iRobot Roomba 621 cleans all floor types, this comes in handy, as different rooms within your home may have different types of flooring i.e. carpets. When a robot vacuum cleaner is advertised as being able to clean all floor types, this means that the vacuum is designed and equipped to clean flooring materials without much significant issues.
The vacuum's ability to create a 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, e.g.
the iRobot Roomba 621 having the mapping feature can dedicate efficient cleaning in the mapped-out areas keeping out of those that are not. iRobot Roomba 981 also has the mapping and navigation feature, navigation defines 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 leaving out those that aren't.
iRobot Roomba 621 has an obstacle sensor, such a sensor serves the purpose of detecting and identifying obstacles in the robot's way, allowing it to navigate around them and avoid collisions. Also, the iRobot Roomba 981 has an obstacle sensor, obstacle sensors work together to provide the robot vacuum with a comprehensive understanding of its environment, enabling it to navigate around furniture, walls, and other objects when cleaning a room thus preventing damage to both the robot and its obstacles. The iRobot Roomba 621 has 3 cleaning modes, the cleaning modes supported by robot vacuums can vary widely depending on the design of the robot vacuum.
iRobot Roomba 981, having only 4
has more modes than the iRobot Roomba 621 with a difference of 1
Robot vacuum manufacturers offer different cleaning modes to provide users with flexibility and adaptability to different cleaning scenarios. iRobot Roomba 621 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. The iRobot Roomba 981, at 1 year
has the same warranty period as that of iRobot Roomba 621.
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 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. The iRobot Roomba 621's dustbin capacity is at 0.5L, dustbin capacity indicates how much dust, debris, and pet hair the robot vacuum can hold before it requires to be emptied.
iRobot Roomba 981, at 0.5L
has the same dustbin capacity as the iRobot Roomba 621
The dustbin capacity varies widely among robot vacuum models, and the capcity you choose should be based on your cleaning needs and the size of the area you want to clean. Different floor types require a robot vacuum to be at a given ground clearance so as to optimize performance. iRobot Roomba 621 can adjust 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 make sure the brushes make good contact.
The iRobot Roomba 621 weighs 4.3kg, robot vacuums are generally designed to be lightweight and compact for easy maneuverability and portability. iRobot Roomba 981, at 4kg
is lighter than the iRobot Roomba 621 with a difference of 0.3kg. It's advisable to take in consideration the weight of the vacuum when choosing a model, and that's if you plan to carry it up and down stairs
iRobot Roomba 621 has a width of 340mm, aslo known as its cleaning path width, refers to the width of the area that the robot vacuum can properly clean in a single pass.
The width of a robot vacuum is key as it can affect its efficiency and the duration it takes to clean a space
The iRobot Roomba 981, at 351mm
measures more in width than the iRobot Roomba 621 by 11mm. A wider cleaning path can cover more ground in a single pass, reducing the time it takes to clean a room. iRobot Roomba 621's height measures 92mm, here you are looking at the measure from the bottom of the robot vacuum to its highest point.
Height is an important consideration, especially if you have obstacles with limited clearance in your home. The iRobot Roomba 981, at 92mm
has the same height as that of iRobot Roomba 621. When choosing 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.
The battery power of a robot vacuum cleaner is important as it determines how long the vacuum can operate on a single charge. It is measured in milliampere-hours (mAh), iRobot Roomba 621's battery power is 4,500mAh
iRobot Roomba 981, at mAh3,000
has less battery power than the iRobot Roomba 621 with a difference of only
A bigger capacity implies longer battery life which can be beneficial if you have a large room or if you would like the robot vacuum to complete operations without frequent interruptions to recharge. The operating time of the iRobot Roomba 621 refers to the time the vacuum can clean continuously on a single battery charge before it needs to return to its charging dock for recharging.
iRobot Roomba 621's operating time is 1.5h
The iRobot Roomba 981, at 2h
lasts more than the iRobot Roomba 621 with a difference of 0.5h
Always plan cleaning cycles around the vacuum's operating time to maximize efficiency and prevent "incomplete work" between charge intervals. iRobot Roomba 621 has a charge time of 3h, 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 981, at 3h
has the same charge time as the iRobot Roomba 621.
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 begins its next cleaning cycle. 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 typically measured in watts (W) and can vary among different robot vacuum models based on several consuption factors.
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 key components, such as the motor or battery, are operating at temperatures that could cause harm. This feature is designed to automatically turn off the vacuum after it has completed an operation or when specific conditions occur.
iRobot Roomba 621 has an auto-off feature, which is useful for energy efficiency and battery preservation. Also, iRobot Roomba 981 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. iRobot Roomba 621 has a dirt sensor, dirt sensors are designed to detect the concentration of dirt, dust, or debris in the area being cleaned and can be used to adjust the vacuum's cleaning behavior during cleaning cycle.
Problem area cleaning allows you to program a robot vacuum to focus on cleaning a particular area in your home, the iRobot Roomba 621 supports this, which can be particularly useful for dealing with localized messes or busy areas. iRobot Roomba 621 has carpet detection, which allows the vacuum to detect and adapt to all kinds of floor surfaces, specifically recognizing when it moves from hard floors like tile to carpeted areas. This feature in robot vacuum cleaners is intended to reduce the chance of the robot vacuum becoming trapped during cleaning.
Robot vacuums such as the iRobot Roomba 621 are equipped with various sensors and technologies to navigate around obstacles and avoid getting stuck, but the effectiveness of this feature can vary among different models. Both the iRobot Roomba 981 and iRobot Roomba 621 have the "anti-stuck" feature, but clearing clutter, ensuring proper cable management, and creating clear paths for the vacuums can help further eliminate the chances of getting stuck during cleaning. iRobot Roomba 621 has a route mapping feature which enables it to create a map of your space and schedule 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 981 to adapt to the layout of your space to work more efficiently and reduce the chance of missing certain spots. 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 getting work done, battery running low, or any malfunction.
Both iRobot Roomba 981 and iRobot Roomba 621 support this feature, considered a convenient feature because it makes sure that the robot vacuum maintains its charge and readiness for cleaning without requiring manual intervention. Modern robot vacuum cleaners such as iRobot Roomba 621 come having 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 981 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 down a flight of stairs during its cleaning cycle. iRobot Roomba 621 has this convenient feature, which allows you to set specific days or times of day for the robot vacuum to automatically start working.
The scheduling feature in robot vacuums is particularly useful in maintaining a consistently clean space with little or no manual intervention. iRobot Roomba 981 too can be scheduled.
