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Roomba i3 vs i7 Comparison Review

comparison roomba i3 vs i7
There’s no doubt that Roomba is the best robot vacuum brand. One of their best innovations is the automatic self-emptying function.

In this Roomba i3 vs. i7 comparison review, find out how the new Roomba i3 and i3+ compare to the Roomba i7 and i7+, the first robot vacuum with automatic self-emptying.

About Roomba

roomba logo
iRobot Roomba is the best vacuum brand and the industry’s pioneer.

Among the reasons for the success of this brand is the huge investment in R&D. One of their best innovations is the iRobot® Clean Base Automatic Dirt Disposal. This is a new technology that enables the robot vacuum to empty itself automatically.

This new technology is available in the new Roomba models, including Roomba i3/i3+ and i7/i7+.

Price History

Comparison Table

Model
Popular choice
iRobot Roomba i3+ (3550)...
Great Choice
iRobot Roomba i7+ (7550)...
Dimensions
13.34 x 13.26 x 3.63 inches
13.34 x 13.34 x 3.63 inches
Weight
5 pounds
7.44 pounds
Mapping
Recharge & Resume
Automatically Docks and Recharges
Noise Level
68 db
68 db
Сleaning Area
1830 ft2 / 170 m2
1991 ft2 / 185 m2
HEPA Filter
Battery Capacity
1800 mAh
1800 mAh
Run time
75 min
75 min
Charging Time
150 min
120 min
Wi-Fi / Smartphone App
Full Bin Indicator
Check Price
Popular choice
Model
iRobot Roomba i3+ (3550)...
Dimensions
13.34 x 13.26 x 3.63 inches
Weight
5 pounds
Mapping
Recharge & Resume
Automatically Docks and Recharges
Noise Level
68 db
Сleaning Area
1830 ft2 / 170 m2
HEPA Filter
Battery Capacity
1800 mAh
Run time
75 min
Charging Time
150 min
Wi-Fi / Smartphone App
Full Bin Indicator
Reviews
Check Price
Great Choice
Model
iRobot Roomba i7+ (7550)...
Dimensions
13.34 x 13.34 x 3.63 inches
Weight
7.44 pounds
Mapping
Recharge & Resume
Automatically Docks and Recharges
Noise Level
68 db
Сleaning Area
1991 ft2 / 185 m2
HEPA Filter
Battery Capacity
1800 mAh
Run time
75 min
Charging Time
120 min
Wi-Fi / Smartphone App
Full Bin Indicator
Reviews
Check Price

Roomba i3 vs. i3+

irobot-roomba-i3+
View on Amazon

The Roomba i3 series is available in two variants; Roomba i3 (3150) and i3+ (3550).

  • The difference is that the Roomba 3150 doesn’t come with the iRobot Clean Base Automatic Dirt Disposal unit, but it works with the technology.
  • On the other hand, the i3+ comes with the iRobot Clean Base Automatic Dirt Disposal unit but



Roomba i7 vs. i7+

Roomba-i7+
View on Amazon

Just like the i3 series, there are two variants in the i7 series; Roomba i7 (7150) and the i7+ (7550).

  • Here again, the difference is that the base model, Roomba 7150, doesn’t come with the iRobot Clean Base Automatic Dirt Disposal unit though it works with the technology.
  • On the other hand, Roomba 7550 comes with the iRobot Clean Base Automatic Dirt Disposal unit.





There you have it, folks, an overview of the two models. Now, let’s get into the finer details.

Roomba i3 vs. i7 Comparison Review

In this section, find out how the two robot vacuums compare in light of the factors buyers consider when choosing the best robot vacuum.

1. Design and Aesthetics

The design of a robot vacuum determines where it can reach. Buyers are advised to go for robot vacuums that have low profile designs. In terms of aesthetics, some buyers have color preferences, and more so, it’s important to differentiate the different robot vacuums from how they look.

Roomba i3 and i3+

iroomba-i3
Despite being a newer model, the Roomba i3 and i3+ maintain the original round shape design.

In terms of dimensions, the i3/i3+ are slightly smaller with a 13.26-inches diameter and stand at 3.63-inches high.

As for the weight, the robots without the Clean Base unit weigh 7.44lbs. As for the finish, the Roomba 3150 and 3550 are black and grey with a woven-textured top interface.

2. Cleaning Performance

The most important consideration when buying a robot vacuum is the cleaning performance. In this section, find out what the Roomba i3 and i7 series have been designed for and how they perform in a real household.

Roomba i3 and i3+

Suction Power-E5
The Roomba i3 and i3+ are quite similar to the i7, and i7+ save for a few differences.

The two care best suited for bare floors, pet hair, and low pile carpets. Just like the i7 series, the i3 series models feature a 2nd Gen single-speed motor that delivers a maximum of 900 pa.

This is average suction and the sole reason why the two are not ideal for medium and high pile carpets. When it comes to the brush system, we still have the AeroForce dual multi-surface brush and a side sweeping brush for agitation and dirt pickup.

The only difference is that the i3 and i3+ come with a larger 0.5L bin. The full bin indicator function is intact.

3. Automatic Self Emptying

Unlike in the past when homeowners had to manually empty the Roomba’s bin, new technology has changed everything. Find out what the i3 and i7 series offer here.

Roomba i3 and i3+

Clean base roomba i3
The Roomba i3 and i3+ are also self-emptying Roombas. They can empty themselves automatically and can hold up to 60 days of dirt.

Just like the i7 series, these two Roombas also use AllergenLock ™ bags making them best for homes with allergy sufferers.

All the captured allergens remain tightly sealed in the bags.

4. Battery and Runtime

Another important consideration when choosing the best robot vacuum is autonomy. In this segment, find out what these two Roombas offer in terms of battery and runtime.

Roomba i3 and i3+


The Roomba 3150 and 3550, on the other hand, maintain the same 1,800mAh lithium-ion battery that lasts the robot for 75 minutes.

Here again, we have an intelligent robot vacuum that resumes cleaning after recharging. The recharge time is 3 hours on average.

5. Navigation and Mapping

Important

Under the hood, robot vacuums pack intelligent systems that enable the robot to find its way around your house. Some models have advanced systems that allow them to navigate more intelligently, while others have old systems that won’t navigate accurately in high traffic rooms.

In this section, let’s find out how the Roomba i3 series compares to Roomba i7.

Roomba i3 and i3+

Roomba i3 nav
On the other hand, the new Roomba i3 and i3+ come with the old Roomba navigation and mapping technology called iAdapt 1.0.

This technology is based on a Simultaneous Localization and Mapping (SLAM) algorithm. It relies on sensors only for localization; there are no real-time cameras as in the high-end models.

One shortcoming with this navigation system is that the robot gets stuck in high traffic rooms, and besides, the coverage is compromised as the robots clean in a random pattern. When it comes to boundary marking, the Roomba i3 and i3+ don’t have digital boundary marking.

6. Smart Features and Convenience

In this smart home era, buyers want gadgets and appliances that are smart home-ready. Besides being smart, the best purchases tag along with a lot of conveniences. Here, let’s see how the two Roomba models compare.

Roomba i3 and i3+

Roomba i3 Convenience
The Roomba 3150 and 3550 are also smart robot vacuums courtesy of 2.4GHz WiFi. You can tell the robot to start vacuuming while at the office, straight from the mobile app.

The two Roombas also support voice control via Alexa and Google Assistant. Interestingly, the Roomba i3 and i3+ come with iRobot Genius Home Intelligence, a new technology that offers homeowners to unlock a whole new cleaning experience tailored around their daily habits.

Roomba i3 vs. i7: What’s the Best Choice?

There you have it, folks, a face-to-face comparison of the Roomba i3 series vs. the i7 series. So, what’s the best choice?

Well, the Roomba i7 and i7+ are the best models in this comparison because of the advanced navigation and mapping system. With the i7 series, you get the latest iRobot navigation system dubbed iAdapt 3.0, while the i3 series uses the old iAdapt 1.0 navigation. You also get extra smart features with the Roomba i7, for example, Imprint Smart Mapping.

While the i7 and i7+ are the clear winners here, the i3 and i3+ are still great deals for homes with less traffic. The two vacuums offer the same level of cleaning as the i7, and more so, they are cheaper.

In a nutshell, the Roomba i7 and i7+ are the best if you are not on a budget, but if you want a self-emptying Roomba on a budget, the i3 and i3+ are the best options.

Maria Kamealoha

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