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Comparison · 2 models

Comparing 2 robot vacuums

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

  1. ×
    Levoit EverestAir-P

    On the market since June 2023

    No price today

    not in our ranking
  2. ×
    Blueair Blue Signature Large

    On the market since June 2025

    No price today

    not in our ranking

Prices updated on 18 October 2026

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Side by side

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

Levoit EverestAir-P × Blueair Blue Signature Large ×
Price and ranking
Lowest price – –
Score not in our ranking not in our ranking
Rank – –
Customer rating – –
Room size
Room size same on both open-plan spacesup to 51 m² open-plan spacesup to 65 m²
Size, noise and age
Height lower is better – 43.7 cm
On the market since June 2023 June 2025
Smart features and warranty
App control same on both Wi-Fi Wi-Fi
Voice assistants Alexa, Google Assistant –
Matter same on both no (assumed) no (assumed)
Cleaning performance
Clean air delivery rate (CADR) 601 m³/h 773 m³/h
CADR measured to AHAM AC-1 (US standard) DOE test
CADR for smoke 601 m³/h 773 m³/h
CADR for dust 634 m³/h 737 m³/h
CADR for pollen 732 m³/h 765 m³/h
CADR for fine particles (PM2.5) 617 m³/h 754 m³/h
Room size we compare on 50 m² 64 m²
Room size the maker claims 51 m² 65 m²
Air changes the maker assumes 4.8 per hour –
Filter
Activated carbon filter same on both yes yes
HEPA filter class – HEPA-type
Filter layout – One combined filter
Running costs
Filter life – 12 months
Energy use a year – 235 kWh
Noise and power
Noise at the lowest speed 24 dB 23 dB
Noise at the highest speed 56 dB 55 dB
Power at the highest speed 70 W 42 W
Energy efficiency (IEF) – 11.1 cfm/W
ENERGY STAR certified – yes
Air quality sensing
Air quality sensors PM1, PM2.5, PM10 –
Particle sensor Laser –
Automatic mode same on both yes yes
Build
Shape – Floor box
Width – 393.7 mm
Depth – 393.7 mm
Weight – 6 kg
Extras
CARB certified same on both yes yes
Ioniser – None
Ozone produced – 3 ppb
Warranty and certification
AHAM Verifide certified same on both yes yes
Warranty 2 years 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.

Room sizeOver 50 m²
×
Room size
Price
Colour
Discount20% & up
×
Sort
Allergies
Pets
Customer rating
Ecosystems
Number of reviews
Clear all filters 0 of 40 models

No model fits all these filters.

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 →

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