AIRROBO GT21
No store we follow ships this model to the United States. 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 store 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 AIRROBO GT21 | Cheapest of the top 10 Roborock Q7 M5+ Best on 1 fact | Highest score here Dreame D20 Plus Best on 4 facts | |
|---|---|---|---|
| Price and ranking | |||
| Lowest price | – | $214Amazon.com best | $309Amazon.com |
| Score | not in our ranking | best | |
| Rank | – | rank 8 of 16 with a self-emptying station | rank 1 of 16 with a self-emptying station |
| Customer rating | – | ★ 4.0 · 25,402 reviews | ★ 4.2 · 3,684 reviews best |
| Mopping | |||
| Mop type | – | flat or vibrating pad | flat or vibrating pad |
| Mop lift on carpet higher is better | – | no | – |
| Automatic mop detach | – | no | – |
| Washes the mop | – | no | no |
| Hot-air drying | – | no | – |
| Station | |||
| Station same on all | self-emptying station | self-emptying station | self-emptying station |
| Dust bag lasts longer is better | up to 60 days | up to 49 days | up to 150 days best |
| Plumbing hookup | – | no | – |
| Brush and obstacles | |||
| Anti-tangle brush | – | yes | yes |
| Climbs thresholds up to higher is better | – | 0.8 in (20 mm) | 0.8 in (20 mm) |
| Climbing system for high thresholds | – | no | – |
| Size, noise and age | |||
| Robot height lower is better | – | 3.9 in (9.9 cm) | 3.8 in (9.7 cm) best |
| Noise not judged | – | 65 dB | – |
| On the market since | – | May 2025 | – |
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.
AIRROBO GT21 specifications
The numbers that matter first, then every fact by group. As published by the maker or the store we read it from.
Consumables: a 3.5 l dust bag in the station, which lasts up to 60 days.
Suction and brushes 1 fact
- 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.
- 2,600 Pa
Mopping 1 fact
- Water tank in the robot
How much clean water the robot carries. It sets how long it mops before a refill, which a dock does by itself.
- 340 ml
Dock 3 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
- Dust bag capacity
How much the dust bag in the dock holds.
- 3.5 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 60 days
Navigation and obstacles 1 fact
- 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 recognizes more.
- LiDAR turret
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.
- 180 min
Sources: amazon.de