Air purifiers are electronic devices used to purify indoor air from harmful particles such as dust, pollen, bacteria, viruses, mold, smoke and bad odors. They provide a healthy breathing environment especially for allergy sufferers, asthma sufferers and those who spend long periods of time in closed spaces. Air quality is increased by using different filtration systems such as HEPA filter, carbon filter and UV light. They are used in various areas such as homes, offices, hospitals and schools. They are becoming widespread in modern living spaces with their silent operation, energy efficiency and automatic sensor features.