When you’re buying an air filter, you may be confused as to which type to buy. There are many options available on www.amazon.com/BNX-20x20x1-MERV-Filter-Pack/dp/B09XC3RQ3J including HEPA, paper, and femtocells. We’ll discuss the differences and offer some tips to help you choose the right one.
High-Efficiency Particulate Arrester (HEPA)
If you’ve heard of HEPA, you’re probably familiar with its multiple uses. It is an air filter that measures efficiency in parts per million. This filter is used to remove submicron particulate matter in the air. HEPA filters are designed to reduce airborne allergens and other contaminants to the smallest particle size possible.
The HEPA filter captures 99 percent of solid particles. The filter is useful in removing dust, pet dander, and smoke from the air. The HEPA filter can be found in many air purifiers as it is mass-produced. HEPA filters can remove particles larger than 0.30 nm. Some models also use UVGI technology, which neutralizes particulate matter. If HEPA filters aren’t enough for your home, you can purchase UVGI-based air purifiers.
Paper air filter
In order to get the most out of your air filter, it’s important to replace it regularly. In fact, you should replace it every three months, or after approximately 25 hours of use. Simple: Paper air filters have microscopic holes inside that trap dirt particles. You can see the filter and notice any signs of dirt or grime when they become dirty. Make sure to replace your filter before it becomes too polluted.
Paper filters are among the most durable media. They are made from woven wood pulp fibers compressed and pleated. These filters are commonly used in automobile air cleaners, furnace filters, and indoor air purifiers. However, they can be ineffective in the presence of allergens. So, when you’re looking for an air filter, you should consider the durability of your paper filter.
Fibrous air filter
A fibrous filter captures particulate matter finely through a thick, dense physical barrier. These filters have a typical porosity of more than 70%. They are made of multiple layers of fibres of varying diameters. While this thick structure provides high efficiency, it may limit the flow of air. These filters are used in both residential and industrial settings.
Nanofibres of electrospun polymer nanofibres are placed across the mesh holes to form a network that is effective in capturing particulate matter. These fibres can be scaled and are mechanically strong. You can modify the polymer side chains to create different surface properties or coat them with a different material. These filters often use copper and carbon as coating materials. The electrospinning process has the added benefit of producing uniform fibres.