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Dyson Purifier Hot+Cool HP1 vs. Kärcher AF 20 compared

Air Purifier

At a glance

The key numbers for both devices side by side.

Overall rating
70Solide
71Solide
Value for money
41Okay
66Fair
Best price
€477.13
€121.61
Price advantage
—
€355.52 cheaper
Offers
1 shop
1 shop
Rank in category
Rank 39 of 54
Rank 33 of 54

Rating

Sub-ratings compared

Dyson Purifier Hot+Cool HP1Overall rating 70Kärcher AF 20Overall rating 71
CleaningperformanceNoise levelAutomode & sensorsRunningcosts & consumptionEaseof use & build quality
Dyson Purifier Hot+Cool HP1Kärcher AF 20
Cleaning performance70/10066/100
Noise level76/10078/100
Auto mode & sensors61/10076/100
Running costs & consumption66/10068/100
Ease of use & build quality77/10072/100
Cleaning performance
70
66
Noise level
76
78
Auto mode & sensors
61
76
Running costs & consumption
66
68
Ease of use & build quality
77
72

Specs

Specs compared

Key specs

Brand
Dyson
Kärcher
Model
Purifier Hot+Cool HP1
AF 20
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
220 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
18 m² (194 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”
H13 (HEPA)
H13 (HEPA)
Noise level at lowest settingNoise at the lowest setting (night mode) according to the manufacturer in dB – important for the bedroom
42.6 dB
26 dB
Filter costCost of replacement filters per year at the manufacturer’s replacement interval in € – over the years often more than the purchase price
40 €/year

Filters & air

Filter change everyReplacement interval of the main filter according to the manufacturer in months
12 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
PM2.5 particlesPM10 particlesTemperature
PM2.5 particlesTemperature
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
No ionizer
UV sterilizationUV-C lamp inside the unit for sterilization according to the manufacturer
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
63 dB
52 dB
Power consumptionPower consumption at the highest setting according to the manufacturer in W
50 W
24 W
Standby consumptionPower consumption in standby according to the manufacturer in W – usually slightly higher with Wi-Fi
1 W
0.5 W

Controls & comfort

Fan speedsNumber of manually adjustable fan speeds according to the manufacturer, excluding auto and night mode
10 levels
3 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
9 hours
8 hours
Child lockButton lock according to the manufacturer
Yes
Remote controlRemote control included according to the manufacturer
Yes
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

Combination functionsAdditional functions according to the manufacturer – leave blank if it is only an air purifier
FanFan heater
WeightWeight according to the manufacturer in kg – important if the unit moves between rooms
5.26 kg (12 lb)
3 kg (6.6 lb)
Dimensions (W × D × H)Width × depth × height according to the manufacturer in cm – e.g. “27 × 27 × 52 cm”
22 × 24.8 × 77 cm (8.7 × 9.8 × 30 in)
22 × 22 × 34.6 cm (8.7 × 8.7 × 14 in)

General

Warranty
2 years
2 years
Price segment
Premium
Model year
2022
In the box
Purifier Hot+Cool HP1, magnetische Fernbedienung, HEPA-13-Filter mit Glasfasern und Aktivkohle
Luftreiniger AF 20 mit 2 eingesetzten HEPA-13-Filtern inkl. antibakterieller Aktivkohleschicht

Prices

Offers

Dyson Purifier Hot+Cool HP1

Kärcher AF 20

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Verdict

Pros & cons

Der Dyson Purifier Hot+Cool HP1 ist ein Kombigerät aus Luftreiniger, Heizlüfter und Ventilator für Räume bis etwa 20 m². Er heizt ein kaltes Zimmer in Minuten und holt Rauch zügig aus der Luft. Gerüche erkennt kein Sensor, und beim Kühlen bleibt nur Luftzug. Lohnend ist er für dich, wenn du alle drei Funktionen übers Jahr nutzt, als reiner Luftreiniger zu teuer.

Pros

  • Heizt einen Raum in fünf Minuten von 18 auf 24 °C
  • Rauch und Feinstaub sind in rund drei Minuten aus der Luft
  • Untere Stufen leise, Nachtmodus stört auch empfindliche Schläfer nicht
  • Einfache Bedienung, magnetische Fernbedienung haftet am Ring
  • Schwenkung bis 350° mit Richtungswahl in der App
  • App zeigt PM2,5, PM10 und Temperatur als Verlauf

Cons

  • Kühlt nur per Luftzug, die Raumtemperatur sinkt kaum
  • Kein Gas- oder Geruchssensor, Automatik ignoriert Kochdunst
  • Aktivkohle bindet Gerüche von Angebratenem nicht zuverlässig
  • Auf höchster Stufe 63 dB, die braucht der Ventilator zum Kühlen
  • App-Verbindung reißt zeitweise ab, Konto ist Pflicht

Der Kärcher AF 20 ist ein solider Luftreiniger für kleine Zimmer: Mit 220 m³/h reicht er realistisch für etwa 18 m², im Nachtmodus läuft er mit 26 dB und ohne Leuchtanzeigen. Für dein Schlaf- oder Kinderzimmer taugt er, für Wohnzimmer nicht. Der Haken: Gegen Rauch und Katzenklo hilft die dünne Aktivkohle kaum gegen Gerüche, und im Dauerbetrieb ist das Filterset nach rund vier Monaten fällig.

Pros

  • Nachtmodus mit 26 dB, alle Leuchtanzeigen gehen aus
  • Lasersensor regelt die Stufe nach Feinstaub, Messwert in µg/m³ im Display
  • Kompakt mit 22 x 22 cm Stellfläche und 3 kg
  • Display separat abschaltbar, Automatik läuft weiter
  • Niedriger Stromverbrauch mit 24 W
  • Kein Konto und keine App nötig, Kindersicherung per Sperrtaste

Cons

  • Aktivkohle bindet Rauch-, Katzenklo- und Gummigeruch kaum
  • Filterset hält höchstens 3000 h, im Dauerbetrieb rund vier Monate
  • Keine Fernbedienung und keine App, Stufe nur am Gerät änderbar
  • Verpackung verspricht 40 m², realistisch sind knapp 18 m²
  • Display nicht entspiegelt und schlecht abzulesen

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