What is the filtration efficiency of the air filter?

                                             What is the filtration efficiency of the air filter?

The filtration efficiency of air filters varies depending on their type and application. Generally, air filters can be classified into the following types based on their filtration efficiency:

. Pre-filter (Coarse Filters)

Pre-filter primarily filter out large particles in the air, such as dust and skin flakes. These filters typically target particles larger than 5 microns, and although their filtration efficiency is relatively low, they are crucial for protecting subsequent high-efficiency and medium-efficiency filters. In large HVAC (heating, ventilation, and air conditioning) systems, pre-filters can effectively extend the lifespan of the entire system and reduce maintenance costs. Their filtration efficiency can range from 20% to 80%.

. Medium-efficiency Filters

Medium-efficiency filters play a bridging role in air purification systems. Their filtration efficiency lies between high-efficiency and pre-filters, primarily targeting particles between 1 and 5 microns. Depending on different design and manufacturing standards, the filtration efficiency of medium-efficiency filters typically ranges from 60% to 95%. These filters are widely used in HVAC systems for intermediate filtration, protecting the next level of filters and the system itself while enhancing the filtration capability for smaller particles.

. High-efficiency Filters (HEPA Filters)

High-efficiency filters, especially those meeting the HEPA (High Efficiency Particulate Air) standard, are the pinnacle of air filtration technology. HEPA filters must achieve a filtration efficiency of 99.97% or higher for particles larger than 0.3 microns. This type of filter is commonly used in environments with extremely high air quality requirements, such as hospital operating rooms and dust-free laboratories. The core of a HEPA filter is a specially designed layer of glass fiber paper or other high-efficiency filtration material that can capture particles, dust, and various suspended substances larger than 0.3 microns, effectively preventing airborne particles from entering the respiratory tract and affecting human health.

Additionally, there are sub-high-efficiency filters with filtration efficiency ranging from 95% to 99.9%, which are typically placed before high-efficiency filters to protect them.

In summary, different types of air filters have varying filtration efficiencies, each playing an indispensable role in air purification systems. When selecting an air filter, it is essential to consider the specific application scenario and requirements to ensure that the filter's filtration efficiency meets actual needs.

Minkang currently maintains over 20 assembly lines, 50 specialist equipments and 20 patented technology, providing its services across Mainland China and overseas. The company employs more than 300 people around the world with the corporate offices in USA and China,Our company has a professional R&D team, passes ISO9001 and ISO14001 enterprise certification, and is rated as a national high-tech enterprise. We have many kinds of patents and quality inspection reports.

Our products have many kinds of different shapes and materials. We could design and produce air filters according to customers’specifications and requirements.

The filtering efficiency class is from low to HEPA 14 grade (MERV 19) according to EN779, EN1822.

Our technical department is able to develop any new air filter item for our customers, used in household, commercial or industrial.

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