Air Purifiers

HEPA grades, CADR numbers, coverage area — clean-air claims examined honestly.

Air Purifiers

Air Purifier Specs, Decoded: CADR, HEPA H13 vs H14 and Room Size

How CADR is rated, H13 vs H14 HEPA, 'covers 460 sq ft' and filter life: what an air purifier's box really tells you, and how to size one for your room.

Oct 2026

Air Purifiers

Best Air Purifiers Under ₹5,000, ₹10,000 and ₹15,000 (2026)

Air purifiers compared on clean air per rupee: CADR, the room each really suits, filter costs and late-October 2026 prices. Plus why under ₹5,000 is a stretch.

Oct 2026

Air Purifiers

Do Air Purifiers Really Work? PM2.5, '99.99%' and AQI Meters, Decoded

Air purifiers do cut indoor PM2.5, if they're sized right and the room is shut. What studies in Delhi found, what '99.99%' means, and if AQI meters are worth it.

Oct 2026