Delhi air pollution: 7 things to check before buying air purifier

HEPA Filter: A true HEPA filter captures 99.97% of particles as small as 0.3 microns.

Room Coverage Area: Ensure the purifier is suitable for the size of the room. Check the Clean Air Delivery Rate (CADR) to gauge its effectiveness. Higher CADR values indicate better performance.

Look at the decibels (dB): Some models can be pretty noisy, especially with the higher fan speed. In fact, some machines come with "sleep mode" in order to be less noisy.

Energy Efficiency: Look for Energy Star-certified purifiers to save electricity bill charges. They consume less electricity without compromising their performance.

Maintenance and filter replacement:  Costs Cost and frequency of filter replacement must be taken into account. Some purifiers have washable or long-lasting filters which may have lower costs for maintenance.

Special features: Convenience and efficiency are added by air quality indicators and smart app integration, timers and auto mode in air purifiers.

Identify your first priority (for example, allergens, dust, pet dander, smoke). Choose a purifier that specifically meets those needs.