Can air purifiers kill viruses?

Air purifiers are valuable tools to improve indoor air quality and reduce airborne viruses. They capture a wide range of viruses, including respiratory viruses like influenza and coronaviruses. HEPA filters physically trap viruses but require regular replacement to maintain efficiency. Some purifiers use UV-C light to inactivate viruses by damaging their DNA or RNA. Ionic purifiers reduce particle concentrations but may not directly kill viruses.