Home Robot Vacuum Cleaners Irobot Roomba I7 Vs. Irobot Roomba 621

Irobot Roomba I7 Vs. Irobot Roomba 621 Review

8 minute read   Last updated on Mar 5, 2024
iRobot Roomba i7

iRobot Roomba i7

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Key features of the iRobot Roomba i7

Overall Score 6.9

  • Battery Power of 1800 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 i7 iRobot Roomba 621
COMMONLY ASKED FOR FEATURES can clean all floor types
has mapping and navigation
has an obstacle sensor
supports no-go zones
works with alexa
compatible with google assistant
number of cleaning modes 3only 3only
warranty period 1year 1year
DESIGN FEATURES has included washable filters
dustbin capacity 0.5L 0.5L
automatically adjusts its height
indicates when full
weight 3kg 4.3kg
width 338mm 340mm
height 92mm 92mm
CLEANING PERFORMANCE AND POWER FEATURES battery power 1,800mAh 4,500mAh
operating time 1.25h 1.5h
charge time 2h 3h
operating power consumption 33W
has overheating indicator
has auto-off
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 621 can clean all floor types, this comes in handy, as different rooms inside your home may have various types of flooring i.e. carpets. If a robot vacuum cleaner is stated able to clean all types of floors, it implies that the robot vacuum is designed and equipped to clean most flooring materials without any significant issues.

Has Mapping And Navigation

A 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 keep a record of the layout of the space. This can be used for several purposes, for example the iRobot Roomba i7 having the mapping feature can dedicate efficient cleaning in the mapped-out areas without accessing those that are not.

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 i7 has an obstacle sensor, such a sensor serves the purpose of detecting and identifying obstacles in the robot's route, this allwos it to navigate around them and avoid collisions.

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

Supports No-Go Zones

No-go zones is a feature found on many robot vacuum cleaners and iRobot Roomba i7 is one of them. These zones are essentially digital boundaries or restricted areas that you can set up preventing the robot from entering specific areas or rooms during its cleaning cycle.

Works With Alexa

Many modern robot vacuum cleaners such as the iRobot Roomba i7 are designed to work with Amazon Alexa, which implies that they can be integrated with the Amazon Echo ecosystem and controlled using voice commands.

Compatible With Google Assistant

The iRobot Roomba i7 is compatible with Google Assistant, enabling you to control it using voice commands through Google Home devices or the Google Assistant app installed on smartphones and tablets.

Number Of Cleaning Modes

iRobot Roomba i7 has 3 cleaning modes, the number of cleaning modes offered by robot vacuums can vary 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 i7 Robot vacuum manufacturers may offer different cleaning modes to provide users with flexibility and adaptability to different cleaning floors.

Warranty Period

The iRobot Roomba i7 has a period of 1 year, warranty periods for robot vacuums typically range from 1 year to 2 years, however some higher-end models may offer longer warranties.

iRobot Roomba 621, at 1 year has the same warranty period as that of iRobot Roomba i7. 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 i7
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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

The iRobot Roomba i7's dustbin capacity is at 0.5L, dustbin capacity determines how much dust, dirt, and pet hair the robot vacuum can hold before it requires to be emptied.

iRobot Roomba 621, at 0.5L has the same dustbin capacity as the iRobot Roomba i7 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.

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 moving 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

Most robot vacuum cleaners are equipped with sensors and indicators to notify users when the dustbin is full and needs to be emptied. iRobot Roomba i7 supports this feature, which prevents the robot vacuum from getting clogged thus performance will be maintained as soon as the bin is emptied.

Weight

iRobot Roomba i7 weighs 3kg, robot vacuums are commonly designed to be lightweight and compact for easy maneuverability and carrying around.

iRobot Roomba 621, at 4.3kg weighs more than the iRobot Roomba i7 by 1.3kg. It's advisable to consider the weight of the robot vacuum when selecting a model, especially if you plan to carry it up and down stairs

Width

iRobot Roomba i7 has a width of 338mm, often referred to as its cleaning path width, is the width of the area that it can properly clean in a single pass. 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 i7 by 2mm. A wider cleaning path can cover more ground in a single pass, reducing the time it takes to clean a room.

Height

iRobot Roomba i7's height measures 92mm, here you are considering the measure from the bottom to its highest point. Height is a key consideration, especially if you have obstacles with limited clearance in your home.

The iRobot Roomba 621, at 92mm has the same height as that of iRobot Roomba i7. 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 typically measured in milliampere-hours (mAh), iRobot Roomba i7's battery power is 1,800mAh

The iRobot Roomba 621, at mAh4,500 has more battery power than the iRobot Roomba i7 with a difference of A bigger capacity implies longer battery life which can be beneficial if you have a large space or if you would like the robot vacuum to complete cleaning cycles without frequent interruptions to recharge.

Operating Time

The operating time of the iRobot Roomba i7 refers to the amount of time the vacuum can clean continuously on a single battery charge before it needs to be recharged. iRobot Roomba i7's operating time is 1.25h

The iRobot Roomba 621, at 1.5h lasts more than the iRobot Roomba i7 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 i7 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 i7 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 621 has a power consumption of 33W, power is often measured in watts (W) and changes among different robot vacuum models based on several consuption factors.

Has Overheating Indicator

An overheating indicator in a robot vacuum serves several key purposes, making it a valuable safety feature. It helps protect the iRobot Roomba 621 from damage by sensing when key 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 a cleaning cycle or when specific conditions occur. iRobot Roomba i7 has an auto-off feature, which is useful for energy efficiency and battery preservation.

Also, iRobot Roomba 621 has 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.

Has Dirt Sensor

iRobot Roomba i7 has a dirt sensor, dirt sensors are designed to detect the availability of dirt, dust, or debris in the space being cleaned and based on their readings adjust the vacuum's cleaning behavior during operation.

You may want to consider buying either the iRobot Roomba 621 or iRobot Roomba i7 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 space.

iRobot Roomba i7
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Other Features

Has Problem Area Cleaning

This feature enables you to program a robot vacuum to focus on cleaning a specific area in your space, iRobot Roomba i7 supports this, which can be particularly useful for dealing with particular area messes or busy areas.

The iRobot Roomba 621 also supports problem area cleaning, the problem area cleaning feature is a better way to address specific area messes or high-traffic areas without running a full cleaning cycle for your entire home.

Has Carpet Detection

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

Support A Mobile Application

iRobot Roomba i7 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 chance of the robot vacuum becoming stuck during cleaning. Robot vacuums such as the iRobot Roomba i7 are equipped with various sensors and technologies to navigate around obstacles and avoid getting stuck, but the effectiveness of this feature varies among different models.

Both the iRobot Roomba 621 and iRobot Roomba i7 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 becoming stuck during cleaning.

Supports Virtual Barriers

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

Has Route Mapping

iRobot Roomba i7 has a route mapping feature that enables it to generate a map of your space and plan efficient cleaning routes. This mapping capability enhances 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 clean more efficiently and reduce the chance of missing certain spots.

Has Voice Prompts

Voice prompts are audible messages that the vacuum states to give you information on the different states of the vacuum. iRobot Roomba i7 has this feature

Supports Auto Docking

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

Both iRobot Roomba 621 and iRobot Roomba i7 support this feature, considered a convenient feature because it makes sure that the robot vacuum maintains its charge and readiness for cleaning with little or no manual intervention.

Has Anti-Fall Sensor

Most robot vacuum cleaners such as iRobot Roomba i7 come equipped with an "cliff detection" feature. This feature is intended to prevent 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 key in preventing accidents and protecting the robot vacuum from damage. It gives you peace of mind by ensuring that the vacuum will not fall down a flight of stairs during its cleaning cycle.

Can Be Scheduled

iRobot Roomba i7 has this convenient feature, which allows you to set specific days or times of day for the robot vacuum to automatically start working.

This feature in robot vacuums is particularly useful in keeping a consistently clean home with little or no manual intervention. iRobot Roomba 621 too allows scheduling.

Supports Wi-Fi

iRobot Roomba i7 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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