India, Nov. 7 -- Delhi-NCR residents often turn to air purifiers when winter pollution makes outdoor activities difficult. But buying one without understanding its filtration capacity, room coverage and maintenance costs can lead to wasted money. A high price tag or a long list of smart features does not automatically mean better protection.

The right air purifier should match the size of your room and the type of pollution you want to reduce. Fine particulate matter, smoke, dust and harmful gases require different filtration methods. Even a powerful machine may struggle if its filters are unsuitable, its capacity is too low, or you do not replace its filters on time.

With pollution becoming a recurring winter concern across major India...