iRobot Roomba i8+ Vacuum Review

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.

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.

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

• Dirtbag: You need to replace the disposable dirtbag when full. They're sold in packs of three from the manufacturer website.
• Brushrolls: You need to swap out the brushrolls every 12 months. You can buy a new set from the manufacturer here.
• Side brush: You can remove and replace the side brush every 12 months. They're sold in packs of three from the manufacturer website.
• HEPA filter: The HEPA filter needs replacing every two months. They're sold in packs of three from the manufacturer website.
• Front caster wheel: You should remove and replace the wheel every twelve months. You can purchase this part from iRobot here.

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

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.

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.

• 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

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.