Roomba 891 Review

iRobot Roomba 891- A Smart Addition To Your Spotless Home

iRobot Roomba

iRobot Roomba 891





  • Premium 3-Stage Cleaning System
  • Power Lifting Suction Delivers 5x the Air Power
  • Dual Multi-Surface Rubbers
  • WiFi and Alexa Compatible
  • 90 Minutes Long-Lasting Battery Backup
  • Removes Dirt, Debris, Pet Hair, Kitty Litter and more
  • Patented Dirt Detect Sensors
  • Hard Floor, Hardwood, Carpet and other Surfaces Compatible


  • Leaves Scratches on Your Hardwood
  • A bit Noisy
  • Sometimes may Miss Spots and Pet Hair too

iRobot Roomba 891 Robot Vacuum, Connects to Wi-Fi, Alexa Compatible, Carpets, Hard Floors, Pet-Friendly

iRobot Roomba 891 cleans dust, removes disobedient spots, debris gets cleaned out off the beaten path, and when it’s exhausted, it returns to Home Base (Charging Station) to perform another instalment of cleanliness. 60 Decisions per second are what it has engineered for with a suite of wise-headed sensors to intelligently navigate across messy parts of the house. Cliff detects sensors to protect it, falling from stairs or stumbling from heights.

You will learn

The information provided here is a buying guide for potential customers. We have performed specific experiments on iRobot Roomba 891 Vacuum Cleaner. An unbiased review is what we think may help our visitors make the best decision before going for any product and so is for iRobot Roomba 891.

After reading this article, you can outsmart any individual when it comes to the knowledge of iRobot Roomba 891. We are going to cover every bit of the product. You are going to learn Design, Assembling Roomba 891, Performance, Specs, Pros, Cons, Safety, Price, Warranty and more.

iRobot Roomba 891- an Introduction

iRobot Roomba 891 Vacuum cleaner is an ideal demonstration of advancing technology in the home appliance industry. Traditional vacuum cleaners needed human intervention to function while on the other hand, smart and intelligent vacuum cleaners have eliminated any chance of humans taking part in the process.

Powered by several intelligent sensors, its navigation system learns on its own. It takes upto 60 decision per second to adapt and measure the dimensions of your home and performs the task efficiently.

It has its own patented dirt detect technology which can even detect as small as 10 microns dust, allergens and mites. With that technology, it can clean the hardest reach section of your house. The sensors supervise the robotic machine to clean more thoroughly to even complex area of the house.

Design of iRobot Roomba 891

Roomba 800 Design
Roomba 800 Design

Like all other Roomba series, iRobot Roomba 891 is designed circular with 3.59 inches of height which enables Roomba to reach across the furniture. A copper colour faceplate in the middle surrounded by a black outer surface with a black body at the very centre complement the sleek and intellectual design.

Clean Button is also there if in case you have not connected to iRobot home application. For portability point of view, iRobot Roomba 891 equipped with a handle through which one can easily carry the robot.

There is a bin indicator which will alert you if the bin is about to overflow. A filter is equipped with a capability of 99.99 per cent dust and debris filtration complimented by sweeping edge brushes crafted for steep corners.

It also has a bin release button at the very end of the outer ring which helps in emptying the bin effortlessly.

Prepare to Put Your Roomba at Work- Assembly

It’s easy and fast. Upon opening the box, you will get one iRobot Roomba 891, 1 Home Base ( Charging Station), 1 North American Line Cord and Owner’s Guide and Documentation Package.

You need to turn the robot over and remove the bin insert, and battery pulls tabs. Now you should put the Roomba on Home Base to charge for up to 3 hours.

Useful Roomba Advice
*We are advising you to fully charge the Roomba before very first cleaning attempt.

In the meantime, you can try connecting your Roomba to iRobot home application. The application is available on Apple and Android, and you can download both the version by clicking on the respective links.

Performance-Based on Various Standards

Hard Floor Cleaning Test

We used grains, powder, dust, pet hair and kitty litter for the purpose. It effortlessly eliminated all the articles out of the floor. At times, it does need to perform the task twice to cover the remaining particles.

Wooden Floor

Like the hard floor, it cleaned everything out of the way, but the only problem was visible scratches on the hardwood by the use if Roomba. So, if you have a wooden floor, use it cautiously.

High-Pile Carpet

The manoeuvrability and transition of Roomba 891 from hard floor to cushioned carpet is just worthwhile. It excelled in this test as well with full marks leaving no messy subject on the carpet.

Low-Pile Carpet

Well, the low-pile carpet did give Roomba a reality check. We noticed the robot struggling on the carpet and sometimes it gets stuck. Powder, kitty litter, dust, pet hair got cleaned off, and it did find it hard to remove grains off the low-pile carpet.

*Note: The performance is based on 30 days of continuous manoeuvrability of the product.

Instructions to Use iRobot Roomba 891

After charging the battery to its potential, you need to wake Roomba as it is in a dormant condition. You can manually wake Roomba up by pressing the “CLEAN” Button and again tap on the “CLEAN” Button to start the cleaning process.

You can also do the process as mentioned earlier through iRobot HOME app.

After the conclusion of the cleaning process or in between, you can pause the Roomba with the use of the same cleaning button.

If you think Roomba has done its work, you need to put Roomba on standby mode. Press and hold CLEAN Button until indicators turn off.

iRobot Roomba 891 Specifications

  • Specifications
  • Top Features
  • Battery
  • Miscellaneous
Model NumberRoomba 891
BatteryLithium Ion 1800 mAh
Length13.9 inch
Width13.9 inch
Height3.59 inch
Weight8.4 lbs.
  1. Connect it to WiFi
  2. Compatible with alexa for voice command
  3. Schedule Cleaning
  4. AeroForce Technology Embedded
  5. 3-Stage Cleaning System
  6. Long Battery Back-up for up to 90 Minutes
  7. Designed to Clean Under Furniture
  8. Can Easily Clean Hard to Reach Areas
  9. Takes 60 Decisions per Second to Thoroughly Clean Your Home
  10. Generates 5x the Power Through its Powerful Suction to pull-in Dust and Debris
  11. Easily Removes Pet Hair, No Corners Left Uncleaned

Lithium Ion Battery- Rechargeable

Battery SpecsDetails
Power1800 mAh
Running Time~90 Minutes
Full Charge~3 Hours
PriceCheck Price and Buy
Color OptionsBlack and Brown
Cleaning MethodDry
Floor TypeAll Indoor
Pet Hair RemovalYes
Filter TypeAeroForce Technology
Weight3 Kg
Threshold Clearance2 cm

How stuff works with Roomba 891

Powered by AeroForce technology which gives Roomba 891 5x the air power than its predecessors, Roomba is ready to deep-clean your home and make your home dirt free. Its tangle-free multi-surface brushes work simultaneously to suction dust, pet hair, grains, debris, dirt and any other small particles.

You can also schedule your Roomba to clean seven times a week. This helps in cleaning your home every day.

It also eliminates small particles of dust in the air so that the room’s air quality maintained healthy. Eventually, iRobot Roomba 891 is aiding to your and your family’s health.

iRobot Battery and Charging

The only way to revive the exhausted robot is by using the Home base. While charging the Roomba, the indicator lights will turn off to conserve energy.

You are advised to check the status of the battery by pressing the “CLEAN” Button. When fully charged, it will indicate through a solid green signal.

Battery- iRobot Roomba 891

While iRobot recommends using its own manufactured accessories, using the iRobot trademark battery will cost you with all your pocket.

There are other batteries in the market which could be best fit for your Roomba with a battery capacity of almost the double of iRobot original battery at an affordable price.

We have compiled a list of batteries that could be the best replacement for your roomba along with original battery. Click the link to check price and specifications.

Authentic iRobot Parts – XLife Extended Life Battery – Compatible with Roomba 500/600/700/800 Series Robots

Globalsaving auto robot Vacuum Cleaner rechargable Battery pack for iRobot Roomba 891 895 618 635 645 655

Safety Measures

  • To avoid electric shock, do not expose the electronics of Roomba 891. There are no user-serviceable parts inside, so even if you are a mechanic, try not opening up the circuit board.
  • Do not handle iRobot with wet hands as it may cause unwanted damage to your Roomba.
  • Before starting the cleaning process, you should remove excess clutter from the floor such as clothes, toys, or any object which may cause damage to your Roomba.
  • Any fragile object should be removed away from the floor to prevent accidental damage to your precious objects.
  • Do not spray or pour liquids on your Roomba.

Guide to Maintenance- Care for Robot

Your Robotic machine may need your assistance to keep functioning at its best. You should empty Roomba bin after every 2 to 3 cleaning to prevent overflow of the bin. It takes almost a minute to do so.

iRobot recommends the following actions as a mandatory requirement to help Roomba perform at its peak with every passing day.

Here is the cleaning process described in detail:

  • You should empty the bin after every 2 to 3 cleaning processes. It might seem hectic, but you have to do this for evergreen functioning Roomba.
  • If you notice Roomba suctioning fewer dust particles from your floor, you should clean the filters and extractors ASAP.

Accessories Replacement

  • Accessories Care and Replacement
  • Note
Robot PartCare FrequencyReplacementPrice
BinAfter each use--
FilterOnce per week (Twice per week in home with pets)Every two monthsCheck and Buy
Full Bin Sensors Front Caster WheelOnce every two weeksEvery 12 months-
Side Bursh Cliff Sensors Charging ContactsOnce per month--
ExtractorsOnce every 3 or 4 months with pets in homeEvery 6-12 monthsCheck Price


The warranty of this roomba is for 1 year and other accessories hold the warranty period of 6 months such as batteries.



What is AeroForce Technology?

The AeroForce is a cleaning system which helps Roomba in performing the cleaning tasks efficiently. It comprises of three ground-breaing technologies.

  1. Tangle Free Debris Extractors: It helps in extracting debris from far reach corners and areas
  2. An Airflow Accelerator: which helps in extracting the dust, mites, pet hair, kitty litter and debris efficiently.
  3. High Efficiency Vacuum: It just another technology complements to Airflow Accelerator.

Do Roomba Really Work?

Roomba is one of the best vacuum cleaners across the globe. iRobot has the best technologies to craft in its series of robots. They have patented dirt-detect technology, 3-stage cleaning system and advanced sensors which makes Roomba one of the most sought after vacuums in USA.

Yes, therefore, Roomba does work effectivley.

How Roomba 891 Works?

Its navigation system is all we can chant about. For any vacuum cleaner to work efficiently, there is a special requirement that the machine has to fulfill that is effortless Navigation.

Roomba 891 not only adept in navigating your home but it is also compimented by 3-stage cleaning system and powerful suction. Its dirt detect sensors seek out the dirtier area of your house and its navigation system guide it through that area and the cleaning process starts.

Does Roomba clean up dog Hair?

Yes. In fact, there is no other robotic vacuums adept more enough than Roomba series of robots. A premium 3-stage cleaning system along with smart navigation and powerful suction delivers more versatile cleaning than ever. It facilely can overcome dog, cat, rabbit or any other pet's hair.

Can Roomba 891 work without

Connecting Roomba with "iRobot HOME" application gives you more powerful features than without connecting it. Though, the answer to this question is "Yes". Your Roomba 891 can work without connecting it to the application but you have to connect it to WiFi for better cleaning.

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