Microns are a unit of measurement used to describe the size of particles in the air. One micron is equivalent to one millionth of a meter. To put this into perspective, the diameter of a human hair is typically around 50-100 microns.
Air filters are designed to remove particles from the air, including those that are as small as 0.3 microns. An air filters effectiveness is measured by its ability to remove particles of a certain size from the air. Different air filters are suitable for certain environments and it’s important to choose the right type when purchasing.
HEPA filters, or High Efficiency Particulate Air filters, are particularly effective at removing particles from the air. These filters are designed with a complex network of fibers that are arranged in a random pattern. These fibers trap particles as small as 0.3 microns, making them ideal for environments where air quality is critical, such as hospitals and laboratories.
Panel filters are used in the spray booth industry to capture and remove overspray and contaminants from the air. They are typically made of a pleated media that provides a large surface area for air to pass through. The filters can be made of various materials such as fiberglass, polyester, or synthetic fiber, depending on the application. They are commonly used as the first stage of filtration, removing larger particles, before it’s passed through more specialised filters.
MVHR (Mechanical Ventilation with Heat Recovery) filters are used in residential and commercial ventilation systems to improve indoor air quality. These filters are designed to filter out pollutants and allergens such as pollen, dust, and pet dander. MVHR filters use a multi-layered approach and can be made from different materials depending on what’s being filtered. G3, the standard, will filter mites and dust. G4 has the longest lifespan and will filter everything G3 can but to a higher degree, as well as mold. M5 is the highest level of filtration offered in MVHR units and will filter all of the above to a higher level.
How do I select the correct air filter?
When selecting an air filter, it’s important to consider the size of particles that need to be removed from the air. If you are concerned about removing allergens like pollen or pet dander, you may choose a filter that can remove particles as small as 2.5 microns. However, if you are working in an environment where hazardous materials like asbestos or mold are present, it’s essential to choose a filter that can remove particles as small as 0.3 microns.
In summary, understanding the size of particles in the air is crucial when selecting an air filter.
Contact the Filters Direct sales team if you need more help in selecting the right filter.