Xiaomi Smart Air Purifier 4
Xiaomi
- 400 m³/h CADR
- Up to 516 sq ft
- True HEPA H13
First air purifier, second bedrooms, and anyone who wants maximum performance per rupee.
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Brand: BPL
Room air purifier, CADR 192 m³/h
Our editorial score
Good — right for the specific buyer
A small bedroom, study or home office
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.
BPL sells the BPL AP-03 for ₹9,569 on Amazon.in (MRP ₹12,000, so 20% off on the day we checked). For a air purifier, that sits comfortably below the ₹14,890 middle of the market here.
What to look at first is its CADR: 192 m³/h. A rough rule is that this cleans a room of about 180 sq ft five times an hour, which is what you want for PM2.5 in a bedroom.
Where these figures come from: the Amazon.in listing for this purifier (ASIN B074KGT1W4), read on 12 October 2026. We have not tested it ourselves, and Amazon prices move daily, so check the live price before you buy.
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 90 sq ft
It is rated for 180 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 90 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.
You live outside a metro or a major service town
BPL's service network is rated limited rather than excellent. Filter availability and callout times are what decide whether a purifier is still running in five years, and they are worth checking for your pin code before you buy.
How we score service reach →Weak transparency. This is separate from our review score above — it measures how well documented, how supportable and how expensive to own this air purifier is, scored on 4 of 7 axes by formula, with no manual override. See the methodology.
| Axis | Score | Weight | Based on |
|---|---|---|---|
| Documentation | 6.7 | 15% | 10 of 15 tracked specs published |
| Running cost | Not scored | 20% | Not published |
| 5-year cost of ownership | Not scored | 20% | Not published |
| Warranty & free service | 0.0 | 12% | 12 months warranty |
| Service & parts reach | 3.0 | 15% | BPL service network rated limited |
| Energy efficiency | 10.0 | 8% | 38.4 m³/h of clean air per watt |
| Noise | Not scored | 10% | Not published |
| Type | Room air purifier |
|---|---|
| CADR | 192 m³/h |
| Room size (from CADR) | About 180 sq ft |
| Noise | 48 dB (lowest setting, as listed) |
| Power | 5 W |
| Warranty | 1 years |
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.
BPL is a long-standing Indian electronics name whose current washing machines are budget models sold online.
Xiaomi
First air purifier, second bedrooms, and anyone who wants maximum performance per rupee.
View details
Levoit
Bedrooms and nurseries where noise matters more than raw coverage.
View details
Philips
The best-value bedroom air purifier for most Indian households.
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Honeywell
A bedroom or a single closed room
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