Air Purifier Buying Checklist for India | indoorair.guide

Eight-step independent checklist for buying an air purifier in India. Each step uses a Yes/No/Avoid verdict so you can score any model against the same criteria — CADR, HEPA grade, activated carbon, noise, filter cost, sensors, smart features, and ozone safety.

• CADR sized to 5 ACH plus a 20–30% buffer for Indian conditions
• HEPA grade — H13 minimum, glass-fibre preferred over electrostatic
• Activated carbon mass in grams (not just "carbon layer")
• Noise floor on lowest fan speed (target ≤30 dB for bedrooms)
• Annual filter cost and Indian service-centre availability
• Explicit warning against ozone-generating tech (ionisers, plasma, UV-C)