How to Choose the Right Air Purifier for Your Home in India

Match the purifier to your room size

An air purifier is only effective if it suits your room. A unit meant for a small bedroom will struggle in a large living room. Check the recommended coverage area (in sq. ft.) and pick one rated for a space slightly larger than your room.

Understand CADR

CADR (Clean Air Delivery Rate) tells you how quickly a purifier cleans the air — the higher the number, the faster it clears dust, smoke and pollen. For India’s high-pollution seasons, a higher CADR helps your room reach clean air faster.

Insist on a true HEPA filter

A genuine HEPA filter captures very fine particles — the PM2.5 pollution that matters most in Indian cities. Look for “True HEPA” rather than vague “HEPA-type” claims, ideally paired with an activated carbon layer for odours and gases.

Factor in filter replacement costs

The purifier is a one-time cost; filters are ongoing. Before buying, check how often filters need replacing and what they cost. A cheap unit with expensive, hard-to-find filters can cost more over time.

Mind noise and power use

Since purifiers often run for hours — including overnight — look for quiet operation and an energy-efficient, BIS-compliant unit so it doesn’t disturb sleep or inflate your electricity bill.

Useful extras

An AQI display, auto mode, and a sleep setting are genuinely helpful. Skip gimmicks and focus on filtration, coverage and running costs.

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