iRobot Roomba 675 vs 677

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The Roomba 675 vs 677 matchup raises the question – Is there any difference between the 675 and 677? The model numbers are almost identical. It’s true these two are rather similar across the board, but there is a difference that makes one better than the other.

Keep reading to find out what the differences are that made me pick one over the other, despite their differences.

I’ll give you one spoiler, the Roomba 675 comes out on top as the better choice than the 677.

FeatureFilter TypeSchedulingRemoteVoice Control
#1. Roomba 677
iRobot Roomba 677 Smart Wi-Fi Connected Multisurface Robot Vacuum with
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HEPA Yes No Yes
#2. Roomba 675
Our Best Pick
iRobot Roomba 675 Robot Vacuum-Wi-Fi Connectivity, Works with Alexa, Good
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HEPA Yes No Yes



The Roomba 677 is 13.5” wide and 3.5” high – which means it can reach under furniture like sofas and beds easily. Although it does move slowly enough while cleaning, the attached bumpers at the front of the device protect it from bumps and heavy impacts and there is a small knob on the top of the device to let it know if it can fit under certain types of furniture. 

The Roomba 675 is similar in terms of size to the 677. It also measures up at 13.5 ” wide and 3.5” high, giving it the same benefits and also includes the attached bumpers and top knob to prevent accidents and impact.

No difference here with 677 vs 675, so it’s a tie.


The Roomba 677 weighs 6.77lbs, making it light enough to carry from room to room. Think about the trouble of lugging a heavy corded vacuum cleaner around the house – we’ve all been there.

The Roomba 675 weighs 6.77lbs, same as the Roomba 677.

Another tie here as they’re the same weight.

Battery and capacity

The Roomba 677 has a runtime of 90 minutes on a full charge and a bin capacity of 300ml. The dustbin and battery size allow you to leave it alone and trust that it will deliver a good clean of your home or office. It also finds its way back to the dock to recharge after cleaning so it’s a fuss-free fully automated process. 

The Roomba 675 has a battery capacity of 1800 mAh. This means that the Roomba 675’s battery will be able to deliver a consistent current of 1800 mAh for about 90 minutes. The general understanding is that a higher mAh number would mean a longer running time for devices.

Both vacuums will clean non-stop for around 90 minutes for a normal sized house. Unless you have a big apartment or home, or if you have a lot of dirty areas to clean, this runtime is generally sufficient for your cleaning needs.

Once the battery runs down to its limit, they both return to the docking station to recharge for about 2-3 hours back to a full charge and will be ready for its next cleaning session.

It’s a tie again.


Both the Roomba 675 and 677 uses an Aerovac HEPA-style filter that not only traps dust and dirt but also eliminates up to 95% of harmful allergens and reduces bad odors. This filter lasts for around 2 months of moderate use before needing to be replaced. 

You guessed it, another tie. So far no differences between the two. We’re now getting to the cleaning features and technology. Surely there must be a difference. Well, let’s find out.

Brushes, Suction & Cleaning Technology

Both the Roomba 677 and the Roomba 675 use a 3-stage system developed by iRobot that first loosens dirt from surfaces before lifting and suctioning the dirt into the Roomba’s encased bin.

iRobot Roomba 677 has a 3-stage cleaning system that loosens, lifts and suctions dirt
iRobot Roomba 677

Using an edge-sweeping brush, both the 675 and 677 can easily reach into corners and clean thoroughly along edges. The brush itself is adaptable and adjusts by itself according to the type of floor it is traveling on (hardwood floor or carpet).

iRobot Roomba 677 Cleans well on both hardwood floors and carpet
iRobot Roomba 677

In conjunction with the strong motor, brush rollers effectively enable both units to take on even the toughest cleaning jobs, from small particles to larger pieces of debris.

iRobot Roomba 675 patented Dual Brush Rollers is great for Carpets
Patented Dual Brush Design

A 600 Pa motor is used in both units for suction power. No leader so far.

iRobot’s Dirt Detect Technology is one of the core features of the Roomba 675 and 677. The units automatically determine the level of dirt and dust in your home and will repeatedly clean areas that are heavily soiled more. The Roomba will know that it hasn’t picked up all the dirt in the first pass, so it will go again and again until clean.

iRobot Roomba 690 Dirt Detect Technology
Dirt Detect Technology

An auto-adjust cleaning head on both units adapts its height automatically to the environment, for example when cleaning carpets or hard floors. A side cleaning brush allows the Roomba to sweep the dirt and dust from wall edges and little corners that may otherwise not be fully cleaned

Well, no differences here either. We end up in another wash.

Navigation System

The Roomba 677 and 675 both use an array of sensors and the iAdapt navigation system to determine whether to move forward or around a particular obstacle. They both clean randomly, unlike the smarter Roomba’s in the s9 series.

iRobot Roomba 675 has cliff sensors to prevent it from dropping down stairs
Cliff Detection Sensors

They also have cliff detection sensors to tell the robot if it is moving towards a cliff. This stops it from falling down stairs or ledges.

Same navigation systems in both the 675 and 677.

App / Phone Control

If you have a solid Wi-fi connection in your home, you can access either Roomba Unit through the iRobot Home app.

iRobot Home App for Android and iOS
iRobot Home App

It only takes a few minutes to set up the app and Roomba. You’ll then be able to customize your cleaning schedule and times – in addition to controlling its basic functions. The app allows you to turn the robot on and off remotely through your smartphone app.

However, do note that both units cannot connect to 5GHz Wi-Fi networks, so make sure your Wi-Fi router is using the 2.4GHz band. Most Wi-Fi routers are automatically set to 2.4, so your home network should be ok.


Both the 677 and 675 are easy to clean. Simply press the bin release tab located on the back of the unit and remove the bin, empty its contents and place it back inside the unit.

Wow, still no differences.

Ok, here we go with the differences now that the similar features are out of the way.

Additional Features

The Roomba 677 is sold together with a Dual-mode virtual wall device. This smart device is a handy tool that has two modes to limit the areas in which the unit has access to while it is cleaning.

iRobot Roomba Virtual Wall Barrier that stops the Roomba from Entering an area
Virtual Wall Barrier

The first mode is the Virtual Wall Mode where a particular area can be blocked off in a straight line up to 10 feet in length (image above). The second is a halo mode in which a keep out zone of 4 feet in diameter can be placed around delicate objects you want to protect (picture below).

iRobot Virtual Wall Barrier devices - Halo Mode
Virtual Wall Halo Mode

For the virtual wall, you simply place the virtual wall device at one end of a doorway, point it towards the adjacent wall and the Roomba will not be able to access any point beyond that straight line. If you need to limit the Roomba’s access to a particular room or area, this is a simple and elegant solution. 

The Roomba 675 does have the Virtual Wall capability, but the Virtual Wall device does not come with the 675. The virtual wall devices are sold separately and can be easily found on Amazon like in this two-pack of the dual-mode virtual wall barriers.

Yes, that’s right! We just had our first difference! The 677 package comes with one virtual wall barrier device, while the 675 does not.

Pros and Cons 

I’m going to combine the Pros and Cons together for the 675 and 677 because they’re the same. I’ll specifically note if anything pertains to only one of the two.

Pros – Both 675 and 677 

  • Can schedule cleaning days with the iRobot Home app
  • Has Dirt Detect Technology to repeatedly clean more heavily soiled areas
  • Adjusts automatically to different cleaning surfaces – from hardwood floors to carpet and vice versa

Cons – Both 675 and 677

  • Can be considered “loud” by some during cleaning
iRobot Roomba 675 review Alexa Enabled

Who is the 675 and 677 for?

Roomba 675: For those who are more budget-conscious, but still want a powerful and efficient robot vacuum that can make your house cleaning chores much easier.

Roomba 677: For those who want an easy to use robot vacuum device that includes a virtual wall to protect valuable and delicate items around the house.

Roomba Unboxing and Review after Two Months of Use


Both the Roomba 675 and 677 models are virtually similar in terms of basic specifications, features, and connectivity.

In this matchup, I’d definitely recommend the Roomba 675 – it is less expensive than the 677, but shares the same features and functions.

The only two differences between the two models are

  • 1 – The highlight color on the top of the units – the 675 is all black while the 677 has a grey highlight on the top. 
  • 2 – The Virtual Wall device that comes in the 677 package

If you’re looking for comparisons that have more differences than these two, check out one of these:

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Written by:

Michael Hoyt
Michael Hoyt, a seasoned expert in smart home technology and robot vacuum specialist, is renowned for his contributions to home automation. With a deep-seated knowledge of smart devices, he has dedicated his career to enhancing living spaces with advanced technology. Michael's expertise extends from in-depth reviews and recommendations to practical advice on fully automating homes with smart home solutions.