is stated able to clean all types of floors, this means that the robot vacuum is capable to effectively clean most flooring materials without much significant issues.

iRobot Roomba 621 aslo cleans all floor types, meaning it is built to be adaptable, providing effective cleaning results on either hard floors or carpets found in most homes.

Has Mapping And Navigation

The robot vacuum's ability to create a digital map of its cleaning space is one of the commonly asked-for features. The map it creates allows the robot to "understand" the layout of the desired space. Mapping and navigation can be used for several purposes, e.g. the iRobot Roomba 621 having the mapping feature can provide efficient cleaning in the mapped-out areas keeping out of those that are not.

Has An Obstacle Sensor

iRobot Roomba 960 has an obstacle sensor, such a sensor serves the purpose of detecting and identifying obstacles in the robot's route, 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 thus preventing damage to both the robot and its obstacles.

Number Of Cleaning Modes

iRobot Roomba 960 has 3 cleaning modes, the number of cleaning modes offered by robot vacuum cleaners varies widely depending on the design of the robot vacuum.

The iRobot Roomba 621, having only 3 has the same number of cleaning modes as the iRobot Roomba 960 Robot vacuum manufacturers may offer different cleaning modes to provide users with flexibility and adaptability to different cleaning scenarios.

Warranty Period

iRobot Roomba 960 has a period of 1 year, this typically range from 1 - 2 years, however some higher-end models may give longer warranty periods.

The iRobot Roomba 621, at 1 year has the same warranty period as that of iRobot Roomba 960. When considering a robot vacuum cleaner, it's important to read and understand the warranty terms and conditions, as well as any limitations or exclusions that may apply.

iRobot Roomba 960
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Design Features

Has Included Washable Filters

The 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 washed to maintain the vacuum's performance.

Dustbin Capacity

The iRobot Roomba 960's dustbin capacity is at 0.6L, dustbin capacity indicates how much dust, debris, and pet hair the robot vacuum holds before it can be emptied.

The iRobot Roomba 621, at 0.5L carries less dirt than the iRobot Roomba 960 with a difference of only 0.1L The dustbin capacity can vary widely among robot vacuum models, and the capcity you choose should depend on your cleaning needs and the size of the area you want to clean.

Has Twin Side Brushes

The iRobot Roomba 960 has twin side brushes, twin side brushes can be useful for certain cleaning tasks, since they help the robot vacuum sweep dirt and debris from corners and along edges.

Automatically Adjusts Its Height

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

Indicates When Full

Many robot vacuum cleaners are equipped with sensors and indicators to notify users when the dirt collection container is full and needs to be emptied. iRobot Roomba 960 supports this feature, which prevents the robot vacuum from getting clogged thus performance will be maintained as soon as the bin is emptied.

Weight

The iRobot Roomba 960 weighs 4kg, robot vacuums are generally designed to be lightweight and compact to easily get around and portability.

The iRobot Roomba 621, at 4.3kg weighs more than the iRobot Roomba 960 with a difference of 0.3kg. It's important to take in consideration the weight of the robot vacuum when getting a model, especially if you plan to carry it up and down stairs

Width

iRobot Roomba 960 has a width of 350mm, often referred to as its cleaning path width, is the width of the area that it can effectively clean in one go. The width of a robot vacuum is key as it can affect its efficiency and the duration it takes to clean a space

iRobot Roomba 621, at 340mm measures less in width than the iRobot Roomba 960 by 10mm. A wider cleaning path can cover more ground in a single pass, shortening the time it takes to clean a room.

Height

iRobot Roomba 960's height measures 91mm, here you are considering the measurement from the bottom to its highest point. Height is an important consideration, especially if you have furniture with limited clearance in your home.

The iRobot Roomba 621, at 92mm measures more in height than the iRobot Roomba 960 with a difference of 1mm. When selecting a robot vacuum, make sure that the robot vacuum can go 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. Battery capacity is typically measured in milliampere-hours (mAh), iRobot Roomba 960's battery power is 2,600mAh

iRobot Roomba 621, at mAh4,500 has more battery power than the iRobot Roomba 960 with a difference of A bigger capacity implies longer battery life which can be beneficial if you have a large space or if you prefer the robot vacuum to complete cleaning cycles with fewer interruptions to recharge.

Operating Time

The operating time of the iRobot Roomba 960 refers to the amount of time the vacuum can clean continuously on a single charge before it needs to be recharged. iRobot Roomba 960's operating time is 1.25h

The iRobot Roomba 621, at 1.5h lasts more than the iRobot Roomba 960 with a difference of 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 960 has a charge time of 2h, 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.

iRobot Roomba 621, at 3h charges for longer than the iRobot Roomba 960 with a difference of 1h. Charge time is an important factor to consider when choosing a robot vacuum, since it determines how long you'll need to wait before the vacuum is ready for its next cleaning cycle.

Operating Power Consumption

This is the amount of electrical power the vacuum uses while it's actively cleaning your home. iRobot Roomba 960 has a power consumption of 30W, power is often measured in watts (W) and changes among different robot vacuum models based on several consuption factors.

The iRobot Roomba 621, at 33W consumes more power than the iRobot Roomba 960 by 3W. Lower power consumption can be more energy-efficient and cost-effective over time, but it may also affect cleaning performance, especially on carpets.

Has Overheating Indicator

An overheating indicator in a robot vacuum serves many important purposes, making it a very important safety feature. It helps protect the iRobot Roomba 621 from damage by detecting when critical components, such as the motor or battery, are operating at temperatures that could cause harm.

Has Auto-Off

Auto-off is a feature designed to automatically turn off the vacuum after it has completed an operation or when specific conditions occur. iRobot Roomba 960 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 operations.

Can Mop Floor

True, most modern robot vacuum cleaners can mop floors in addition to vacuuming. Such robot vacuums are often referred to as robot vacuum and mop models and iRobot Roomba 960 is one of those robot vacuums

Has Dirt Sensor

iRobot Roomba 960 has a dirt sensor, these are designed to detect the availability of dirt, dust, or debris in the room being cleaned and can be used to adjust the vacuum's cleaning behavior during operation.

You may want to consider buying either the iRobot Roomba 621 or iRobot Roomba 960 If you prefer the ability to automatically adjust the cleaning modes of the robot vacuum based on the level of dirt and debris in your room.

iRobot Roomba 960
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Other Features

Has Problem Area Cleaning

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

Has Carpet Detection

iRobot Roomba 621 has carpet detection, which allows the vacuum to identify and adjust to different floor surfaces, specifically recognizing when it moves from hard floors like tile to carpeted areas.

Support A Mobile Application

iRobot Roomba 960 supports a smartphone app, that allows you to 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 chance of the robot vacuum getting trapped while cleaning. Robot vacuums such as the iRobot Roomba 960 are equipped with various sensors and technologies to navigate around obstacles and avoid getting trapped, but the effectiveness of this feature varies among different models.

Both the iRobot Roomba 621 and iRobot Roomba 960 have the "anti-stuck" feature, but clearing clutter, ensuring proper cable management, and creating clear paths for the vacuums helps to further eliminate the chances of becoming stuck while cleaning.

Supports Virtual Barriers

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

Has Route Mapping

iRobot Roomba 960 has a route mapping feature which enables it to generate a map of your space and schedule efficient cleaning routes. This mapping capability enhances the vacuum's ability to work effectively and systematically.

Route mapping is a valuable feature as it enables robot vacuums such as the iRobot Roomba 621 to adapt to the layout of your home to clean more efficiently and reduce the risk of missing certain spots.

Has Voice Prompts

Voice prompts are audible messages that the vacuum emits to provide you alerts on the different states of the vacuum. iRobot Roomba 960 has 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 960 support this feature, considered a convenient feature because it makes sure that the robot vacuum keeps its charge and readiness for cleaning with little or no manual intervention.

Has Anti-Fall Sensor

Modern robot vacuum cleaners such as iRobot Roomba 960 come having an "cliff detection" feature. This feature is designed to save the robot vacuum from falling off stairs, ledges, or other elevated surfaces, hence its safety while cleaning.

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

Can Be Scheduled

iRobot Roomba 960 has this convenient feature, which enables you to set certain days or times of day for the robot vacuum to automatically start working.

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

Supports Wi-Fi

iRobot Roomba 960 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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