The first type, pre-filters, usually come in the form of foam, felt or cloth. They work to capture larger particles and debris that may clog up the vacuum cleaner motor. These filters are often washable and can usually be reused several times before needing to be replaced.
On the other hand, post-filters are designed to capture smaller particles and debris that the pre-filter may have missed. They are commonly made of HEPA (High-Efficiency Particulate Air) material which means they can trap microscopic particles and allergens that are present in the air. Filters made of this material are not washable and need to be replaced once every 6-12 months, depending on usage and manufacturer guidelines.
One of the main functions of a vacuum cleaner filter is to prevent dirt and debris from entering the vacuum cleaner motor. When the motor of a vacuum cleaner fails, it is usually due to a clogged filter, which blocks the airflow and puts undue stress on the motor. When this happens, the motor may become overheated and stop working altogether. Therefore, it's important to keep both pre and post filters clean and replace them as needed.
Another purpose of a vacuum cleaner filter is to improve the air quality inside the home. When a vacuum cleaner is used, it can potentially stir up dust, debris and other allergens in the air. With the help of a filter, these particles can be captured before they are released back into the air. This is especially important for those with allergies or asthma, as it can significantly improve their quality of life.
In conclusion, vacuum cleaner filters are an integral part of maintaining the effectiveness and longevity of your vacuum cleaner. They serve two main purposes of preventing clogs in the motor and improving the air quality inside the home. Therefore, it's important to choose the right filters for your vacuum cleaner model and to clean or replace them as needed. Remember, a vacuum cleaner is only as good as its filter!