Brand: Kärcher
Room air purifier, H13 HEPA, CADR 220 m³/h
Our editorial score
Good — right for the specific buyer
A bedroom or a mid-sized living room
Catalogue listing — not a hands-on review
We have not tested this unit. The specifications below are parsed from the manufacturer's own listing, the features are their wording, and the score is calculated from those specifications rather than assigned by an editor. For models we have examined in depth, see our ranked air purifiers guides.
Kärcher sells the Kärcher AF 20 for ₹9,999 on Amazon.in (MRP ₹39,999, so 75% off on the day we checked). That is well under the ₹14,890 typical for a air purifier in this catalogue.
What to look at first is its CADR: 220 m³/h. A rough rule is that this cleans a room of about 430 sq ft five times an hour, which is what you want for PM2.5 in a bedroom. The listing's own claim of 430 sq ft is more generous than its CADR supports, so size by the CADR.
This is a catalogue entry, not a hands-on review. Every number above is taken from Kärcher's Amazon.in listing (ASIN B0BJ663D77) as it stood on 12 October 2026, and the score is worked out from those numbers alone.
Every condition below is derived from this product's published specifications and from how it compares with the air purifiers we track — so you can check each one against your own room, supply or budget rather than take our word for it.
Your room is bigger than about 215 sq ft
It is rated for 430 sq ft, but that assumes roughly one air change an hour. For visible results in Indian winter conditions, halve it — which puts the realistic ceiling near 215 sq ft.
Work out the CADR you need →You are trying to remove smells, smoke or gases
No meaningful activated-carbon stage is fitted. HEPA captures particulate and does nothing whatsoever for gases and odours — this is the most common mismatch in the category.
Purifiers with real carbon filtration →You want to verify it is working rather than trust it
There is no numeric PM2.5 readout. A colour ring cannot tell you the room went from 180 to 22 µg/m³, and it cannot tell you the filter is exhausted.
| Type | Room air purifier |
|---|---|
| Filter | H13 HEPA + activated carbon |
| CADR | 220 m³/h |
| Rated room size | Up to 430 sq ft |
| Power | 24 W |
Specifications are from manufacturer literature and were checked at the last price-verification date. Brands occasionally revise stage counts, tank sizes and warranty terms without changing the model name — confirm against the current listing before purchasing.
The wet-and-dry benchmark, and the only brand in this category whose Indian consumer products are a genuine extension of professional equipment rather than a separate budget line. The WD range is the reference: a WD 3 will pick up 15 litres of water, blow a driveway clear, survive being dropped down basement stairs and still be serviceable in year seven, because Kärcher sells the filters, hoses and drums as spares rather than treating the unit as disposable. What it is not is a household dry vacuum — the WD range is loud, industrial-looking and overkill for daily dusting.
Xiaomi
First air purifier, second bedrooms, and anyone who wants maximum performance per rupee.
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Levoit
Bedrooms and nurseries where noise matters more than raw coverage.
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Philips
The best-value bedroom air purifier for most Indian households.
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Havells
Smaller cities where Xiaomi and Levoit service is unavailable but you still want real HEPA.
View detailsFree consultation · Pan-India
Tell us your city, your water source and your budget. For homes we will recommend the right technology — including telling you when a ₹3,000 purifier is genuinely enough. For offices, societies and factories, our team will size a system against your water report and send a specification-backed quotation.
Or email betterworkindia@gmail.com — attach a water analysis report and we can quote faster.
Homes
Right-sized recommendation for your TDS, not the most expensive unit
Offices & societies
25 LPH to 2,000+ LPH, sized on headcount and feed water
Industry
Pharma, food, textile, boiler feed — engineered to your specification
Service & AMC
Installation, repair and AMC with written response times