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Comparing 2 robot vacuums

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

  1. ×
    • Highest score
    AirDoctor 3500

    € 467bol.com

    4.7 Best on 1 fact
  2. ×
    • Best on the most facts
    Blueair Blue Signature Large

    On the market since June 2025

    No price today

    not in our ranking Best on 2 facts

Prices updated on 28 October 2026

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Side by side

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

AirDoctor 3500 × Best on 1 fact Blueair Blue Signature Large × Best on 2 facts
The facts that decide most
Lowest price € 467bol.com –
Score 4.7 not in our ranking
Clean air delivery rate (CADR) higher is better 578 m³/h 773 m³/h best
Room size we compare on higher is better 48 m² 64 m² best
HEPA filter class True HEPA HEPA-type
Filter life longer is better 12 months best 9 months
Noise at the lowest speed not judged 39 dB 23 dB
Noise at the highest speed not judged 59 dB 55 dB
Tests, rank and ratings
Rank rank 14 of 20 for open-plan spaces –
Customer rating – –
Running cost
Electricity a year lower is better – € 61 a year
Smart features and warranty
App control None Wi-Fi
Matter same on both no (assumed) no (assumed)
Voice assistants – Alexa
Cleaning performance
CADR measured to The maker's own test DOE test
CADR for smoke 578 m³/h 773 m³/h
Room size the maker claims 59 m² 65 m²
CADR for dust – 737 m³/h
CADR for pollen – 765 m³/h
CADR for fine particles (PM2.5) – 754 m³/h
Filter
Filter layout Separate filters One combined filter
Activated carbon filter same on both yes yes
Filter parts 2 1
Replacement filter part number – 112973
Running costs
Carbon filter life 6 months –
Energy use a year – 235 kWh
Noise and power
Power at the highest speed 110 W 42 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
Height 58.4 cm 43.7 cm
Width 400 mm 393.7 mm
Depth 210 mm 393.7 mm
Weight 8.2 kg 6 kg
Shape – Floor box
Extras
Ioniser Can be switched off None
CARB certified – yes
Ozone produced – 3 ppb
Warranty and certification
Warranty 2 years 1 year
Maker model numbers AD3500 –
AHAM Verifide certified – yes

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.

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

Air purifier market report, September 2026 No prices yet, but 1 new model.

Frequently asked questions

What does a good air purifier cost in the Netherlands?

The models in our ranking run from about € 71 to € 535 today. We show the lowest verified price of the day per model, VAT and delivery included.

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.

How often do you update the prices?

Every day, at every shop we follow. We read the prices from the shops’ own product feeds and web shops. We check them for errors and keep them, so every product page shows what a price did over the last 90 days. We only call a discount real when the price also sits below the level of the preceding 30 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. Per shop: how and how often

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 →

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