Look for a purifier with a true HEPA filter (captures ≥99.97% of particles ≥0.3 µm) and a high CADR (Clean Air Delivery Rate) appropriate for the size of your room. For a standard bedroom (150–200 sq ft), a CADR of at least 150–200 m³/hour is recommended. Avoid ioniser or ozone-generating purifiers — ozone is itself a respiratory irritant. Dr. Thakur can provide personalised recommendations during your consultation at Pulmovista.
