Description
600 m³/h CADR. A Room Cleaned in 5 Minutes.
4-Layer HEPA to 0.003 Microns · As Quiet as 15 dB.
Serious purification power for spaces up to 700 sq ft · removes 99.97% of airborne particles as small as 0.003 microns including dust, allergens, pet dander, smoke and bacteria · drops to 15 dB in sleep mode for bedrooms and nurseries · monitor and control it from your phone through the Air+ app · works with Google Assistant and Amazon Alexa · RoHS certified
CADR is the only air purifier number that genuinely matters — it's the volume of clean air actually delivered per hour, and it's what determines whether the machine cleans your room or merely hums in the corner of it. Six hundred cubic metres an hour is a serious figure: enough to clean a standard-sized room in around five minutes, and enough to cover a space up to 700 sq ft rather than a bedroom alone. In a Delhi winter, when the AQI leads the news and the windows stay shut for weeks, that speed is the difference between air that improves noticeably within minutes of switching on and air that never quite catches up.
4-Layer HEPA filtration — down to 0.003 microns
Most purifiers are rated at 0.3 microns. This captures 99.97% of airborne particles as small as 0.003 microns — a hundred times smaller. That distinction matters enormously in Delhi, because the particulate that does real damage isn't the visible dust: it's ultrafine matter from vehicle exhaust, construction and crop burning, small enough to pass deep into the lungs and into the bloodstream. Four layers of filtration handle the full range — dust and larger particles first, then allergens and pet dander, smoke, bacteria and certain viruses. For households with children, elderly parents, asthma or allergies, this is the specification worth paying attention to.
15 dB — quiet enough that you'll actually leave it running
The commonest reason an air purifier stops working is that someone switches it off at night because of the noise. At 15 dB in sleep mode, this is below the level of a whisper — quieter than the rustle of a page turning, and genuinely inaudible from a bed. That means it keeps purifying through the eight hours you spend breathing the same room air, which is precisely when it matters most. Ideal for bedrooms, nurseries and workspaces, where the alternative is a machine that only runs when nobody's trying to sleep.
🌫️ What the four layers capture
Dust & Particles
The Delhi dust that settles daily on every surface in the house
Allergens & Pet Dander
The triggers behind seasonal sneezing, itching and disturbed sleep
Smoke & Ultrafine
Particulate from exhaust, construction and burning — down to 0.003 microns
Bacteria & Viruses
Airborne bacteria and certain viruses removed from circulating air
📱 Smart control, from anywhere
Live Air Quality
Track indoor air quality in real time through the Air+ app
Remote Fan Control
Adjust speed from your phone — have the room clean before you get home
Scheduling
Set cleaning schedules so it runs when you want it to, automatically
Voice Control
Google Assistant and Amazon Alexa — hands-free from across the room
✨ Design & build
RoHS certification means the product is free from hazardous substances — a reasonable thing to expect from an appliance whose entire job is improving what you breathe.
Enough reach for an open-plan living and dining area, a large drawing room or a home office — not just a single bedroom, which is where most purifiers at this price stop.
A soft rounded profile in premium grey with gentle ambient lighting — it reads as a considered object in a modern living room rather than a piece of medical equipment in the corner.
Allergy and asthma sufferers, homes with pets or newborns, and anyone living with Delhi NCR's winter air — the combination of high CADR and ultrafine filtration is what those households actually need.
Designed to run continuously without a meaningful impact on your bill — which matters, because a purifier only works while it's switched on, and this one is built to stay on.
| Brand / Model | Philips AC4221/61 ✅ |
| Type | Air Purifier ✅ |
| Clean Air Delivery Rate | 600 m³/h ✅ |
| Filtration | 4-Layer HEPA ✅ |
| Particle Removal | 99.97% of particles as small as 0.003 microns ✅ |
| Removes | Dust · allergens · pet dander · smoke · bacteria · certain viruses ✅ |
| Coverage Area | Up to 700 sq ft ✅ |
| Noise Level | 15 dB minimum · 51.5 dB maximum ✅ |
| Control Method | Air+ app + touch controls ✅ |
| Voice Control | Google Assistant · Amazon Alexa ✅ |
| App Features | Real-time air quality monitoring · fan speed control · scheduling ✅ |
| Power Source | Corded electric ✅ |
| Dimensions (D × W × H) | 28.5 × 28.5 × 52 cm ✅ |
| Weight | 6.3 kg ✅ |
| Colour | Grey ✅ |
| Certification | RoHS compliant ✅ |
| Warranty | Philips Manufacturer Warranty ✅ |
Why buy from Mahajan Electronics?
- Expert guidance & dedicated after-sales support
- 45+ years of trusted retail excellence
- 24-hour delivery across Delhi NCR
- GST invoice — save up to 18% on business purchases
- 100% genuine Philips with manufacturer warranty
- Raja Garden · Jail Road · Dabri Mor
Purify smart. Breathe clean. Order today.
Philips AC4221/61 · 600 m³/h CADR · 4-Layer HEPA to 0.003 Microns · 700 sq ft Coverage · 15 dB Sleep Mode · Air+ App · Alexa & Google
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Please Note: The image shown is for reference purposes only. Actual product details, including the serial number and manufacturing date, may vary.
