The vacuum cleaner filter is a key part of the vacuum cleaner that is designed to trap dust, dirt and allergens during the cleaning process. Different types of filters offer different levels of cleaning efficiency and particle retention. Choosing the right type of filter can be important to the cleanliness of the air in your home and the effectiveness of your vacuum cleaner in removing allergens and dirt from your floors. Some common filter types include High Efficiency filters, Microfilters, HEPA filters, Water filters and more. Each of these filters has its own benefits and uses, allowing users to choose the one that best suits their needs in cleaning and maintaining a clean environment.