If you’re shopping for an iRobot robot vacuum, there’s a good chance you’ve spent time comparing the Roomba i3 vs i7 models. In this Roomba i3 vs i7 review, we’ll cut through the clutter and explain the differences between these two iRobot models.
The iRobot Roomba i7+ stands out with its advanced navigation and multiple map storage capabilities, making it ideal for larger or multi-level homes. Equipped with vSLAM navigation technology, it offers precise and efficient cleaning routes, and its ability to create and store up to 10 different maps allows for highly customized cleaning experiences. The i7+ also features no-go zones and virtual walls, enhancing its ability to avoid specific areas without physical barriers. Additionally, the Clean Base automatic dirt disposal system adds convenience by handling dustbin emptying, which is a significant advantage for busy households.
- Advanced navigation
- Multi-map storage
- Custom no-go zones
- Automatic dirt disposal
- High-efficiency filtration
- Slightly below-average battery
The iRobot Roomba i3 EVO offers a balanced blend of performance and affordability, making it a compelling choice for those who seek efficient cleaning without the advanced features of higher-end Roomba models. With the addition of Smart Mapping in its EVO update, the i3 has become significantly more capable, allowing it to navigate and clean with improved efficiency. Although it lacks the multiple map storage and sophisticated navigation technologies of some Roombas, the i3 EVO still delivers robust cleaning performance across various floor types, maintaining iRobot's reputation for reliability and effectiveness in robotic vacuums.
- Smart Mapping
- Efficient cleaning
- Recharge and resume
- Automatic dirt disposal
- Basic navigation
- Single map storage
- Longer charge time
- No no-go zones
- Less feature-rich
Roomba i3 vs i3+ vs i7 vs i7+
Both the i3 and i7 Roomba models are a part of iRobot’s i Series launch in 2018. At the time of launch, the i7 had more capabilities. In 2022, however, the i3’s underlying software was upgraded, and the Roomba i3 became the i3 EVO.
Even the existing i3 Roombas in peoples’ homes were transformed into i3 EVO Roombas once the software upgrade was installed. The upgrade brought advanced features, and we’ll be comparing that upgraded i3 EVO to the i7. The most significant feature iRobot added with the EVO update was Smart Mapping. And, while the i7 still remained the more advanced Roomba, Smart Mapping made the Roomba i3 EVO much more capable than it previously was.
Models with the plus designation, the i3+ EVO and i7+, also come with an auto-empty docking station.
Both robots have recently been superseded by iRobot’s new j-Series (read our Roomba Combo j7+ review). To keep things simple, we’ll simply try and call them the i3 and i7 as we talk about the similarities and differences.
Differences: Roomba i3 vs i7
Let’s jump right into what is different between these two robots. There are two primary differences between the Roomba i3 and i7: navigation and price. The difference between the two robot vacuums’ navigation translates to other capabilities, too.
Here’s what’s different when comparing the Roomba i3 vs i7.
- The Roomba i3 uses a floor tracking system to create maps and navigate in neat rows. The i7 also does this, but it uses a more advanced system that leverages a camera. In daily use, most people wouldn’t notice this difference.
- The i3 can store a single map, which iRobot calls a Smart Map. In contrast, the i7 can store up to 10 unique maps. This is especially important for multi-level homes.
- The more advanced mapping and navigation system on the i7 allows the creation of no-go zones and virtual walls to keep it away from areas where you prefer it not to go when cleaning. This capability is absent in the i3.
- Completely charging the i3’s battery takes 3 hours, one hour longer than charging the i7’s.
- Where aesthetics are concerned, the i3 is available in gray, whereas the i7 is available in black and silver.
- The i7, with its more advanced navigation and other features, has a higher price tag than the less sophisticated i3.
That covers the significant differences.
Robot vacuum shopping? Check out our other reviews of robot vacuum cleaners, comparisons and buying guides!
Similarities: Roomba i3 vs i7
There’s a lot these two Roombas share in common. Here are the similarities we think would help make a decision between the i3 EVO and i7.
- Both the i3 and i7 perform well on both hard floors and carpets, easily picking up just about any type or size of debris on all floor types, including tiles.
- The two vacuums have iRobot’s patented dual-brush design, which means that they are especially good for cleaning carpets.
- The majority of the Roomba i3 and i7’s features require the robot to be Wi-Fi connected.
- The Roomba i3 and i7 have similar power levels. According to iRobot, their suction is 10 times that of the older 600 Series Roomba robot vacuum models.
- When the i3 and i7 detect an increase in dirt and debris, they will go into DirectDetect cleaning mode, performing several passes over the area until it has been cleaned.
- Both Roomba models are compatible with Amazon Alexa and Google Assistant smart home technologies.
- They both can come with the iRobot’s Clean Base system, which both charges and empties the robot’s dustbin into a disposable bag after a cleaning run. iRobot says the bag can hold up to 60 days’ worth of debris. When sold with the self-emptying base, the robots simply have a + (plus sign) added to their names, making them the Roomba i3+ EVO and Roomba i7+.
- iRobot’s Clean Station does not have to be purchased at the same time as either robot vacuum, as the auto-emptying dock is sold separately.
- Both robots have a 75-minute battery run time, which is slightly below average. However, they each have a recharge-and-resume feature. That means when their battery is low, they return to their base to recharge and then resume cleaning right where they left off.
- The Roomba i3 and i7 each have one side brush for edge cleaning and feature high-efficiency filtration.
RELATED: See our comparison of the Roomba S9+ and Roborock S7+!
Which Roomba should you buy, the i3 or 17?
In conclusion, both of these iRobot vacuums are a good buy. They also have similar cleaning performances. The Roomba i7 is better for someone who wants more smart features or requires multiple map storage, and the lower-priced, less-featured Roomba i3 is good for someone who wants something more affordable. Whichever you choose, you’ll be getting a good iRobot Roomba model that cleans all floor types well.
Comparison table: Roomba i3 vs i7
Here are some of the features and specifications we’ve mentioned above, as well as a few other characteristics that might help you in your buying decision.
| Roomba i3 | Roomba i7 | |
| Model | 3150 | 7150 |
| Model w/Clean Station | 3550 | 7550 |
| Navigation | Floor Tracker | vSLAM |
| Map Storage | Yes, 1 | Yes, 10 |
| Room Cleaning | Yes | Yes |
| No-Go Zones/Virtual Walls | No | Yes |
| Max Cleaning Time | 75 min | 75 min |
| Battery Charge Time | 3 hours | 2 hours |
| Dual Brushroll | Yes | Yes |
| Amazon Alexa | Yes | Yes |
| Google Assistant | Yes | Yes |
| Voice Control | Yes | Yes |
| Colors | Grey | Black and Silver |
| Buy | Amazon | Amazon |
