Air Purifiers for Home Face-off
Coway AirMega 350vsPhilips AC3421/13
Published: 6 November 2026Last updated: 6 November 2026
Detailed comparison to help you choose the right best air purifiers for home in india for your needs.
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AirMega 350 vs AC3421/13: Which Air Purifiers for Home Should You Buy?
Choose Coway AirMega 350 if:
- High CADR (713 m³/h) purifies large rooms and hall areas rapidly
- Captures particles down to 0.01 microns, 10x finer than standard HEPA
- Quiet 21.6 dB sleep mode with auto light-dimming sensor
Choose Philips AC3421/13 if:
- Integrated NanoCloud humidification balances dry winter air without white dust or mist
- Dual-fan layout delivers 300 m³/h CADR with low 16.5 dB noise floor
- Comprehensive AeraSense monitoring displays humidity, temperature, and AQI
Coway AirMega 350 vs Philips AC3421/13 Specs Comparison
Showing all 13 specifications
| Specification | Coway AirMega 350 | Philips AC3421/13 |
|---|---|---|
| Air Quality Monitoring | Real-time numeric AQI + 4-color LED (PM1.0, PM2.5, PM10) | Real-time AQI display & Color Ring |
| CADR | 713 m³/h | 300 m³/h |
| Coverage Area | 980 sq ft | 840 sq ft |
| Filter Life | 1 to 2 years (8,500 hrs) | Up to 9,000 hours |
| Filter Stages | 3-stage | 3-stage |
| Filter Type | Vacuumable Pre-filter, Activated Carbon, Green True HEPA | NanoProtect HEPA, Active Carbon, NanoCloud Wick |
| Filtration Efficiency | 99.999% down to 0.01 microns | 99.97% down to 0.003 microns |
| Manufacturer Origin | South Korea | India |
| Noise Level | 21.6-52 dB | 16.5 dB (sleep mode) |
| Operating Modes | Auto, Sleep, Turbo, Eco | Auto+, Purify Only, Humidify & Purify, Sleep |
| Power Consumption | 65W | Up to 43W |
| Replacement Filter Cost | ₹9,990 | ₹5,995 |
| Warranty | 5 yrs motor + 1 yr electrical (extend to 7 yrs) | 2 years |
AirMega 350 vs AC3421/13: Pros & Cons
Coway AirMega 350
Pros
- High CADR (713 m³/h) purifies large rooms and hall areas rapidly
- Captures particles down to 0.01 microns, 10x finer than standard HEPA
- Quiet 21.6 dB sleep mode with auto light-dimming sensor
- Coway's robust 7-year motor warranty
Cons
- High replacement filter cost
- Substantial cylindrical body takes up noticeable floor space
Philips AC3421/13
Pros
- Integrated NanoCloud humidification balances dry winter air without white dust or mist
- Dual-fan layout delivers 300 m³/h CADR with low 16.5 dB noise floor
- Comprehensive AeraSense monitoring displays humidity, temperature, and AQI
- Generous 3.2L water tank minimizes refill frequency
Cons
- Higher initial investment with ₹29,995 MRP
- Air CADR (300 m³/h) is moderate compared to dedicated single-function purifiers at this price
- Requires regular maintenance and descaling of the humidification wick
Full Category Comparison
Looking to compare all air purifiers for home models?
Check out our complete Best Air Purifiers for Home in India guide to see all 31 products compared side by side.
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