A HEPA filter system is required to meet the governmental standards set forth to ensure numerous aspects of high quality filtration. The requirements for this particular air filter were set in place to expressly determine the definition. Advertisers can not claim they have this type of filter if it does not meet the requirements.
Any HEPA filter system is required to remove 99.97% of all airborne particulates that are 0.3 micrometers or larger. The filter is made by using fibers that are laid in random patterns to create the smallest of openings. The naked eye can not see the openings as they are only to allow the flow of air versus the flow of particles in the air pass through.
The way that the system works is a bit unlike most filters. A HEPA filter system does not simply have a layer of fibers with pores that can allow the passage or particles. Each layer is designed to interact with the previous layer. If there are particles that make it pass the first layer of the filter the second layer catches them, and so forth. This creates a very thorough filtration system that will trap a lot more of the airborne pollutants than charcoal or membrane filtration systems.
When you use these in your home you will most definitely notice a difference if you suffer from allergies or asthma. In fact, these are the filters that are recommended for people with pulmonary illnesses. When the particle enters the filter it is going to be subject to three phases. The first phase is when it becomes trapped, known as the interception phase. It then subject to impaction, which refers to a forced flow of air that eliminates the chances of larger particles slipping through the system. Finally, the diffusion stage actually uses a specialized gas to inhibit the particles that are less than 0.1 micrometer in size from passing through the last part of the filtration stage.
With all three stages of the HEPA filter system working to cleanse the room air that you breathe, your home will be cleaner and you will be much happier. Most people even account for better sleep and overall health or energy when the quality of the indoor air is noticeably improved. The filtration system is designed to give you the best quality air that you can have while keeping the cost of the system reasonable.