The engine's answer
Best air purifier in a bedroom for allergies and dust
Coway
AirMega 150 Professional
96% match · ₹14,500
Whisper-quiet with a 7-year filter warranty — a sleeper hit for allergies.
The numbers that decided it
- Clean air delivery
- 303 m³/h
- Room coverage
- 33 m²
- Quietest setting
- 22 dB
- Filter
- Green True HEPA
Why it wins
Coway AirMega 150 Professional scores 96% for allergies and dust in a bedroom. It is rated for 33 m² against roughly 15 m² of room, moves 303 m³/h of clean air through a Green True HEPA filter, runs at 22 dB on its lowest setting and lists at ₹14,500.
Replacement filters are mid-priced.
What came close
- Sharp FP-J40M Plasmacluster96%Plasmacluster ions tame pet odours and allergens gently. · ₹10,999
- Xiaomi Smart Air Purifier 490%The best-value smart purifier — big CADR, tiny filter costs, great app. · ₹13,999
- Xiaomi Smart Air Purifier 4 Pro90%Covers a large living room without breaking the bank. · ₹19,999
What the runners-up gave up
- Sharp FP-J40M Plasmacluster (96%) moves 240 m³/h of clean air against the winner's 303 m³/h.
- Xiaomi Smart Air Purifier 4 (90%) runs at 32 dB at its quietest, against 22 dB.
- Xiaomi Smart Air Purifier 4 Pro (90%) runs at 33 dB at its quietest, against 22 dB.
Questions people ask
- Is the Coway AirMega 150 Professional big enough for a bedroom?
- Yes. It is rated for 33 m² and a bedroom is about 15 m², so it has 2.2× the headroom.
- How loud is it at night?
- 22 dB on its lowest setting — quieter than a whisper.
- What does it cost to run?
- Replacement filters are mid-priced.
Change an assumption
This page answers one household's question. Yours is not that question — run the quiz and the whole shortlist re-ranks around your room, your water and your budget.
Answer for your own home