Kärcher AF 20
Not sold at any shop we monitor today, so not in our ranking.
Which robot is right for your home? Find out in 7 questions →
Before you buy, compare it with 2 recommended alternatives
No shop here sells this model today, so beside it the highest-scored model for the same room size that one does, and the cheapest of the top 10.
Green is the best of these 3, also when they share the lead.
| This model Kärcher AF 20 Best on 1 fact | Cheapest of the top 10 Xiaomi Smart Air Purifier 4 Compact Best on 1 fact | Highest score here AEG APO50371DG Best on 1 fact | |
|---|---|---|---|
| Price and ranking | |||
| Lowest price | – | 189 €OTTO best | 386 €EURONICS |
| Score | best | ||
| Rank | – | rank 3 of 3 for medium rooms | rank 1 of 3 for medium rooms |
| Customer rating | – | – | – |
| Room size | |||
| Room size same on all | medium roomsup to 20 m² | medium roomsup to 27 m² | medium roomsup to 17 m² |
| Size, noise and age | |||
| Height lower is better | 34.6 cm best | 35.5 cm | 40.5 cm |
| On the market since | October 2022 | September 2022 | – |
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.
Kärcher AF 20 specifications
The numbers that matter first, then every fact by group. As published by the maker or the shop we read it from.
Kärcher · on the market since October 2022
Consumables: The filter lasts about 12 months.
Cleaning performance 4 facts
- Clean air delivery rate (CADR)
How much clean air the purifier delivers an hour, measured with smoke, dust and pollen. A higher figure cleans a bigger room or the same room faster.
- 220 m³/h
- CADR measured to
The test the CADR comes from. AHAM AC-1 and the DOE test are independent and comparable. A maker's own test is not.
- Not stated
- Room size we compare on
The room size where the purifier changes the air 4.8 times an hour under a 2.5 m ceiling, worked out from its CADR. We use it so every model is compared on the same rule.
- 18 m²
- Room size the maker claims
The room size the maker states. Makers use different rules, so we show it but never rank on it.
- 20 m²
Filter 4 facts
- HEPA filter class
How fine the filter is. True HEPA and H13 catch at least 99.97% of particles at 0.3 microns. HEPA-type is a weaker claim with no test behind it.
- H13 HEPA
- Filter layout
Whether the particle and carbon layers are one filter or separate ones. Separate filters let you replace only the part that is spent.
- One combined filter
- Activated carbon filter
A filter of activated carbon that takes out smells and some gases. It does not catch particles.
- yes
- Replacement filter part number
- 2.863-056.0
Running costs 1 fact
- Filter life
How long the maker says a filter lasts, in months of normal use. A filter that is spent cleans less.
- 12 months
Noise and power 3 facts
- Noise at the lowest speed
The sound level at the lowest speed, as the maker measures it.
- 26 dB
- Noise at the highest speed
The sound level at the highest speed, as the maker measures it.
- 52 dB
- Power at the highest speed
The power the purifier draws at its highest speed.
- 24 W
Air quality sensing 3 facts
- Air quality sensors
What the purifier measures in the air. A particle sensor lets it speed up and slow down by itself.
- PM2.5
- Particle sensor
- Laser
- Automatic mode
The fan speed follows the air quality the sensor reads.
- yes
Smart features and warranty 1 fact
- Matter
Matter is the standard that lets devices from different makers work together. With it you can run the robot outside the maker’s own app. On this model: Assumed, not a stated fact: the maker's full specification does not name it, so we take it as no.
- no (assumed)
Build 5 facts
- Shape
- Tabletop
- Height
How tall the purifier is. It decides whether it fits on a shelf or under a window sill.
- 34.6 cm
- Width
- 220 mm
- Depth
- 220 mm
- Weight
What the purifier weighs. It counts most if you move it from room to room.
- 3 kg
Warranty and certification 1 fact
- Maker model numbers
- 1.024-820.0
Sources: Manual · karcher.com
Our score
Confidence: medium. A CADR the maker states itself, or fewer than 300 owners’ ratings. The highest score today is 7.4.
-
Owners’ ratings 40%–
Owners’ ratings, 40%: none yet at the shops that deliver to Germany, so this part is left out and the score is the features part alone.
-
Features 60%5.7
34 of 60 points for the maker’s and the registers’ facts.
- Price never countsA sale can’t lift a model. Today’s lowest price sits beside the score, checked every morning.
- No CADR, no rankOnly air purifiers with a known CADR are ranked. The rest get a provisional score.
- Reviewers beside, not insideReviewers’ picks are shown next to the score and do not count in it.
Frequently asked questions about the Kärcher AF 20
What size of room is the Kärcher AF 20 for?
The Kärcher AF 20 is sized for a room of about 18 m², the room size we compare it on. Its clean air delivery rate (CADR) is 220 m³/h.
How often does the Kärcher AF 20 need a new filter?
The maker gives the filter a life of 12 months.
How loud is the Kärcher AF 20?
The maker states 26 dB at the lowest speed and 52 dB at the highest.
