Air Purifier Buying Guide India 2026

A 12x15 room is 180 sq ft. You need a purifier with CADR of at least 200-250. For faster cleaning or if you have pets/smoke, go for CADR 300+. Higher CADR means the air gets cleaned more times per hour.

Yes, if they have a True HEPA filter. HEPA filters capture 99.97% of particles including pollen, dust mites, pet dander, and other allergens. Many users report significant improvement in allergy symptoms. However, purifiers work best as part of overall allergy management.

Run it 24/7 for best results. Air quality changes constantly, and purifiers work more efficiently when running continuously. Most consume only 30-60W, so the electricity cost is minimal. Use auto mode to save even more energy.

Most purifiers have filter replacement indicators. Generally, replace HEPA filters every 6-12 months. Replace sooner if you notice reduced airflow, increased noise, or if you live in a heavily polluted area. Pre-filters can be washed monthly to extend HEPA filter life.

Yes, but you need an activated carbon filter. HEPA filters catch smoke particles, but carbon filters absorb odor gases. For heavy smoke or cooking odors, look for purifiers with thick carbon filters. Some odors may require multiple air changes to completely remove.

Keep it 3 feet away from walls and furniture for proper air circulation. Place it in the area where you spend most time. For bedrooms, keep it on your side of the bed. Avoid corners, behind furniture, or near curtains that can block airflow.

Not always. Focus on key features: True HEPA, activated carbon, right CADR, and low noise. Expensive models often have smart features (Wi-Fi, apps) that are nice but not essential. A ₹15,000 purifier with good filters often works as well as a ₹30,000 smart model for basic air cleaning.