Delhi's air quality has once again become a major concern for households, with thick smog and lingering smoke from post-Diwali firecracker bursting adding to the pollution. On November 9, 2026, several monitoring stations across the capital recorded AQI levels above 400, placing them in the Severe category. With outdoor pollution remaining a concern, maintaining cleaner indoor air has become equally important. An air purifier with a good HEPA filtration system can help capture fine dust, PM2.5 particles, pollen and other airborne pollutants. If you are planning to buy one this winter, there are several options worth considering. We have shortlisted five air purifiers under ₹30,000 that offer useful filtration features and coverage for different room sizes.
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HEPA Filtration, Room Coverage and More: What Makes a Good Air Purifier?
With Delhi-NCR's AQI frequently reaching unhealthy and severe levels, choosing the right air purifier for your home is important. Here are a few key features to consider before buying one:
- HEPA Filtering: Look for an air purifier with a true HEPA filter which gets rid of tiny particles, for example, PM2.5 particulate matter, dust, and pollen.
- Room Application: Consider the size of the room that is suggested for the purifier to make sure it will work well.
- CADR: The Clean Air Delivery Rate (CADR) that is high indicates a faster cleaning process.
- Pre-Filter: Assists in preventing bigger particles like dust, hair, and lint.
- Air Quality Sensors: These sensors identify indoor pollution and change the speed of a fan in the compatible devices automatically.
- Noise Levels: Be sure to find out whether or not the device has a quiet or sleep mode if it is to be used in your sleeping quarter.
- Filter Replacement Costs: Think about the price and availability of new filters to understand what the total costs will be.
