bestatbestThe best product at the best price

↑ ↓ move↵ openEsc close

Comparison · 2 models

Comparing 2 robot vacuums

Your shortlist side by side: today’s price, our score and every fact the maker states.

  1. ×
    Blueair Blue Signature Large

    On the market since June 2025

    No price today

    not in our ranking
  2. ×
    • Highest score
    • Best on the most facts
    AEG APO50371DG

    386 €EURONICS

    7.4 Best on 1 fact

Prices updated at 08:46

+ Add a robot (up to 10) Clear

Side by side

Green is the best of these 2, also when they share the lead.

Blueair Blue Signature Large × AEG APO50371DG × Best on 1 fact
Price and ranking
Lowest price – 386 €EURONICS
Score not in our ranking 7.4
Rank – rank 1 of 3 for medium rooms
Customer rating – –
Room size
Room size open-plan spacesup to 65 m² medium roomsup to 17 m²
Size, noise and age
Height lower is better 43.7 cm 40.5 cm best
On the market since June 2025 –
Smart features and warranty
App control same on both Wi-Fi Wi-Fi
Matter no (assumed) –
Cleaning performance
Clean air delivery rate (CADR) 773 m³/h 206 m³/h
CADR measured to DOE test Not stated
CADR for smoke 773 m³/h 206 m³/h
CADR for dust 737 m³/h 236 m³/h
CADR for pollen 765 m³/h 247 m³/h
CADR for fine particles (PM2.5) 754 m³/h –
Room size we compare on 64 m² 17 m²
Room size the maker claims 65 m² 17 m²
Filter
HEPA filter class HEPA-type H13 HEPA
Filter layout One combined filter –
Activated carbon filter same on both yes yes
Running costs
Filter life 12 months –
Energy use a year 235 kWh –
Noise and power
Noise at the lowest speed 23 dB 19 dB
Noise at the highest speed 55 dB 49 dB
Power at the highest speed 42 W 25 W
Energy efficiency (IEF) 11.1 cfm/W –
ENERGY STAR certified yes –
Air quality sensing
Automatic mode same on both yes yes
Air quality sensors – PM1, PM2.5, PM10
Build
Shape same on both Floor box Floor box
Width 393.7 mm 234 mm
Depth 393.7 mm 234 mm
Weight 6 kg 3.5 kg
Extras
Ioniser None –
CARB certified yes –
Ozone produced 3 ppb –
Warranty and certification
AHAM Verifide certified yes –
Warranty 1 year –

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.

The score is out of 10: 60% measured facts and 40% shop ratings. A model is ranked only when its CADR is known. Method. Models whose CADR we do not hold yet, so they are not in our ranking. We do track their prices.

AllergiesHay fever or pollen
×
Room size
Price
Colour
EcosystemsSmartThings
×
Sort
Room size
Pets
Customer rating
Discount
Number of reviews
Clear all filters 1 of 35 models

Lowest price at every shop that delivers to Germany, VAT and delivery included. * = delivery cost and VAT estimated for a foreign shop.

Robot vacuum market report, September 2026 A median price of – and 0 new models.

Frequently asked questions

How big an air purifier do I need?

Match it to the size of the room. Each model in the ranking is grouped by the room size its maker states, and the lists keep a model out when it states none. A common rule of thumb is a clean air delivery rate (CADR) in m³/h of at least 12 times the room’s floor area in m², for a ceiling of 2.4 metres.

What is the difference between HEPA H13 and True HEPA?

Both are high-efficiency filters. True HEPA is the American name for a filter that catches 99.97% of particles of 0.3 micrometres, and H13 is the European class for 99.95%. We read the class the maker states and do not treat a filter called HEPA-type or HEPA-like as either.

Can an air purifier make ozone?

Some can, mostly models with an ioniser or a plasma feature. California limits ozone from indoor air cleaners to 50 parts per billion, and the CARB certification shows a model meets that limit. Our asthma filter leaves out models whose ioniser cannot be switched off.

Where we check prices

We read prices every day at most shops, from their product feed or web shop. We check them for errors and keep them, so you can see what a price did over the last 90 days. We link to Amazon too, but show no Amazon price until we read it through Amazon’s own API. Until then the price is on Amazon itself.

Whose tests we use

Beside each model we also show where these testers place it in their own lists, without counting it in the score:

How we combine measured facts and owners’ ratings into one score is on the method page.

Looking for a bargain? The air purifiers with a real price drop today →

Looking for something new? The air purifiers launched in the past year →

We keep your report and the address of this page, not your name, email address or IP address.