Comparing 2 robot vacuums
Your shortlist side by side: today’s price, our score and every fact the maker states.
Green is the best of these 2, also when they share the lead.
Drag a model by its header to move its column, or use the arrows.
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|---|---|---|
| Most important facts | ||
| The lowest price today at a shop that delivers to you, delivery included. A price with an asterisk comes from a shop abroad, and its delivery cost is our own estimate. Lowest price | 184 €Saturn best | 252 €Saturn |
| Our own score out of 10: 60% measured facts and 40% shop ratings. Price does not count. Score | best | |
| The average of the stars buyers give at the shops, with the number of reviews behind it. We only compare it from 20 reviews. Customer rating | ★ 4.5 · 6 reviews | ★ 4.8 · 5 reviews |
| How much clean air the purifier delivers an hour, measured with smoke, dust and pollen. A higher figure cleans a bigger room or the same room faster. In this comparisonWhen it matters
When it matters less
Source
| 390 m³/h best | 330 m³/h |
| The room size where the purifier changes the air 4.8 times an hour under a 2.5 m ceiling, worked out from its CADR. We use it so every model is compared on the same rule. In this comparisonWhen it matters
When it matters less
Source
| 33 m² best | 28 m² |
| How fine the filter is. True HEPA and H13 catch at least 99.97% of particles at 0.3 microns. HEPA-type is a weaker claim with no test behind it. When it matters
When it matters less
Source
| H13 HEPA | H13 HEPA |
| How long the maker says a filter lasts, in months of normal use. A filter that is spent cleans less. When it matters
When it matters less
Source
| 12 months | – |
| The sound level at the lowest speed, as the maker measures it. In this comparisonWhen it matters
When it matters less
Source
| 27 dB | 21 dB |
| The sound level at the highest speed, as the maker measures it. In this comparisonWhen it matters
When it matters less
Source
| 51 dB | 50 dB |
| Rank | ||
| Where the model stands in our ranking, among the purifiers for the same size of room. Rank | rank 8 of 23 for large rooms | rank 5 of 23 for large rooms |
| Smart features and warranty | ||
| Whether you can control the purifier from a phone app, over wifi or only nearby over Bluetooth. When it matters
When it matters less
Source
| None (assumed) | Wi-Fi |
| Which voice assistants the robot works with, such as Google Assistant or Alexa. When it matters
When it matters less
Source
| none (assumed) | Alexa, Google Assistant |
| Matter is the standard that lets devices from different makers work together. With it you can run the robot outside the maker’s own app. When it matters
When it matters less
Source
| no (assumed) | no (assumed) |
| Whether the purifier 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. When it matters
When it matters less
Source
| none (assumed) | – |
| Cleaning performance | ||
| The test the CADR comes from. AHAM AC-1 and the DOE test are independent and comparable. A maker's own test is not. Source
| Not stated | GB/T 18801 (Chinese standard) |
| The room size the maker states. Makers use different rules, so we show it but never rank on it. In this comparisonSource
| 99 m² | 110 m² |
| The CADR measured with dust. Source
| – | 330 m³/h |
| Filter | ||
| Whether the particle and carbon layers are one filter or separate ones. Separate filters let you replace only the part that is spent. When it matters
When it matters less
Source
| Separate filters | One combined filter |
| A filter of activated carbon that takes out smells and some gases. It does not catch particles. When it matters
When it matters less
Source
| yes | yes |
| How many filters the purifier holds, each a part to replace. Source
| 2 | – |
| Replacement filter part number | Filter A | – |
| A coarse mesh in front of the main filter that catches hair and fluff. A separate washable one is rinsed under the tap, which keeps the expensive filter from clogging early. When it matters
When it matters less
Source
| Washable, separate | Washable, separate |
| The maker says the housing is sealed, so the air cannot slip past the filter through gaps around it. When it matters
When it matters less
Source
| no (assumed) | no (assumed) |
| The purifier reads a chip or code in the filter and works only with the maker's own, so a cheaper filter from another brand will not do. When it matters
When it matters less
Source
| no (assumed) | no (assumed) |
| How the purifier tells you the filter is due. A timer counts the hours it has run, a sensor judges the filter itself, an estimate weighs the hours against the air it cleaned, and a plain indicator is one the maker does not explain. When it matters
When it matters less
Source
| Filter change indicator | – |
| The maker says the filter is treated to stop bacteria or mould growing on it. It changes nothing about what the filter catches. When it matters
When it matters less
Source
| no (assumed) | – |
| Running costs | ||
| How long the carbon filter lasts before it needs replacing, as its maker states it. Where it is a separate part, it is bought on its own schedule. When it matters
When it matters less
Source
| 3 months | – |
| Noise and power | ||
| The power the purifier draws at its highest speed. In this comparisonSource
| 70 W | 42 W |
| How many speeds you can choose by hand, the automatic mode not counted. When it matters
When it matters less
Source
| 4 | – |
| Air quality sensing | ||
| What the unit itself shows of the air it measures: a figure, such as the PM2.5 level, or only a coloured light. When it matters
When it matters less
Source
| Colour light | – |
| The fan speed follows the air quality the sensor reads. When it matters
When it matters less
Source
| yes | yes |
| The settings the maker names besides plain fan speeds, such as a quiet sleep mode or a timer. When it matters
When it matters less
Source
| Sleep, Timer | Sleep, Turbo, Pollen |
| A sensor that dims the lights and display when the room goes dark. When it matters
When it matters less
Source
| yes | no (assumed) |
| What the purifier measures in the air. A particle sensor lets it speed up and slow down by itself. When it matters
When it matters less
Source
| – | PM2.5, PM10, VOC, Carbon monoxide, Temperature, Humidity |
| Build | ||
| Locks the buttons, so a child or a pet cannot change the settings or switch it off. When it matters
When it matters less
Source
| no (assumed) | – |
| A remote in the box, for changing the speed without getting up or opening an app. When it matters
When it matters less
Source
| no (assumed) | – |
| How tall the purifier is. It decides whether it fits on a shelf or under a window sill. In this comparisonWhen it matters
When it matters less
Source
| 60 cm | 57.5 cm |
| How wide the purifier is. With its depth it decides how much floor it takes up. In this comparisonWhen it matters
When it matters less
Source
| 380 mm | 280 mm |
| How deep the purifier is, front to back. In this comparisonSource
| 208 mm | 317 mm |
| What the purifier weighs. It counts most if you move it from room to room. In this comparisonWhen it matters
When it matters less
Source
| 7 kg | 6.9 kg |
| Extras | ||
| An ioniser charges particles so they stick to walls and furniture instead of the filter, and some come loose again later. Some also make ozone, which irritates the airways and can turn scents in the room into formaldehyde. That is why a switch to turn it off matters. When it matters
When it matters less
Source
| Can be switched off | – |
| What the purifier does beside its filter: UV-C light, photocatalytic oxidation, plasma, a bipolar ion generator or electrostatic plates. Some of these can make ozone or other by-products, and none replaces a good filter. When it matters
When it matters less
Source
| Plasma | – |
| Warranty and certification | ||
| The warranty the maker gives in Germany. Consumer law here stands apart from it and can last longer. In this comparisonWhen it matters
When it matters less
Source
| 2 years | 2 years |
| Maker model numbers | AZBU330-HWE | HHP50CA 011 |
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.