iRobot Roomba Plus 4020 Combo
No shop we follow delivers this model to the Netherlands. This page says what it can do, and which similar robots you can buy here.
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Before you buy, compare it with 2 recommended alternatives
No shop here sells this model today, so beside it the highest-scored model with the same kind of station that one does, and the cheapest of the top 10.
Green is the best of these 3, also when they share the lead.
| This model iRobot Roomba Plus 4020 Combo | Cheapest of the top 10 Ecovacs Deebot T90 Pro Omni Best on 4 facts | Highest score here Narwal Freo 20 Best on 4 facts | |
|---|---|---|---|
| Price and ranking | |||
| Lowest price | – | € 357 *Amazon.de best | € 873 *Amazon.fr |
| Score | not in our ranking | best | |
| Rank | – | rank 11 of 53 with an all-in-one station | rank 1 of 53 with an all-in-one station |
| Customer rating | – | ★ 4.2 · 998 reviews | ★ 4.8 · 97 reviews best |
| Mopping | |||
| Mop type | spinning pads | roller mop | roller mop |
| Mop lift on carpet higher is better | 7 mm | 15 mm best | 10 mm |
| Automatic mop detach | – | no | no |
| Washes the mop same on all | yes | yes | yes |
| Hot-air drying | – | yes | yes |
| Station | |||
| Station same on all | all-in-one station | all-in-one station | all-in-one station |
| Dust bag lasts longer is better | up to 75 days | up to 150 days best | up to 120 days |
| Plumbing hookup | – | no | – |
| Brush and obstacles | |||
| Anti-tangle brush | – | yes | yes |
| Obstacle avoidance | – | AI camera | AI camera |
| Climbs thresholds up to higher is better | 16 mm | 24 mm | 40 mm best |
| Climbing system for high thresholds | – | no | no |
| Size, noise and age | |||
| Robot height lower is better | 10.7 cm | 9.5 cm best | 9.5 cm best |
| Noise not judged | – | 60 dB | – |
| On the market since | – | March 2026 | June 2026 |
Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews. * Foreign shop: delivery cost and VAT to the Netherlands estimated.
iRobot Roomba Plus 4020 Combo specifications
The numbers that matter first, then every fact by group. As published by the maker or the shop we read it from.
Consumables: a 2.5 l dust bag in the station, which lasts up to 75 days.
Dimensionsrobot and dock
From the published dimensions. The dock needs a spot 32 cm wide and 45 cm deep.
Suction and brushes 2 facts
- Suction power
Suction in pascal, as the maker measures it. More pascal helps on carpet, but it says little about how well the robot picks grit off a hard floor.
- 7,000 Pa
- Carpet detection
The robot notices when it drives onto a carpet. Most then raise their suction, and a mopping robot lifts its mop or leaves it at the dock.
- detects carpet and boosts suction
Mopping 2 facts
- Mop type
How the mop is built: flat pads, two spinning discs or a roller. Discs press harder on dried-on dirt, a roller rinses itself while it works.
- spinning pads
- Mop lift on carpet
How far the robot lifts the mop when it drives onto a carpet. From about 10 mm a medium pile stays dry.
- 7 mm
Dock 7 facts
- Empties the dust bin
The dock empties the robot’s dust bin, usually after every run. You only empty the dock’s bag or bin.
- yes
- Bagless
The dock collects dust in a bin instead of a disposable bag. No bags to buy, but you empty it yourself.
- no
- Dust bag capacity
How much the dust bag in the dock holds.
- 2.5 l
- Dust bag lasts
How long the maker says a dust bag lasts with daily use. With pets or a lot of carpet it is shorter.
- up to 75 days
- Washes the mop
The dock washes the mop for you, so you do not rinse it by hand.
- yes
- Dries the mop
The dock dries the mop afterwards, so it does not sit there wet and start to smell.
- yes
- Dock size (w × d × h)
The width, depth and height of the dock. Measure the spot you have in mind, and leave room for the lid and for the robot driving in.
- 31.5 × 45 × 47.2 cm
Navigation and obstacles 3 facts
- Navigation
How the robot maps your home and follows that map. Lidar measures with a laser and works in the dark, a camera looks along and recognises more.
- LiDAR turret
- Climbs thresholds up to
The highest threshold the robot takes, as the maker states it. Measure your own: the step into a bathroom or onto a balcony is often higher.
- 16 mm
- Multi-floor maps
How many floor plans the robot keeps. With more than one it knows which floor it is on when you carry it up or down the stairs.
- 4
Robot 3 facts
- Robot height
How tall the robot is. It decides whether it fits under your sofa, bed or cabinet.
- 10.7 cm
- Robot weight
What the robot weighs. It counts most if you carry it up a staircase every day.
- 4.11 kg
- Dust bin in the robot
How much dust the robot holds before you empty it. It matters less with an auto-empty dock, which empties the bin after every run.
- 295 ml
Battery 1 fact
- Runtime per charge
How long the robot cleans on one charge, at its quietest setting. After that it recharges and carries on where it stopped.
- 120 min
Smart features and warranty 2 facts
- Voice assistants
Which voice assistants the robot works with, such as Google Assistant or Alexa.
- Alexa, Google Assistant, Siri
- Home Assistant
Whether the robot works with Home Assistant, the home automation software you run yourself. Official means the integration comes with Home Assistant itself, community that volunteers maintain it.
- official integration
Sources: vacuumwars.com · irobot.com · home-assistant.io
Frequently asked questions about the iRobot Roomba Plus 4020 Combo
Does the iRobot Roomba Plus 4020 Combo empty its own dust bin?
Yes. The station empties the robot’s dust bin after every run. The 2.5 l dust bag in the station lasts up to 75 days, the maker says.
Does the iRobot Roomba Plus 4020 Combo wash and dry its own mop?
Yes. The station washes the mop itself. It then dries the mop.
Does the iRobot Roomba Plus 4020 Combo work with Alexa, Google Home or Siri?
It works with Alexa, Google Assistant and Siri. Home Assistant has an official integration for this model.
How high a threshold can the iRobot Roomba Plus 4020 Combo climb?
Thresholds up to 16 mm, the maker says. Measure your own thresholds: the ones to a bathroom or balcony are often higher.
Does the iRobot Roomba Plus 4020 Combo fit under low furniture?
The robot is 10.7 cm tall, so it fits under furniture with at least 11 cm of clearance.
How long does the iRobot Roomba Plus 4020 Combo run on one charge?
120 minutes on its quietest setting.