iRobot Roomba 891 Robot Vacuum Review

Robot vacuums haven’t been around for very long. They’ve only been around for 2.5 decades, give or take. Relatively speaking, they’re quite new, as far as vacuum cleaners go.

Robot vacuums are taking over the market. More and more people are choosing to buy a good robot vacuum, rather than investing in a more traditional vacuum, such as an upright vacuum or a canister vacuum. These are vacuum cleaners that have been around for many decades, and are considered the best of the best. But, people are moving away from the traditional vacuums, and towards newer and more unconventional vacuum cleaners, such as robot vacuums.

Robot vacuums do something that no other vacuum cleaner does: they automate the process of vacuuming. Vacuuming is a process that involves moving a vacuum cleaner around a particular space, and to use a vacuum cleaner, you need to be the one moving that vacuum cleaner around, and moving it across all of the surfaces that you need to clean.

Roomba 891 Robot Vacuum


With a robot vacuum, you don’t have to be the one doing that, though. Instead, the robot vacuum uses a variety of different sensors to move across the surfaces that are in your home. These sensors can detect where the vacuum needs to go, what it needs to clean, and how it can get there in the fastest and most efficient manner.

In this buying guide, you’re going to learn about the iRobot Roomba 891 Robot Vacuum. iRobot is the manufacturer of the Roomba product line, and the Roomba robot vacuums are some of the best robot vacuums that you can find on the market. You are going to learn all about the iRobot Roomba 891, and what it has to offer.

You aren’t just going to learn about the iRobot Roomba 891, though, you’re also going to learn about the ECOVACS DEEBOT 500, Eufy RoboVac 30C, and the iRobot Roomba 890. Just as with the iRobot Roomba 891, you’re going to learn about the unique features and attributes that they offer.

Roomba Robot Vacuum Comparison Table

1 2 3
690 891 980
5X Suction 10X Suction


Multi-Surface Rubber Brushes
Ideal for Homes with Pets
Multi-Surface Rubber Brushes
Ideal for Homes with Pets
Entire Level Cleaning
13 x 13 x 3.6 in 13.9 x 13.9 x 3.6 in 13.9 x 13.9 x 3.6 in
7.8 pounds 12 pounds 8.7 pounds

What Does The iRobot Roomba 891 Robot Vacuum Offer?

The iRobot Roomba 891 Robot Vacuum is a robot vacuum that uses a 3-Stage Cleaning System – a system that has been patented by iRobot – to clean your floors. This is a system that consists of three individual stages, all of which are very well-designed and well-integrated into the vacuum cleaner.

iRobot Roomba 891 Review

When you are using the iRobot Roomba 891, the first stage that you will notice is the “Lift Stage”. This stage consists of using the two side-brushes, as well as the main brush that is in the middle of the iRobot Roomba 891, to lift the dirt, dust, and debris that is on your floor. Essentially, this is the process where all of that dirt, dust, and debris is loosened up. When that process is finished for that particular part of the space, it’s time for the “Sweeping Stage” where the dirt, dust, and debris is swept into the main suction pathway, which is right by the big brush. Finally, the last cleaning stage is the “Suction Stage”, which is where the dirt, dust, and debris is sucked into the vacuum.

In terms of performance, the iRobot Roomba 891 is one of the most powerful and efficient robot vacuums on the market. The 3-Stage Cleaning System is fantastic, and makes quick work of whatever is on your floors. It doesn’t matter if you are cleaning hard floors – such as those made of hardwood – or soft floors – such as rugs and carpets – because the iRobot Roomba 891 has an easy time vacuuming on those surfaces.

iRobot Roomba 891

To use the iRobot Roomba 891, you have a few choices. Most people use their smartphone, and that’s because using your smartphone gives you access to the robot vacuum at all times. You can create a custom schedule, turn the robot vacuum on and off, adjust the suction power, tell the vacuum to recharge, etc. Or, you can use a remote control, which requires you to be within a certain radius. If you have a Google Assistant or Amazon Alexa device, you can use that device, too.

On a single charge, the iRobot Roomba 891 gives you a total of ninety-minutes of battery-life. That’s not a lot of battery-life, necessarily, but it’s more than enough for a single cleaning.

iRobot Roomba 891

Summary of the iRobot Roomba 891 Features
– 3-Stage Cleaning System
– Dual Multi-Surface Rubber Brushes
– Patented Dirt Detect
– Runs for up to 90 minutes
See full feature details of the Roomba 891 on Amazon 🔗

In the end, the iRobot Roomba 891 is a great robot vacuum that gives you a significant amount of power, efficiency, and it’s also one of the easiest robot vacuums to use. If that’s what you need, then this is a great robot vacuum to use!

iRobot Roomba 891 Robot Vacuum

iRobot Roomba 891 Vs. Ecovacs Deebot 500

The Ecovacs Deebot 500 is a robot vacuum cleaner that consists of many of the same basic features that the iRobot Roomba 891 consists of. More specifically, using the Ecovacs Deebot 500, you have access to the same suction power and the same basic features, such as scheduling and being able to adjust the suction power and choose from different suction modes. And, you can use your smartphone to access these features and settings, or you can use a remote control, your Amazon Alexa device, or your Google Assistant device.

iRobot Roomba 891 Vs. Ecovacs Deebot 500

What’s nice about the Ecovacs Deebot 500, though, is the fact that it allows you to directly control the robot vacuum. Using your smartphone, you have access to an arrow-pad that allows you to maneuver the robot vacuum in whatever spaces you want. This can be very useful if there are specific areas you want to vacuum.

Along with that, you have access to 110-minutes of battery-life. That’s twenty-minutes more than the iRobot Roomba 891, and depending on how big your home is, that battery-life can be very useful.

Ecovacs Deebot 500

iRobot Roomba 891 Vs. Eufy RoboVac 30C

If you look at the Eufy RoboVac 30C and compare it to the iRobot Roomba 891, you’ll notice a variety of similarities, and a few key differences that transform the vacuuming experience.

iRobot Roomba 891 Vs. Eufy RoboVac 30C

To start with the similarities, the suction power is almost identical. You can use the Eufy RoboVac 30C to vacuum on just about any surface. Using your smartphone, a remote control, or an Amazon Alexa/Google Assistant device, you can use the Eufy RoboVac 30C. Along with that, the design is quite similar.

What does set the Eufy RoboVac 30C apart from the iRobot Roomba 891, though, is the fact that it comes with something known as a “Boundary Strip”. A Boundary Strip is a strip that you lay down in front of a doorway or some other space, and this strip lets off a signal that tells the Eufy RoboVac 30C not to pass. This is great if you want the Eufy RoboVac 30C to avoid going into certain areas, or you want it to remain within one particular area.

Eufy RoboVac 30C

iRobot Roomba 891 Vs. 890

As the title would suggest, the iRobot Roomba 890 is a lot like the iRobot Roomba 891. It might as well be the same robot vacuum, but with less suction power and efficiency.

iRobot Roomba 891 Vs. 890

Using the iRobot Roomba 890, you can vacuum on just about any surface. This is great, and it does give you a lot of options. But, unlike the iRobot Roomba 891, you aren’t going to have as easy of a time using the iRobot Roomba 890 on thick rugs and carpets. But you can still do it.

Other than that, all of the features found in the iRobot Roomba 891 are in the iRobot Roomba 890. If you want to save some money, though, and don’t mind having slightly less performance, the iRobot Roomba 890 is a very nice choice.

iRobot Roomba 890

For more info, read our: iRobot Roomba 980 vs. 891 vs. 690 Comparison


5 Recommended Robot Vacuum Cleaners
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iRobot Roomba s9+ (9550) eufy BoostIQ RoboVac 11S MAX eufy BoostIQ RoboVac 11S (Slim) Roborock S5 Robotic Vacuum and Mop Ecovacs Deebot 500
iRobot Eufy Eufy Roborock Ecovacs
s9+ 11S MAX 11S (Slim) S5 500
Continuous 100 min 100 min 150 min 110 min
12.2 x 12.2 x 3.5 in 17.8 x 13.7 x 4.8 in 12.8 x 12.8 x 2.9 in 13.8 x 13.7 x 3.8 in 12.9 x 12.9 x 3.1 in
20 pounds 5.73 pounds 5.73 pounds 7 pounds 6.7 ounces