Roomba i3 vs. Roomba 675: Is the Upgrade to Smart Mapping Worth It?

The robotic vacuum market is crowded, but few brands have built the trust and recognition that iRobot enjoys. When deciding between an entry-level model and a smarter, more advanced option, many consumers find themselves weighing the Roomba 675 against the Roomba i3 (or i3+ EVO). These two models represent very different philosophies in home automation: one prioritizes affordability and simplicity, while the other introduces intelligent navigation and long-term convenience at a mid-tier price.

The Roomba 675 is a reliable workhorse for smaller spaces. It brings core iRobot features—like Dirt Detect technology and Wi-Fi connectivity—to a budget-friendly price point, making it accessible for first-time buyers or those with modest cleaning needs. However, it relies on a random bounce pattern to navigate, lacks the ability to resume cleaning after recharging, and requires frequent emptying. In contrast, the Roomba i3 series steps up with systematic navigation, visual mapping, and the option to add a self-emptying Clean Base. This means it cleans in straight lines, remembers your home layout, and can go up to 60 days without needing your attention if you opt for the i3+ version.

So, is the jump from the 675 to the i3 worth it? For many households, the answer depends on how much value you place on efficiency, automation, and long-term maintenance. This article dives deep into the Roomba i3 vs. Roomba 675 comparison, evaluating everything from cleaning performance and battery life to smart features and real-world usability. By the end, you’ll have a clear understanding of which model aligns best with your home size, lifestyle, and cleaning expectations.

Product Overviews

Roomba i3 / i3+ EVO

The Roomba i3 sits firmly in the mid-range segment of iRobot’s lineup, offering a smart balance between performance and price. It’s designed for users who want more than just basic automated cleaning but aren’t ready to invest in premium models like the i7+ or s9+. The standout feature of this series is iAdapt 3.0 Navigation with Visual Mapping, which allows the robot to learn your home layout and clean in efficient, straight rows rather than random patterns. This makes a noticeable difference in coverage, especially in homes larger than 800 square feet.

One of the most compelling aspects of the i3 series is the distinction between the i3 and i3+ models. The robot itself is identical in both versions—the only difference is the inclusion of the Clean Base Automatic Dirt Disposal unit with the i3+. This base empties the robot’s dustbin after every cleaning cycle, sealing debris into a disposable bag that can hold up to 60 days’ worth of dirt. If you choose the standard i3, you can still purchase the Clean Base separately later, giving you flexibility based on your budget.

The i3 delivers 10x Power-Lifting Suction compared to the older 600 series, making it highly effective on both hard floors and carpets. It uses dual rubber extractors instead of bristle brushes, which resist tangling—especially useful in homes with pets. Additional features include Recharge and Resume, so if the battery runs low, the robot returns to its dock, recharges, and picks up where it left off. It also integrates with the iRobot Home App, supports Alexa and Google Assistant, and can pair with the Braava jet m6 mop via Imprint Link for automated vacuuming and mopping sequences.

That said, the i3 isn’t without limitations. While it creates visual maps in the app, it does not support room-by-room cleaning commands or virtual Keep Out Zones. You can’t tell it to “clean the living room only” or draw boundaries in the app. If you want to block off areas, you’ll need to use physical Dual Mode Virtual Wall Barriers, sold separately. Still, for its price, the i3 offers a remarkable leap in intelligence and convenience over entry-level models.

Check the latest price of [Roomba i3+] on Amazon [link]
See current deals on [Roomba i3] here [link]

Roomba 675

At the other end of the spectrum, the Roomba 675 is iRobot’s most affordable Wi-Fi-enabled robot vacuum, making it an attractive entry point for those new to robot vacuums or on a tight budget. It retains the core 3-Stage Cleaning System found across iRobot’s lineup, combining dual brushes, a side brush, and strong suction to pick up dirt, dust, and pet hair. With 600Pa of suction power, it performs well on hard floors and low-pile carpets, though it struggles a bit more with deeply embedded debris in high-pile rugs.

One of its strongest features for a budget model is Dirt Detect Technology, which uses sensors to identify high-traffic or heavily soiled areas and spends extra time cleaning them. You’ll see a green light flash when it detects dirt, and the app logs these events so you can see where your home gets the messiest. It also connects to the iRobot Home App, allowing you to schedule cleanings, start/stop cycles remotely, and receive maintenance alerts.

However, the 675’s biggest compromise is its navigation system. It uses a random bounce pattern—essentially moving in straight lines until it hits a wall or obstacle, then changing direction. This means it often misses spots in larger rooms or cleans the same area multiple times, leading to inefficient coverage. It doesn’t create maps, can’t remember your home layout, and lacks Recharge and Resume. If it runs out of battery before finishing, it simply stops—no automatic return to complete the job.

The 300ml dustbin fills up quickly, especially in homes with pets, requiring daily or even multiple emptyings per week. It also uses a basic foam filter, which is washable but not effective at trapping fine allergens like pollen or pet dander. While it supports voice control via Alexa and Google Assistant, its smart features are limited to scheduling and remote start—no mapping, no room selection, and no integration with mopping robots.

Despite these limitations, the 675 is a solid performer for small apartments or homes under 600 sq. ft. where its 90-minute battery can cover the entire space in one go. It’s durable, reliable, and offers brand-name quality at a price that undercuts most competitors.

View [Roomba 675] on Amazon [link]

Comparison Criteria

To determine which robot vacuum better suits your needs, we evaluated the Roomba i3 and Roomba 675 across six key criteria:

1. Navigation & Efficiency – How intelligently does each robot move? Does it clean systematically or randomly? Can it cover large areas without missing spots?
2. Cleaning Performance – How well do they pick up debris on different floor types? How effective are they on pet hair, edges, and high-traffic zones?
3. Battery & Autonomy – What’s the runtime? Does it support Recharge and Resume? Can it empty itself?
4. Smart Features & App Control – Does it create maps? Can you control it via app or voice? Are there virtual boundaries or room selection?
5. Maintenance & Durability – How easy is it to clean and maintain? How often do filters and brushes need replacing?
6. Value for Money – Does the price justify the features, especially when considering long-term convenience and performance?

These metrics help separate the genuinely smart upgrades from mere marketing claims, giving you a clear picture of where each model excels—and where it falls short.

Head-to-Head Comparison

Navigation and Coverage

How a robot vacuum navigates your home is one of the biggest factors in its real-world performance. The Roomba i3 uses iAdapt 3.0 with Visual Odometry, a system that allows it to build a digital map of your home over time. It moves in straight, parallel lines, similar to how you’d mow a lawn, ensuring consistent and thorough coverage. It remembers where it’s been, avoids redundant passes, and adapts its path around furniture and obstacles. While it can’t label rooms or let you clean “the kitchen” on command, its systematic cleaning pattern dramatically reduces the chance of missed spots—especially in homes over 800 sq. ft.

In contrast, the Roomba 675 relies on bumper-based random navigation. It moves forward until it hits a wall or leg of furniture, then changes direction. This method is inefficient and often results in uneven coverage—some areas get cleaned multiple times, while others are skipped entirely. It doesn’t create maps, can’t learn your home layout, and has no way to optimize its path. In larger spaces, this randomness becomes a liability, with the robot appearing to “waste” its battery on redundant movements.

Real-world testing shows that the i3 completes cleaning tasks 30–40% faster than the 675 in the same space, thanks to its optimized route. It also handles multi-room layouts better, smoothly transitioning between areas without getting confused. The 675, while capable of eventually covering the same ground, does so haphazardly and may require multiple runs to achieve similar results.

🏆 Section Winner: Roomba i3
The i3’s systematic navigation and visual mapping provide far more efficient and reliable coverage, especially in medium to large homes.

Cleaning Performance

When it comes to actual cleaning, both robots use a 3-stage system, but the i3 pulls ahead in suction power, brush design, and overall debris removal.

The Roomba i3 boasts 10x the Power-Lifting Suction of the 600 series, translating to stronger pickup on both hard floors and carpets. It uses dual rubber extractors—tangle-free brushes that flex to stay in contact with floors and resist hair wrap. This makes it exceptionally good for pet owners, as it handles long hair and shedding without constant maintenance. Testing shows it achieves a 99% debris removal rate on hardwood, low-pile carpet, and high-pile carpet, placing it in the top tier of robot vacuums for cleaning performance.

The Roomba 675, while no slouch, uses a 600Pa suction motor and a mixed brush system—one rubber and one bristle brush. While this combo works well for general dust and crumbs, it’s more prone to tangling with pet hair. The bristle brush can also scatter fine debris rather than lifting it. On hard floors, it performs adequately, but on thick carpets, it struggles to agitate deep-seated dirt as effectively as the i3. Users report the dustbin filling up quickly—sometimes after just 10 minutes in a dirty environment—due to its small 300ml capacity.

Both models feature a single spinning side brush for edge cleaning. Neither excels at deep corner cleaning (a weakness of circular robots), but the i3’s systematic path ensures it runs along baseboards more consistently, while the 675’s random pattern means it only hits edges by chance.

🏆 Section Winner: Roomba i3
With stronger suction, tangle-free brushes, and superior debris removal across all floor types, the i3 is the clear winner for homes with pets or mixed flooring.

Battery Life and Autonomy

Battery performance and autonomy are where the gap between these two models becomes most apparent.

The Roomba i3 offers up to 120 minutes of runtime on a single charge—enough to clean homes up to 1,500 sq. ft., depending on layout and clutter. More importantly, it features Recharge and Resume, meaning if it runs low on power, it automatically returns to the dock, recharges, and then resumes cleaning where it left off. This ensures your entire home gets cleaned, even if it takes multiple charging cycles.

The Roomba 675, meanwhile, has a 90-minute battery—sufficient for small apartments under 600 sq. ft. But here’s the critical flaw: it does not support Recharge and Resume. If it runs out of battery mid-clean, it simply stops. You’ll return to a half-cleaned floor and have to manually restart it. This makes it unreliable for larger spaces or homes with multiple rooms.

Additionally, the i3+ model introduces self-emptying capability via the Clean Base. After each clean, the robot docks and automatically empties its bin into a sealed bag that holds up to 60 days of debris. This is a game-changer for busy households—no daily emptying, no dust exposure. The 675 has no self-emptying option and requires manual emptying after every run, which can be tedious given its small bin.

🏆 Section Winner: Roomba i3+
The 120-minute battery, Recharge and Resume, and optional self-emptying make the i3+ vastly more autonomous and convenient.

Smart Features and App Control

Smart features separate modern robot vacuums from basic automated sweepers. Here, the Roomba i3 again outshines the 675.

The i3 creates visual maps of your home in the iRobot Home App. You can see where it cleaned, view cleaning history, and even see the path it took. While you can’t select specific rooms or set virtual Keep Out Zones in software, the map adds transparency and lets you monitor performance. It also supports Imprint Link, allowing it to automatically trigger the Braava jet m6 mop after vacuuming—ideal for hands-free floor care.

The 675, while Wi-Fi enabled and app-compatible, has no mapping capabilities. The app lets you schedule cleanings, start/stop remotely, and see cleaning duration and Dirt Detect events, but you can’t view a map or track coverage. It’s smart in basic ways but lacks the intelligence of a true smart vacuum.

Both support voice control via Alexa and Google Assistant, allowing you to say, “Alexa, tell Roomba to start cleaning.” And both can be integrated into routines—like having it clean after you leave for work.

However, neither supports software-based virtual walls. To block off areas, you must use physical barriers. The i3 is compatible with Dual Mode Virtual Wall Barriers (sold separately), while the 675 works with older Virtual Wall beacons—though it doesn’t include one, unlike the 690 model.

🏆 Section Winner: Roomba i3
The visual mapping, cleaning history, and Imprint Link support give the i3 a clear edge in smart functionality.

Maintenance and Durability

Maintenance is a daily reality with robot vacuums, and how easy it is to clean and maintain them impacts long-term satisfaction.

The Roomba i3 uses a washable 0.5L dustbin and a high-efficiency filter that captures 99% of allergens. The dual rubber brushes are tangle-resistant and require less frequent cleaning—typically once a week for most homes. The filter should be replaced every 2–3 months (more often with pets). If you have the i3+, the Clean Base bag needs changing only every 30–60 days, drastically reducing user interaction.

The Roomba 675 has a smaller 300ml bin that fills up quickly, requiring daily emptying in pet-heavy or high-traffic homes. Its foam filter is washable but less effective at trapping fine particles. The mixed brush system (rubber + bristle) is more prone to hair wrap, so you’ll need to clean the brushes weekly—or even more often with long-haired pets.

Both robots have similar maintenance routines: clean brushes, wipe sensors, and clear wheels monthly. The iRobot Home App sends maintenance reminders for both models, helping you stay on top of upkeep.

In terms of durability, both are built with iRobot’s signature sturdy plastic and have proven reliable over time. However, the i3’s advanced sensors and mapping system may require more frequent sensor cleaning to maintain accuracy.

🏆 Section Winner: Roomba i3
With larger bin, better filter, tangle-free brushes, and optional self-emptying, the i3 wins for low-maintenance ownership.

Value for Money

When evaluating value, it’s not just about the sticker price—it’s about long-term convenience, performance, and how well the robot fits your lifestyle.

The Roomba 675 typically sells for $150–$250, making it one of the most affordable Wi-Fi robot vacuums with brand reliability. It’s an excellent choice for small apartments, tight budgets, or as a secondary unit. If you live in a studio or one-bedroom and mostly have hard floors, it delivers solid performance for the price.

The Roomba i3 starts around $300–$400, with the i3+ usually priced $100 higher due to the Clean Base. While more expensive upfront, it offers premium features—like systematic navigation, self-emptying, and superior suction—at a fraction of the cost of flagship models. For most households, especially those with pets or larger spaces, the long-term convenience justifies the higher price.

Consider this: the i3+ can go 60 days without emptying, while the 675 needs daily attention. Over a year, that’s 300+ fewer times you have to touch the vacuum. That’s not just convenience—it’s a quality-of-life upgrade.

🏆 Section Winner: Roomba i3+
For most users, the combination of smart navigation, strong cleaning, and self-emptying offers superior long-term value, even at a higher price.

Pros and Cons Table

Best Use Case Recommendation

Choose the Roomba i3 / i3+ if:

• You have pets: The tangle-free rubber brushes and high-efficiency filter are far superior for handling hair and dander.
• Your home is over 800 sq. ft.: The systematic navigation and Recharge and Resume ensure complete coverage.
• You want automation: The i3+ Clean Base allows you to go 60 days without emptying, turning cleaning into a truly hands-off task.
• You have mixed flooring: It transitions seamlessly between carpet and hard floor, delivering strong performance on both.

Choose the Roomba 675 if:

• You are on a strict budget: It offers iRobot reliability at the lowest price point with Wi-Fi.
• You live in a small space: Ideal for studios or 1-bedroom apartments under 600 sq. ft.
• You have mostly hard floors: Performs well where deep carpet cleaning isn’t a priority.
• Allergies are not a major concern: The basic filter is fine for general dust but not for fine allergens.

Conclusion

The Roomba i3 vs. Roomba 675 comparison ultimately comes down to efficiency versus economy.

The Roomba 675 is a capable, no-frills robot vacuum that proves you don’t need to spend a fortune to get Wi-Fi scheduling and basic automated cleaning. It’s a solid choice for small spaces and budget-conscious buyers. But its random navigation, lack of Recharge and Resume, and frequent emptying requirements limit its usefulness in larger or busier homes.

The Roomba i3 (and especially the i3+) represents a significant upgrade in both intelligence and convenience. With systematic cleaning, superior suction, tangle-free brushes, and the option to self-empty, it transforms from a novelty into a true household helper. While it lacks room-by-room control, it delivers 99% debris removal across all floor types—a performance level shared only with iRobot’s most expensive models.

Final Verdict: For most households, the Roomba i3+ offers the best long-term value. The jump in cleaning intelligence and the convenience of the Clean Base easily justify the higher cost. The Roomba 675 remains a strong recommendation—but only for small apartments and buyers on a tight budget.

If you can stretch your budget, the i3+ is the smarter investment—one that pays off in saved time, cleaner floors, and fewer chores.