Air Filter FAQ

Aurashu air filters are designed for a wide range of HVAC and air purification systems across industrial, commercial, and residential environments. They are suitable for central air conditioning systems, air handling units (AHUs), fan coil units (FCUs), cleanroom ventilation systems, and fresh air purification systems. In commercial buildings such as offices, hotels, shopping centers, and airports, Aurashu filters help maintain healthy indoor air quality and ensure energy-efficient system operation. In industrial applications—such as pharmaceuticals, electronics manufacturing, food processing, and precision laboratories—high-efficiency and HEPA-grade filters ensure compliance with strict cleanliness and safety standards by effectively removing fine dust, bacteria, and micro-particles. For hospitals and research facilities, Aurashu filters support controlled environments with medical-grade air purity. Additionally, the filters can be customized to fit special systems like negative-pressure isolation rooms or corrosion-resistant HVAC setups. Overall, Aurashu provides reliable filtration solutions compatible with diverse HVAC system configurations worldwide.

Aurashu uses a wide range of high-performance filter materials designed to ensure maximum filtration efficiency, durability, and air quality across various environments. The choice of material depends on the filter’s grade, application, and required performance level.For coarse and medium filters (G1–M6), Aurashu typically uses synthetic fiber media such as polypropylene (PP) or polyester (PET), which offer strong dust-holding capacity, moisture resistance, and long service life. These materials are ideal for general ventilation and pre-filtration systems in commercial and industrial buildings.For fine filters (F7–F9), we use glass fiber media or composite synthetic materials with electrostatic charge treatment. These materials can efficiently capture smaller particles such as pollen, fine dust, and PM2.5, providing stable performance with low resistance and high energy efficiency.For HEPA and ULPA filters (H10–U17), Aurashu employs ultra-fine borosilicate glass fibers or PTFE (polytetrafluoroethylene) membranes, which can capture 99.97–99.9995% of particles down to 0.3 microns or smaller. These materials are widely used in cleanrooms, healthcare facilities, and precision manufacturing.Additionally, Aurashu offers activated carbon filters that combine adsorption and filtration functions to remove odors, VOCs, and harmful gases, enhancing indoor comfort. All filter materials are compliant with RoHS and environmental safety standards, ensuring low environmental impact and sustainable performance.

The filtration grade of an air filter represents its capability to capture airborne particles of various sizes, directly reflecting its performance and efficiency in air purification. Aurashu’s air filters are classified according to internationally recognized standards such as EN779, ISO 16890, and ASHRAE 52.2, ensuring compatibility with global HVAC systems and clean air requirements.Filter grades typically range from coarse (G1–G4) and medium (M5–M6) to fine (F7–F9) and high-efficiency (HEPA H10–H14 or ULPA). The higher the grade, the finer the particles the filter can remove—from visible dust and pollen to bacteria, smoke, and microscopic aerosols.Selecting the right filtration grade depends on the specific application:Coarse and medium filters are suitable for general ventilation and pre-filtration.Fine filters are ideal for office buildings, shopping malls, and industrial facilities requiring higher air quality.HEPA and ULPA filters are used in cleanrooms, laboratories, pharmaceutical production, and hospitals where ultra-clean air is essential.Understanding filter grades helps maintain indoor air quality, protect HVAC components, and improve system efficiency and longevity. Aurashu offers customized multi-stage filtration solutions to meet diverse industry requirements, combining performance, energy efficiency, and environmental responsibility.

Aurashu offers a comprehensive range of air filters designed to meet diverse environmental and performance requirements across our HVAC product lines. Our standard options include primary (coarse) filters, medium-efficiency filters, and high-efficiency HEPA filters, each optimized for different purification levels.Primary filters (G4 class) are mainly used for removing large particles such as dust and lint, effectively protecting fans and coils.Medium-efficiency filters (F5–F9 class) capture finer particles like pollen and mold spores, maintaining indoor air quality.High-efficiency filters (H10–H14 class) or HEPA/ULPA filters are available for cleanroom and medical environments requiring ultra-pure air.We also provide customized filter solutions, including activated carbon filters for odor control and antimicrobial-coated filters for healthcare or food production applications. All filters comply with ISO 16890 / EN 1822 standards, ensuring reliable filtration efficiency, energy savings, and long service life.