HEPA Filter is using for filtration but it will be useless when it use without any system.
HEPA Filtraiton needs air circulation system so it will work as sterilization system.
TO be remember HEPA filter has lifetime to used in these system so it cant worn out.
The estimation of lifetime is a year. We can provide you the system for low budget that help you prevent from the COVID-19.
Its our concern to helps your home free from virus and infectious diseases.
Thats why HEPA filter is used for operation room, sterilization production and clean room.
We hope we can help you provide good health and healthy environment.