The Roomba 890 and 891 are part of iRobot’s 800 series, designed to offer enhanced cleaning power, smart features, and greater convenience compared to the lower-end 600 series. While these two models share many features, there are subtle differences that could make one a better fit for your home. In this comparison, we’ll examine their cleaning performance, design, navigation, smart features, and value, helping you choose the best model for your needs.
Design and Build Quality
Size, Weight, and Aesthetics
Both the Roomba 890 and 891 share a very similar design and build, featuring the same round shape, which allows them to navigate easily under furniture and around tight corners. The differences between the two models mainly come down to the design of the top panel, where the 891 features a slightly different accent color and trim compared to the 890.
| Feature | Roomba 890 | Roomba 891 |
|---|---|---|
| Dimensions | 13.4 x 3.6 inches | 13.4 x 3.6 inches |
| Weight | 8.4 lbs | 8.4 lbs |
| Finish | Black with Silver Trim | Black with Copper Accent |
Both models weigh the same and have identical dimensions, making them equally effective at fitting into small storage spaces. The main visual difference is the accent trim on the 891, giving it a slightly more modern appearance compared to the 890’s classic design.
Cleaning Performance
Suction Power and Brush System
Both the Roomba 890 and 891 feature iRobot’s advanced cleaning system, including the AeroForce® 3-Stage Cleaning System with Dual Multi-Surface Brushes and the specially designed Edge-Sweeping Brush. The cleaning performance of both models is quite similar, but the Roomba 891’s AeroForce technology provides slightly improved suction power and efficiency, resulting in better overall cleaning.
| Cleaning Aspect | Roomba 890 | Roomba 891 |
|---|---|---|
| Suction Power | High | High |
| Brush System | AeroForce® Dual Brushes | AeroForce® Dual Brushes |
Both models are highly effective at picking up dirt, dust, and debris from various surfaces. However, the Roomba 891’s slightly stronger suction may offer marginal improvements in collecting pet hair and debris from carpets, especially in homes with more foot traffic.
Performance on Various Surfaces
| Surface Type | Roomba 890 Performance | Roomba 891 Performance |
|---|---|---|
| Hardwood Floors | Excellent | Excellent |
| Low-Pile Carpets | Good | Excellent |
| High-Pile Carpets | Fair | Good |
Both models perform exceptionally well on hardwood floors, picking up dirt and debris with ease. The Roomba 891, however, performs slightly better on low-pile and high-pile carpets, thanks to the additional suction power that improves its ability to agitate and lift debris from deeper carpet fibers.
Navigation and Mapping
iAdapt Navigation Technology
The Roomba 890 and 891 both feature iRobot’s iAdapt® Navigation system, which uses sensors to detect and navigate obstacles, along with dirt detection sensors that alert the robot to areas that require additional cleaning. The two models are quite similar in their ability to map the room, but there are slight differences in their performance, particularly with cleaning coverage.
| Navigation Feature | Roomba 890 | Roomba 891 |
|---|---|---|
| Navigation System | iAdapt® Navigation | iAdapt® Navigation |
| Smart Mapping | No | No |
| Obstacle Avoidance | Basic | Advanced |
The Roomba 891 comes with a slightly improved obstacle avoidance system, allowing it to detect and navigate around furniture more smoothly. While both models feature bump sensors to help them navigate corners and edges, the 891 is marginally more effective at cleaning along the perimeter due to these advancements.
Battery Life and Runtime
Long-lasting Runtime
Both the Roomba 890 and 891 have a similar battery life, designed to clean for up to 90 minutes on a single charge. This is sufficient for cleaning small to medium-sized homes, but larger homes may require multiple sessions or a recharge in between cleaning cycles.
| Battery Aspect | Roomba 890 | Roomba 891 |
|---|---|---|
| Runtime | ~90 minutes | ~90 minutes |
| Recharge and Resume | No | No |
Neither the Roomba 890 nor the 891 includes the recharge and resume feature, meaning that if the battery runs out during cleaning, the vacuum will need to be manually restarted once charged. However, the 891’s slightly better obstacle navigation helps it cover more area during each cleaning session, maximizing its runtime.
Smart Features
Wi-Fi Connectivity and App Control
Both the Roomba 890 and 891 offer Wi-Fi connectivity, allowing you to control them remotely through the iRobot Home app. They also support voice commands via Amazon Alexa and Google Assistant. The difference between the two models lies in the additional customization options available with the Roomba 891’s app integration.
| Feature | Roomba 890 | Roomba 891 |
|---|---|---|
| Wi-Fi Compatibility | Yes | Yes |
| App Control | Basic | Advanced |
| Voice Commands | Alexa/Google | Alexa/Google |
The Roomba 891 offers more advanced features within the iRobot Home app, such as customizable cleaning schedules, targeted room cleaning, and more in-depth cleaning reports. The Roomba 890 has basic Wi-Fi control but lacks the same level of customization and remote control features that the 891 offers.
Maintenance and Accessories
Similar Maintenance Requirements
Both the Roomba 890 and 891 require regular maintenance, including emptying the dustbin, cleaning the brushes, and replacing the filter as needed. However, the Roomba 891 features a slightly larger dustbin and a high-efficiency filter, which can be more advantageous for homes with pets or higher debris levels.
| Maintenance Aspect | Roomba 890 | Roomba 891 |
|---|---|---|
| Dustbin Capacity | 600 ml | 600 ml |
| Filter Type | High-Efficiency | High-Efficiency |
Both models use the same dustbin capacity and filter type, which are designed to capture allergens and small particles. The maintenance for both vacuums is relatively simple and involves cleaning the dustbin, removing debris from the brushes, and replacing the filter every few months.
Price and Value
| Aspect | Roomba 890 | Roomba 891 |
|---|---|---|
| Price Range | Lower | Higher |
| Value for Money | Good | Excellent |
The Roomba 890 is typically priced lower than the 891, making it a more affordable option for users on a budget. However, the Roomba 891 provides more advanced features, greater customization in the app, and improved navigation, making it a better investment for those looking for a higher-performing robot vacuum.
Who Should Choose Which?
| User Type | Recommended Model |
|---|---|
| Budget-Conscious | Roomba 890 |
| Basic Cleaning Needs | Roomba 890 |
| Pet Owners | Roomba 891 |
| Smart Home Users | Roomba 891 |
Final Verdict
Both the Roomba 890 and 891 offer solid cleaning performance and smart features, but they cater to slightly different needs. The Roomba 890 is a great budget option for those who need reliable cleaning without extra bells and whistles. It’s perfect for homes with hard floors or low-pile carpets and offers great value for money.
- Choose the Roomba 890 if you need an affordable, reliable robot vacuum for basic cleaning tasks and don’t need advanced features or extra customization.
- Opt for the Roomba 891 if you want better navigation, a more advanced app experience, and superior cleaning performance on carpets. It’s a better choice for pet owners, those with larger homes, or anyone seeking a robot vacuum with more customization options and improved obstacle avoidance.
Both vacuums offer great value, but the Roomba 891 stands out for its premium features and improved cleaning capabilities.