Is rising pollution pushing you to buy an air purifier? Check these 5 things first

Rising pollution is pushing many households to consider air purifiers, but choosing the right one needs careful thought. Here’s what to check before buying.

A rising number of people across India are turning to air purifiers as pollution spikes and indoor spaces become harder to manage. Many homes now rely on these machines to keep the air cleaner, especially when someone struggles with dust allergies or breathing issues. As more buyers look for reliable devices, understanding what to check before bringing one home becomes important.

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By MD Ijaj Khan

Ijaj Khan is a technology journalist and Senior Content Producer at Hindustan Times, with over three years of experience covering the consumer technology industry. His work spans smartphones, laptops, wearables, gaming, appliances and AI - from hands-on reviews, comparison and buying guides to breaking news and in-depth features that help readers cut through the noise and make informed decisions. Before joining HT Tech, he worked with Jagran New Media, where he sharpened his instincts for fast-paced digital reporting. He holds a Post Graduate Diploma in English Journalism and Mass Communication from the Indian Institute of Mass Communication (IIMC), Delhi. Whether he's testing the latest flagship smartphone, tracking a major AI announcement, or putting a gaming laptop through its paces, Ijaj approaches every story with the same goal - making technology feel relevant and easy to understand for everyday users, not just enthusiasts. When he's not in front of a screen for work, he's usually travelling to a new city, hunting for great food, or keeping tabs on what's next in tech before everyone else catches on.

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Here are five key factors to keep in mind before bringing one home.

1. Check for a HEPA filter

A HEPA (High-Efficiency Particulate Air) filter remains the most important part of an air purifier. It traps tiny particles around 0.3 microns, including dust, pollen and certain microbes. Many devices come with basic filters, but you should confirm whether the model is HEPA-certified. This helps ensure that the purifier can remove fine pollutants that affect daily breathing.

2. Look for odour control

Some air purifiers can also remove odours, a feature often overlooked. These models usually rely on carbon filters that absorb smells from cooking, smoke or damp corners. If you want this function, remember that carbon filters generally cost more. However, they help maintain fresh indoor air and can be useful in compact or enclosed spaces.

3. Check for an air quality sensor

Air purifiers deliver the best results when they run for long hours. This makes noise levels an important factor, especially at night or during work hours. Manufacturers publish noise ratings, but the sound can vary in real use. Testing a few models at a store helps you choose a device that works quietly while still filtering effectively.

5. Check for a filter life indicator

Filters wear out over time and lose efficiency as dust builds up. A filter life indicator helps you track when it needs replacement by checking the airflow and pressure inside the device. Replacing filters on time ensures the purifier works as intended. Ignoring this step reduces its impact and may only push air around without cleaning it.