Are all primary air filters the same? No, they differ in several aspects. Here are some clear descriptions and summaries of the main differences:

1. Material and Structure

Material: Primary air filters can be made from different materials such as non-woven fabric, plastic fibers, activated carbon, and metal. Each material has its own characteristics like breathability, corrosion resistance, and adsorption performance.

Structure: Primary air filters can be classified into panel, pleated, bag, box, etc. Each structure has its unique filtering area and efficiency.

2. Filtration Efficiency and Grade

Filtration Efficiency: Primary air filters mainly filter dust particles above 5μm. However, their filtration efficiency varies depending on different grades (such as G1, G2, G3, G4). The higher the grade, the higher the filtration efficiency.

Grade Classification: The filtration efficiency of a G1 filter is 40% @ 5-10μm, while a G4 filter can reach 90% @ 5-10μm.

3. Lifespan

The lifespan of a primary air filter depends on various factors like the environment, filtration efficiency, and material of the filter. In a good environment, some high-quality primary air filters can last 1-4 months. However, in harsh environments, they may need more frequent replacement.

4. Application Scenarios

Primary air filters are widely used in central air conditioning, centralized ventilation systems, large air compressors, clean return air systems, etc. Different application scenarios have different performance and demand for primary air filters.

5. Brand and Price

Different brands of primary air filters may differ in performance, quality, price, etc. It is recommended to work with a supplier that offers good quality and reasonable prices, such as DSX.

In conclusion, primary air filters differ in material, structure, filtration efficiency and grade, lifespan, application scenarios, brand, and price. Choosing the right primary air filter requires evaluation and selection based on specific usage environments and needs.