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Blueair Blue Signature Medium vs. MORENTO HY4866 compared

Air Purifier

At a glance

The key numbers for both devices side by side.

Overall rating
75Gut
74Solide
Value for money
62Fair
76Fair
Best price
€299.00
€103.93
Price advantage
—
€195.07 cheaper
Offers
1 shop
1 shop
Rank in category
Rank 25 of 54
Rank 27 of 54

Rating

Sub-ratings compared

Blueair Blue Signature MediumOverall rating 75MORENTO HY4866Overall rating 74
CleaningperformanceNoise levelAutomode & sensorsRunningcosts & consumptionEaseof use & build quality
Blueair Blue Signature MediumMORENTO HY4866
Cleaning performance84/10080/100
Noise level68/10077/100
Auto mode & sensors68/10066/100
Running costs & consumption70/10061/100
Ease of use & build quality74/10076/100
Cleaning performance
84
80
Noise level
68
77
Auto mode & sensors
68
66
Running costs & consumption
70
61
Ease of use & build quality
74
76

Specs

Specs compared

Key specs

Model
Blue Signature Medium
HY4866
CADR particlesClean air delivered per hour for particles according to the manufacturer in m³/h – the most important performance figure; the room size is calculated from it
545.4 m³/h
300 m³/h
Room size up toCalculated from the CADR: CADR ÷ 12.5, rounded to whole m² (five air changes per hour at a 2.5 m ceiling height) – this makes all units comparable, as manufacturer figures often assume only one air change; leave blank if there is no CADR
44 m² (474 sq ft)
24 m² (258 sq ft)
Filter classClass of the main filter per EN 1822 according to the manufacturer (ISO 29463: ISO 35 H = H13, ISO 45 H = H14) – H13 and H14 retain fine dust and pollen almost completely; “True HEPA” or “HEPA-type” without a class counts as “HEPA, no class stated”
HEPA, no class stated
H13 (HEPA)
Noise level at lowest settingNoise at the lowest setting (night mode) according to the manufacturer in dB – important for the bedroom
19 dB
24 dB

Filters & air

Filter change everyReplacement interval of the main filter according to the manufacturer in months
12 months
Activated carbon filterAccording to the manufacturer, an activated carbon filter traps odors and gases – important for cooking fumes, smoke and pets
Yes
Yes
SensorsWhich air values the unit measures according to the manufacturer – with a sensor, it adjusts itself in auto mode; leave blank if there is no sensor
Gases (VOC)
PM2.5 particles
Air quality indicatorHow the unit shows the measured air quality according to the manufacturer – as a color ring or with a reading (e.g. PM2.5) on the display
Reading on display
Reading on display
IonizerIon, plasma or “active oxygen” technology according to the manufacturer – it can produce ozone, so being able to switch it off is better
Ionizer cannot be turned off
No ionizer
UV sterilizationUV-C lamp inside the unit for sterilization according to the manufacturer
No
No
360° air intakeAccording to the manufacturer, draws in air from all sides – the unit can stand freely in the room instead of against the wall
No
Filter change indicatorAccording to the manufacturer, indicates when the filter needs to be replaced
Yes
Yes

Consumption & noise

Noise level at highest settingNoise at the highest setting according to the manufacturer in dB – this is where the unit reaches its CADR
54 dB
52 dB
Power consumptionPower consumption at the highest setting according to the manufacturer in W
36 W
Standby consumptionPower consumption in standby according to the manufacturer in W – usually slightly higher with Wi-Fi
0.96 W

Controls & comfort

Fan speedsNumber of manually adjustable fan speeds according to the manufacturer, excluding auto and night mode
4 levels
4 levels
Night modeDedicated night mode according to the manufacturer: quietest setting, dimmed or switched-off display
Yes
Yes
Display shut-offAccording to the manufacturer, the display and lights can be dimmed or switched off completely – important in the bedroom
Yes
Yes
Timer up toLongest timer setting according to the manufacturer in hours
8 hours
Child lockButton lock according to the manufacturer
Yes
Yes
Remote controlRemote control included according to the manufacturer
No
Smart homeWhat the unit can be controlled with according to the manufacturer – leave blank if there is no app
Manufacturer appAlexaGoogle Assistant

Features & dimensions

WeightWeight according to the manufacturer in kg – important if the unit moves between rooms
4.3 kg (9.5 lb)
3.62 kg (8 lb)
Dimensions (W × D × H)Width × depth × height according to the manufacturer in cm – e.g. “27 × 27 × 52 cm”
29.7 × 29.7 × 49 cm (12 × 12 × 19 in)
33.5 × 19.4 × 44.5 cm (13 × 7.6 × 18 in)

General

Warranty
1 years
Price segment
Premium
Budget
Model year
2025
In the box
Luftreiniger, Vorfilter in Standardfarbe
Luftreiniger, 2× HEPA-H13-Filter mit Aktivkohle, Netzteil, 2× Bedienungsanleitung, Quick-Start-Guide, Aufkleber

Prices

Offers

Blueair Blue Signature Medium

MORENTO HY4866

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Verdict

Pros & cons

Der Blueair Blue Signature Medium ist ein Luftreiniger und Beistelltisch zugleich. Mit 545 m³/h CADR reinigt er Wohnzimmer von 25 bis 35 m² zügig und braucht dabei nur 36 W. Der Haken: Der Ionisator lässt sich nicht abschalten, und die leiseste Stufe ist lauter als die angegebenen 19 dB. Für ein kleines Schlafzimmer zahlst du für Leistung, die du dort nicht brauchst.

Pros

  • 545 m³/h CADR reichen für Wohnzimmer von 25 bis 35 m² mit Reserve
  • Dient mit glatter Deckplatte als Beistelltisch neben Sofa oder Sessel
  • Sparsam: rund 110 kWh im Jahr bei acht Stunden Volllast täglich
  • Filterwechsel ohne Werkzeug in wenigen Minuten
  • App mit Zeitplänen, Luftwerte-Verlauf, Alexa und Google Assistant
  • Mit 4,3 kg leicht von Raum zu Raum zu tragen

Cons

  • Ionisator weder am Gerät noch per App abschaltbar
  • Leiseste Stufe deutlich lauter als die angegebenen 19 dB
  • Ersatzfilterring ist der größte laufende Kostenfaktor
  • Matte Deckplatte bekommt schon früh feine Kratzer
  • Clip am neuen Filterring schließt nur fummelig

Der MORENTO HY4866 ist ein flacher Budget-Luftreiniger mit zwei H13-Filtern, der Räume bis etwa 24 m² schnell von Partikeln befreit: Sein Sensor zeigte nach sechs Minuten 94 % weniger Feinstaub an. Für Pollen- und Tierhaarallergiker im Schlafzimmer taugt er, nachts läuft er mit 24 dB und dunklem Display. Der Haken: gegen Rauch und Tabakgeruch zu schwach, und die Ersatzfilter sind teuer.

Pros

  • Senkt den angezeigten Feinstaubwert in sechs Minuten um 94 %
  • 300 m³/h CADR, ausreichend für Räume bis etwa 24 m²
  • Schlafmodus mit 24 dB und komplett abgeschalteten Lichtern
  • Höchste Stufe mit 52 dB vergleichsweise leise
  • Einfache Bedienung über sechs selbsterklärende Touchfelder
  • Erkennt Küchen- und Grilldunst fast sofort

Cons

  • Dünne Aktivkohle hilft kaum gegen Tabak- und Ofenrauch
  • Sensor übersieht feinen Kaminrauch und meldet zu optimistisch
  • Ersatzfilter teuer, immer als Paar zu kaufen
  • Keine seitliche Ansaugung, an Wand oder Ecke deutlich schwächer
  • App der WLAN-Version verliert Verbindung und braucht ein Konto

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