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iRobot Roomba i8+ Vacuum Review

Tested using Methodology v1.1
Reviewed Nov 02, 2022 at 10:18 am
iRobot Roomba i8+ Picture
7.6
Bare Floor
7.1
Low-Pile Carpet
6.7
High-Pile Carpet
5.3
Pets
6.1
Stairs
5.1
Cars
4.5
Workshop
Vacuum Type
Robot
Bagless
No
Cordless
Yes
Anti-Allergy Filter (HEPA)
Yes
Wet Compatible
No

The iRobot Roomba i8+ is a self-emptying robot vacuum and a Costco-exclusive variant of the iRobot Roomba i7. The vacuums are very similar in design and performance, though the i8+ comes with a virtual barrier device, an additional HEPA filter and dirtbag, and uses a higher-capacity battery that yields a longer overall runtime.

Our Verdict

7.6 Bare Floor

The iRobot Roomba i8+ is good for bare floors. It easily clears away pet hair as well as small and bulky debris on this floor type. It also does an excellent job of maneuvering itself around obstacles and packs a wide array of automation features, including its self-emptying capability and barrier device, which lets you set up no-go zones without using its companion app. Unfortunately, its low real-world suction means it struggles to clear away debris in cracks and crevices.

Pros
  • Great maneuverability.
  • Self-emptying capability.
  • Great performance on bare floors.
  • Easy to maintain.
Cons
  • No mopping capability.
  • Low real-world suction performance.
  • High recurring costs.
7.1 Low-Pile Carpet

The iRobot Roomba i8+ is decent for low-pile carpet. It struggles with pet hair and fine debris on this surface type, but does a little better when clearing away larger debris. Its self-emptying function reduces hands-on maintenance requirements, and the vacuum feels quite well-built. It also does a great job of maneuvering itself and can climb over lightweight rugs without too much trouble.

Pros
  • Great maneuverability.
  • Self-emptying capability.
  • Automatic height adjustment.
  • Easy to maintain.
Cons
  • Middling performance on low-pile carpet.
  • Struggles with pet hair on low-pile carpet.
  • High recurring costs.
  • Can get stuck on rug tassels.
6.7 High-Pile Carpet

The iRobot Roomba i8+ is an okay option for high-pile carpet. It can clean up pet hair and larger debris without too much trouble but struggles with clearing away fine material embedded in high-pile carpet fibers, in part due to its low real-world suction performance. Thankfully, its surface detection system enables it to raise its cleaning head when it maneuvers onto uneven surfaces.

Pros
  • Great maneuverability.
  • Self-emptying capability.
  • Automatic height adjustment.
  • Easy to maintain.
Cons
  • Struggles with fine debris on high-pile carpet.
  • Low real-world suction performance.
  • High recurring costs.
  • Can get stuck on rug tassels.
5.3 Pets

The iRobot Roomba i8+ is pretty effective for dealing with pet hair on floors, though it isn't intended to clear away pet hair on furniture or in other tight spots. It excels when clearing away pet hair on bare floors and high-pile carpet but has a slightly harder time dealing with it on low-pile carpet. Its high-efficiency filter is effective in helping seal in allergens like pet dander, and its twin rubber brushrolls are easy to clean. Unfortunately, pet hair can get trapped at the entry point to its dirt compartment.

Pros
  • Good air filtration performance.
  • Easy to maintain.
Cons
  • No mopping capability.
  • Struggles with pet hair on low-pile carpet.
  • Pet hair gets stuck at entry point to dirt compartment.
6.1 Stairs

The iRobot Roomba i8+ is a robot vacuum and isn't designed to clean stairs.

5.1 Cars

The iRobot Roomba i8+ isn't designed to clean the inside of your car.

4.5 Workshop

The iRobot Roomba i8+ isn't designed for workshop cleaning.

  • 7.6 Bare Floor
  • 7.1 Low-Pile Carpet
  • 6.7 High-Pile Carpet
  • 5.3 Pets
  • 6.1 Stairs
  • 5.1 Cars
  • 4.5 Workshop
  1. Updated Nov 02, 2022: Review published.
  2. Updated Oct 27, 2022: Early access published.

Check Price

Medium Silver Roomba i8+
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Differences Between Sizes And Variants

The iRobot Roomba i8+ is only available in one color variant: 'Black/Silver'. You can see the label for our test unit here.

Let us know in the discussions if you come across another variant of this vacuum, and we'll update our review.

Compared To Other Vacuums

The iRobot Roomba i8+ differs little from the iRobot Roomba i7 but ultimately represents a slightly better deal overall thanks to the added bundled accessories, which include an additional dirtbag for its base station, an extra high-efficiency filter, and a virtual barrier device. Its maneuverability is excellent, though it lacks the hazard-avoidance function found on the newer iRobot Roomba j7+.

If you're looking for an alternative, look at our list of recommendations of the best robot vacuums, the best robot vacuums for hardwood floors, and the best robot vacuums for carpet.

iRobot Roomba i7

While both vacuums are almost identical, the iRobot Roomba i8+ ultimately represents a better deal than the iRobot Roomba i7. The i8+ comes with an additional dirtbag for its self-emptying station, an extra high-efficiency filter, and a virtual barrier device that you can use to set up no-go zones without opening the vacuum's companion app. The i8+ also uses a higher-capacity battery that yields a longer runtime; however, it does take a little longer to recharge.

iRobot Roomba j7

The iRobot Roomba j7+ has a more advanced set of automation features than the iRobot Roomba i8+. Not only does the j7+ share the i8+'s self-emptying capability, but it can also identify and react to hazards like pet waste in real-time. It also feels better built. However, the i8+ delivers better overall debris pickup performance across a range of surfaces.

iRobot Roomba i3

The iRobot Roomba i8+ is better than the iRobot Roomba i3+ EVO. The i8+ has a longer overall battery life, delivers superior performance on bare floors as well as carpets, and does a better job of maneuvering itself.

Roborock Q5

The iRobot Roomba i8+ and Roborock Q5 each have advantages. The iRobot feels better made, has easier-to-clean brushrolls, uses higher-capacity dirtbags for its base station, and comes bundled with two extra filters and two extra dirtbags. It also does a better job of sealing in fine allergens and charges a lot faster. However, the Roborock has a much longer overall battery life, delivers notably superior debris pickup performance on bare floors, and has a more comprehensive suite of automation functions in its app, like being able to control the vacuum manually using the 'Pin n Go' function. The Roborock's LIDAR sensor also allows for superior maneuverability in the dark.

Test Results

perceptual testing image
Design
8.0
Design
Build Quality
Vacuum Type
Robot

The iRobot Roomba i8+ feels impressively well-built, with a body made mainly from high-grade plastic and dense rubber wheels. It feels very similar in construction to other iRobot models, but most like the iRobot Roomba i7.

No assembly is required after taking the vacuum out of its box, with one dirtbag already being installed in its base station. However, you will have to pair the vacuum with the station.

7.5
Design
User Maintenance

The iRobot i8+ has a couple of parts that need periodic cleaning, but they're easy to access.

  • Dirtbag: You can simply access the disposable dirtbag inside the base station by opening its top lid and lifting it out. A seal cover falls in place once the bag is lifted out, preventing any dust from escaping. There's an indicator light that changes from white to red to let you know when to replace the bag or if there's a blockage.
  • Dirt compartment: The vacuum's internal dustbin can be easily slid free from the back of the vacuum after pressing the release button. You can wash this part with water and wipe it with a dry cloth or tap it against your garbage bin to dislodge dirt. You should clean this part after every use.
  • Brushrolls: You can easily access the brushrolls by removing the brush guard under the vacuum. Since there are no bristles to get in the way, it's pretty easy to remove any tangled hair by using your hands or scissors. It can be hard to get the brushroll to fit back into place once removed, though. You should clean this part once a month or twice a month if you have pets.
  • Side brush: You need a screwdriver to remove the side brush. You should clean it by removing tangled hairs once a month or twice a month if you have pets.
  • Filter: The filter is inside the vacuum's dirt compartment. You can tap it against your garbage bin to remove any debris stuck to it once a week, or twice a week if you have pets. Note that you can't wash this part.
  • Wheel: You can pull the wheel out of its cavity and push it out of the socket to dislodge any hair or debris stuck to it. You should clean this part every two weeks.
  • Sensors: You should clean the vacuum's sensors once a month with a dry cloth.

Any part that's washed in water should dry for 24 hours before use again.

3.0
Design
Recurring Cost
Bag Part Number 4640235
Filter Part Number 4639161
HEPA Filter Part Number 4639161

Like the i7+ variant of the iRobot Roomba i7, this vacuum incurs somewhat high recurring costs.

iRobot sells a 'Replenishment Kit' that contains three side brushes, a new pair of multi-floor rubber brushrolls, and three HEPA filters.

8.5
Design
Storing
Height
19.09" (48.5 cm)
Width
13.39" (34.0 cm)
Depth
16.54" (42.0 cm)
Cord Storing
Not Needed
On-Board Tool Storage
Not needed
Vacuum Rack/Station
Yes

The iRobot i8+ is pretty easy to store. Its base station is taller but slightly narrower than other self-emptying robot vacuums like the yeedi vac station, making it a little easier to fit in a nook between furniture. You can wrap up any excess length of power cord behind the vacuum.

8.2
Design
Dirt Compartment
Bagless
No
Volume
0.70 gal (2.65 L)
Full Indicator
Yes
Bag Included
4

The iRobot Roomba i8+ can hold an impressive amount of debris. The manufacturer advertises that the base station dirtbags can hold 30 dustbins worth of debris. In the real world, its capacity works out to just under 2.4L, which is similar to the capacity of full-size canister vacuums like the Miele Complete C3 and comfortably exceeds the size of the Shark EZ Robot Self-Empty's external dirt compartment. An indicator light on the station lets you know when the bag is full or if there's an obstruction in the tunnel leading toward the bag. The app can notify you when the dirt compartment or bag is full.

Design
In The Box

  • iRobot Roomba i8+ robot vacuum
  • Charging dock/bag emptying station
  • Charging cable
  • 'Dual Mode Virtual Wall Barrier' device
  • 3x HEPA filter
  • 2x multi-surface rubber brushrolls
  • 2x side brush (one already attached to the vacuum)
  • Dirt compartments
  • 4x dirtbags
  • User guide

10
Design
Range
Cordless
Yes
Cord Length
N/A
Hose Length
N/A
Minimum Wand Length
N/A
Maximum Wand Length
N/A
Total Range
N/A

The iRobot i8+'s range is limited only by its remaining battery life. That said, it can't climb or descend stairs.

9.0
Design
Portability
Total Weight
7.47 lbs (3.39 kg)
Weight In Hand
0.00 lbs (0.00 kg)
Carrying handle
Yes

The iRobot Roomba i8+ is extremely portable. While it's on the heavier side for a robot vacuum, it has an integrated carrying handle to make it easier to bring it to another room or floor.

9.3
Design
Battery
Minimum Battery Life
110 min
Maximum Battery Life
110 min
Recharge Time
99 min
Recharge Dock
Yes
Battery Life Indicator
Yes
Removable Batteries
Yes

The iRobot Roomba i8+ has superb battery performance. iRobot's claim of its battery offering 20% additional capacity over the unit in the iRobot Roomba i7 bears out in the real world, as the latter can only run for about 75 minutes. However, this vacuum does take longer to recharge than the i7. You can keep an eye on the vacuum's current charge level by monitoring the indicator light around the 'Clean' touch-sensitive button, which switches from solid white to solid red as the charge level drops.

Design
Quality Of Life Features
Rotating Head
No
Power Adjustment
No
Self-Propelled
Yes
Headlights
No
Easy On/Off
Yes
Head Surface Type Adjustment
Only Automatic

The iRobot i8+ has a few extra convenience features. Its surface detection system allows it to adjust the height of its cleaning head to match the floor type that it's on. It can also focus on cleaning areas with a higher concentration of debris. However, you can't adjust any of these parameters manually.

Design
Tools And Brushes
Brushroll
Yes
Brushroll On/Off
No
Removable Brushroll
Yes
Turbo Brush
No
Crevice Tool
No
Upholstery Tool
No
Soft Bristle Brush
No
Hard Bristle Brush
No
Extension Wand
No
Ceiling Fan Tool
No
Pet Grooming Tool
No

The iRobot Roomba i8+ has a single side brush that moves debris from the outside edges of the vacuum into the path of its main brushroll.

Design
Alternative Configuration
Blower Mode
No
Performance
8.1
Performance
Bare Floor Performance (Hardwood, Laminate, Tiles)
Setting Used "Clean"
Large Debris at 0 gal (0L) 91%
Large Debris at 0.07 gal (0.25L) 91%
Large Debris at 0.2 gal (0.75L) 91%
Large Debris at 0.4 gal (1.5L) 91%
Large Debris at 0.8 gal (3L) N/A
Large Debris at 1.6 gal (6L) N/A
Small Debris at 0 gal (0L) 97%
Small Debris at 0.07 gal (0.25L) 97%
Small Debris at 0.2 gal (0.75L) 97%
Small Debris at 0.4 gal (1.5L) 97%
Small Debris at 0.8 gal (3L) N/A
Small Debris at 1.6 gal (6L) N/A

The iRobot Roomba i8+ delivers great performance on bare floors. It easily clears away small debris like rice and the majority of bulkier debris like cereal.

Note: All testing was completed when the dirt compartment was empty, with the data for the 0.25L, 0.75L, and 1.5L tests being copied from the 0L test. Since this vacuum automatically empties its internal dirt compartment when docked, it doesn't lose suction performance as its internal dustbin fills up.

5.8
Performance
Low-Pile Carpet Performance
Setting Used "Clean"
Large Debris at 0 gal (0L) 72%
Large Debris at 0.07 gal (0.25L) 72%
Large Debris at 0.2 gal (0.75L) 72%
Large Debris at 0.4 gal (1.5L) 72%
Large Debris at 0.8 gal (3L) N/A
Large Debris at 1.6 gal (6L) N/A
Small Debris at 0 gal (0L) 27%
Small Debris at 0.07 gal (0.25L) 27%
Small Debris at 0.2 gal (0.75L) 27%
Small Debris at 0.4 gal (1.5L) 27%
Small Debris at 0.8 gal (3L) N/A
Small Debris at 1.6 gal (6L) N/A

The iRobot Roomba i8+ delivers middling performance on low-pile carpet. It really struggles with clearing away fine material like baking soda, though it does a decent job when it comes to dealing with larger debris like sand.

Note: All testing was completed when the dirt compartment was empty, with the data for the 0.25L, 0.75L, and 1.5L tests being copied from the 0L test. Since this vacuum automatically empties its internal dirt compartment when docked, it doesn't lose suction performance as its internal dustbin fills up.

6.8
Performance
High-Pile Carpet Performance
Setting Used "Clean"
Large Debris at 0 gal (0L) 67%
Large Debris at 0.07 gal (0.25L) 67%
Large Debris at 0.2 gal (0.75L) 67%
Large Debris at 0.4 gal (1.5L) 67%
Large Debris at 0.8 gal (3L) N/A
Large Debris at 1.6 gal (6L) N/A
Small Debris at 0 gal (0L) 24%
Small Debris at 0.07 gal (0.25L) 24%
Small Debris at 0.2 gal (0.75L) 24%
Small Debris at 0.4 gal (1.5L) 24%
Small Debris at 0.8 gal (3L) N/A
Small Debris at 1.6 gal (6L) N/A

The iRobot i8+'s performance on high-pile carpet is okay. It does a good job of clearing away larger debris like sand but struggles with fine debris like baking soda.

Note: All testing was completed when the dirt compartment was empty, with the data for the 0.25L, 0.75L, and 1.5L tests being copied from the 0L test. Since this vacuum automatically empties its internal dirt compartment when docked, it doesn't lose suction performance as its internal dustbin fills up.

8.2
Performance
Pet Hair Floor Performance
Bare Floor
97%
Low-Pile Carpet
67%
High-Pile Carpet
88%

The iRobot Roomba i8+'s pet hair-pickup performance is great. While it has a hard time dealing with pet hair on low-pile carpet, it easily clears it away on bare floors and high-pile carpet. However, pet hair pickup performance can be somewhat inconsistent, as this kind of debris tends to get stuck at the entry point to its dirt compartment, as seen here and here.

0
Performance
Suction
Maximum Suction
0.0 inHโ‚‚O (0.00 kPa)
Setting Used For Maximum "Clean"
Normal Suction
0.0 inHโ‚‚O (0.00 kPa)
Setting Used For Normal "Clean"
Hose Diameter
N/A

The iRobot Roomba i8's real-world suction performance is poor. Like most other robot vacuums, its suction inlet is positioned too high above the contact surface to create a tight seal, so real-world suction measurements are low.

9.3
Performance
Noise
Bare Floor
62.7 dBA
Low-Pile Carpet
60.0 dBA

The iRobot Roomba i8+ is very quiet. You won't have too much trouble hearing what people nearby are saying, even with the vacuum running nearby.

8.5
Performance
Maneuverability

The iRobot Roomba i8+ does an excellent job of maneuvering itself. It uses the same iAdapt 3.0 system as the iRobot Roomba i7, which uses optical sensors to plot a course through its coverage area. It cleans in an organized, thorough pattern. The vacuum is small enough to clean under most tables, couches, and chairs and can climb onto thicker-pile carpeting without too much trouble. However, it can drag around lightweight rugs.

0
Performance
Pet Hair Furniture Performance
Sofa Pickup Post Test
Performance
Air Quality
Anti-Allergy Filter (HEPA)
Yes

The iRobot Roomba i8+ does a great job of sealing in fine allergens thanks to its onboard high-efficiency filter.

4.5
Performance
Cracks
Wood Cracks Post Test

The iRobot Roomba i8+ does a terrible job of clearing away debris in cracks and crevices. It doesn't exert enough suction force to draw out debris from deeper crevices, and its side brush is ineffective in helping to dislodge debris.

1.0
Performance
Stains
Stain Pickup Post Test

The iRobot Roomba i8+ does a terrible job of dealing with stains. Unlike the Roborock S5 Max, there's no mopping feature to help scrub away dried-on dirt and debris on hard surfaces.

0
Performance
Water
Wet Compatible
No
Water Pickup Post Test
Automation
9.1
Automation
Physical Automation
Automatic Recharging
Yes
Automatic Bag Emptying
Yes
Pathing Algorithm
Smart
Physical Boundary Markers
Yes
Scheduled Start Buttons
No
Cycle Control Buttons
Onboard Only
Navigation Control Buttons
Return to Base Only

The iRobot Roomba i8+ has a wide array of automation features. You don't need an internet connection to use this vacuum, thanks to its physical controls. You can use the 'Dual Mode Virtual Wall Barrier' device to restrict the vacuum's movements to a specific area without having to use its companion app. It has two settings. 'Halo Mode' creates a circular no-go zone with a radius of about 12 inches from the center point of the barrier device. Meanwhile, 'Virtual Wall Mode' generates a straight barrier line, which is handy for blocking off doorways through which you don't want the vacuum to cross. Beyond that, there's also the vacuum's self-emptying capability, allowing it to transfer debris from its dustbin into an external dirtbag in its base station, reducing hands-on maintenance requirements. However, unlike the iRobot Roomba j7+, it can't identify and avoid hazards like pet waste in real time.

8.0
Automation
Companion App Automation
App Name
iRobot HOME
iOS Availability
Yes
Android Availability
Yes
Software Boundary Markers (No Go Zones)
Yes
App Scheduled Start
Yes
App Cycle Control
Yes
Navigation Control within App
No

The iRobot HOME app is great. It's very easy to use and features a broad range of animated infographics that demonstrate the vacuum's features as well as maintenance procedures. Once the vacuum's stored a map of your home, you can set dedicated cleaning times for specific rooms, direct it to clean a specific area, and create virtual barriers using the map. The app also displays battery life, and you can use it check previous cleaning jobs. A separate menu tab lets you see the replacement intervals for various parts, like its high-efficiency filter or side brush. You can also pair the vacuum with Alexa or Google Home devices, allowing you to use voice commands.

Discussions