High-efficiency particulate arrestance (HEPA) filters play a crucial role in controlling contaminants in indoor spaces. True HEPA filters are tested and certified to specific EN1822:2009 standards. They are useful in settings requiring fresh air to protect occupants. The filters are available in different sizes, depths and efficiencies. Users can easily identify a true HEPA component by looking for a serial number on the product’s label. To qualify, they must have the capacity to filter 99.97 percent of dirt particles or at least .3 microns (µm). If uncontrolled, the particles trapped in the filters can cause a wide variety of health problems, including asthma. Allergy sufferers are most affected by the contaminants.
How HEPA Filters Work
Sieves are the simplest filtering mechanism that comes with tiny holes designed to trap contaminants. Finer filters protect indoor occupants even from the tiniest particles. These variants can work well in equipment like air conditioners but clog faster in vacuum cleaners. This stops the cleaner from operating and undermines energy efficiency since it requires more power to circulate air. HEPA-certified filters used in vacuum cleaners feature one or more outer filtering layers to trap dust, hair, and dirt. The appliances also come with an inner filtering component known as concertina that intercepts finer particles.
Air Filter Grades
Respiratory equipment has nine grades of filtering levels, which are determined by efficiency. In addition, the grades are influenced by levels of resistance to filter deterioration. Efficiency levels include 95, 99 and 99.97 percent whereas the degradation levels include N, R, and P. The letter R stands for oil resistance, N for lack of resistance to oil, and P for oil proof. Some filters are classified starting from the letter A to E. These components are rated for their ability to resist airflow and intercept contaminants. Filters classified under Type A have the lowest capacity to trap particles while Type E variants (military grade) can protect from radiological, chemical, and biological particles.
Are you looking for HEPA Filter Installation in Southwest Florida? Contact us today at (941) 629-7733 to learn more about HEPA Filters, indoor air quality, and more.