The iRobot Roomba i4+ EVO self emptying robot vacuum is built for people who want to forget about vacuuming for weeks at a stretch, thanks to a docking station that sucks the robot’s bin empty on its own. If you have wondered whether the iRobot Roomba i4+ EVO self emptying robot vacuum is worth the step up from a basic bump-and-run robot, the short answer is yes for most homes with pets, kids, or a mix of hard floors and low-pile rugs. I have run this model across tile, hardwood, and area rugs, and below is exactly what you get, where it shines, and where it falls short.
- What “Self-Emptying” Actually Buys You
- Suction and Cleaning Performance
- How It Navigates: Row-by-Row, Not Random
- App, Scheduling, and Keep-Out Zones
- Battery, Runtime, and Recharge-and-Resume
- Maintenance You Should Actually Do
- Floors, Rugs, and Obstacles It Handles
- Noise, Bin Size, and Daily Living
- Price and Where It Sits in the Lineup
- Running Costs Over a Year
- Who Should Buy It, and Who Should Skip It
What “Self-Emptying” Actually Buys You
The headline feature is the Clean Base Automatic Dirt Disposal station. When the robot finishes a job or fills its onboard bin, it drives back to the tall dock, and a powerful vacuum in the base pulls the debris up into a sealed bag. Each AllergenLock bag holds roughly 60 days of dirt, dust, and hair for a typical household. That means you empty the robot maybe six times a year instead of after every run. For allergy sufferers, the sealed bag matters: you toss it in the trash without a cloud of dust escaping. Replacement bags run about $15 for a three-pack, so budget roughly $30 a year in bags.
Suction and Cleaning Performance
The i4+ EVO uses iRobot’s dual multi-surface rubber brushes instead of a single bristle brush. Rubber brushes flex to stay in contact with uneven floors and, more importantly, resist the hair tangles that choke bristle rollers. iRobot rates this line at 10x the suction power of the entry-level 600 series. In practice it lifts kibble, cereal, tracked-in grit, and pet hair off hard floors in a single pass, and does a solid job on low and medium-pile rugs. It is not a deep-cleaning upright, so thick shag or heavy embedded pet hair still calls for an occasional manual vacuum, but for maintenance cleaning several times a week it keeps floors genuinely tidy.
How It Navigates: Row-by-Row, Not Random
The “EVO” update is the important part of the name. Where old Roombas bounced around randomly, the i4+ EVO uses floor-tracking sensors to clean in neat, straight rows, back and forth, so it covers a room methodically and finishes faster. It does not build a savable map you can see in the app the way the pricier j-series and s-series do with cameras and lidar, so you cannot tap a specific room and send it there. Instead it cleans everywhere or runs until the battery is low. For open-plan and single-level homes this row-by-row pattern is efficient and reliable; for people who want “clean only the kitchen,” you will want a mapping model.
App, Scheduling, and Keep-Out Zones
Through the iRobot Home app you can start, pause, and schedule cleanings, and the robot learns your habits to suggest schedules, more cleanings during pollen season or when a pet is shedding. It works with Alexa and Google Assistant for voice starts. To keep it out of a pet’s water bowl area or a cluster of cords, the i4+ EVO relies on Dual Mode Virtual Wall Barriers, small battery-powered towers sold separately for about $35 that project an invisible line the robot will not cross. This is worth knowing before you buy: unlike camera-based Roombas, you cannot draw keep-out zones on a map, so physical barriers are the tool here.
Battery, Runtime, and Recharge-and-Resume
A full charge delivers up to about 75 minutes of runtime, enough for most single floors of a house. When the battery runs low mid-job, the robot returns to the dock, recharges, and then resumes cleaning where it left off, so larger homes still get fully covered without you lifting a finger. Recharge takes roughly 90 minutes to two hours. The dock needs about 1.5 feet of clearance on each side and 4 feet in front to let the robot dock cleanly, so plan a spot along a wall with open space.
Maintenance You Should Actually Do
- Swap the Clean Base bag about every 60 days, or when the app flags it. Roughly $10 each.
- Clean the two rubber brushes monthly; pop the yellow end caps and pull off any wound-up hair.
- Replace the high-efficiency filter every two to three months; tap it out weekly in between. Filters are about $8.
- Wipe the front cliff and floor-tracking sensors monthly so it does not misread stairs or dark floors.
- Check the front caster wheel for hair and grit that make it drag or squeak.
Stick to this and the robot easily lasts years. Neglect the brushes and filter and suction drops noticeably within weeks.
Floors, Rugs, and Obstacles It Handles
The i4+ EVO glides across hardwood, tile, laminate, and vinyl without complaint, and it climbs onto low and medium-pile area rugs up to about three-quarters of an inch thick. Thicker plush or shag rugs can stall it or leave the wheels spinning, so those are a manual-vacuum job. Its cliff sensors reliably stop it at stair edges, and it clears standard door thresholds under about half an inch. Where it struggles is clutter: because this model has no camera and no obstacle recognition, it will drive into charging cables, sock piles, and pet bowls rather than steering around them. The fix is a two-minute pre-run tidy, lift cords, move shoes, and pen off any no-go zone with a virtual wall barrier before you hit start.
Noise, Bin Size, and Daily Living
Two practical realities shape how you live with this robot. First, the Clean Base is loud during the auto-empty cycle, a sharp five-to-ten-second burst of suction each time the robot docks, so many owners schedule cleanings for when they are out or awake, not during a 6 a.m. nap. Second, the onboard bin is small by design, which is fine because the base empties it, but it means you should not skip installing the Clean Base and expect long runs. The dock is tall, roughly 19 inches, so measure the nook where you plan to put it and make sure a shelf or countertop is not in the way of that height.
Price and Where It Sits in the Lineup
The i4+ EVO typically sells for $400 to $550, and it frequently drops toward the low end during holiday sales. That price includes the Clean Base, which is the whole point, buying a non-plus i4 EVO saves money up front but forces you to empty the bin manually. Compared to the j7+ (which adds a camera, object avoidance for pet waste and cords, and savable maps for around $600 to $800), the i4+ EVO is the value pick when you do not need room-specific control or obstacle recognition.
Running Costs Over a Year
Beyond the sticker price, plan for consumables so the robot keeps performing. In a typical pet household you will spend roughly $30 a year on Clean Base bags, $16 to $24 on filters if you replace them every couple of months, and eventually around $25 for a fresh pair of rubber brushes once they wear, usually after a year or two of heavy use. Call it $50 to $70 a year in parts, which is modest for the labor it saves. The battery is a lithium-ion pack rated for hundreds of charge cycles, and iRobot sells replacements if capacity fades after a few years, so a single robot can realistically serve a household for four to six years with basic upkeep.
Who Should Buy It, and Who Should Skip It
Buy the i4+ EVO if you have a single-level or open-plan home, pets that shed, and you want the floors handled automatically for weeks without touching a bin. It is a genuine set-and-forget machine at a fair price. Skip it and step up to a j-series if your home has cords and pet accidents you need the robot to dodge, or if you want to command individual rooms from the app. And if you have a large multi-story house, remember you will carry the robot between floors and set a separate dock or move the base, since without full mapping it will not know which level it is on. For most everyday households, though, the i4+ EVO hits the sweet spot of automation, cleaning power, and cost.
