EN
G4 Primary Pre Air Filter Replacement For AHU HVAC Air Handling Unit
Our primary efficiency air filters adopt high-quality synthetic fiber non-woven fabric as filter material, with gradient dense structure from loose to tight, which perfectly intercepts large particles such as dust, hair, and fiber debris in the air. Classified G1-G4 EU standard grades meet different coarse filtration demands, featuring ultra-low air resistance and high dust holding capacity, which will not affect the air volume operation of HVAC and fresh air systems. The filter material has excellent aging resistance and tensile strength, supporting repeated cleaning and reuse, greatly reducing long-term equipment operation and replacement costs. Multiple frame materials and structural types are optional, with flexible size customization to match all kinds of central air conditioning, ventilation equipment and industrial air purification systems. As the first-stage pre-filtration barrier, it effectively protects medium and high-efficiency filters, prolongs the service life of secondary filter materials, and maintains long-term stable and efficient operation of air purification equipment.
Brand:
guanlin
Spu:
chuxiao-1
Description
Product Standard Parameters
Parameter Item |
Technical Specification |
Filter Grade |
G1, G2, G3, G4 (EU Standard) |
Filter Material |
High-density Synthetic Fiber Non-woven Fabric |
Frame Material |
Paper frame, aluminum frame, galvanized steel frame (Optional) |
Filtration Precision |
≥5μm Large Particle Dust |
Average Filtration Efficiency |
50%~90% (G1-G4 for coarse dust) |
Core Performance |
Low air resistance, high dust holding capacity, washable & reusable, aging resistance, high breathability |
Working Temperature |
≤70℃ Normal temperature ventilation environment |
Structural Type |
Flat panel type, pleated folding type |
Application Scenarios |
HVAC system, central air conditioning, fresh air system, industrial workshop, air purification equipment pre-filtration |
Reusable Feature |
Washable and reusable, effectively reducing replacement cost |
Customization Service |
Custom size, frame material, filter grade, flat/pleated structure |
Key product selling points and advantages.
1. Gradient Fiber Structure, High Dust Holding Capacity
The loose-to-tight gradient synthetic fiber structure improves dust storage space significantly, with super high dust holding capacity. It avoids frequent blockage of primary filter and ensures long-term stable air supply of ventilation equipment.
2. Ultra-low Air Resistance, No Air Volume Attenuation
High-breathability filter material design effectively reduces wind resistance and equipment operating power consumption. It will not cause air volume drop or ventilation insufficiency after long-term operation, saving energy for HVAC systems.
3. Washable & Reusable, Super Cost-effective
The synthetic fiber filter material features good water resistance and tensile resistance, which can be cleaned repeatedly without deformation or fiber shedding. It replaces disposable filters and greatly reduces daily operation and maintenance costs.
4. Multi-grade Matching, Wide Application Range
Complete G1-G4 full grades cover all coarse filtration scenarios, suitable for civil fresh air systems, central air conditioning and industrial workshop dust pre-filtration, meeting diversified purification demands.
5. Protect Medium & High Efficiency Filters, Extend Service Life
As the first barrier of air purification, it intercepts large particle dust, hair and floccules in advance, avoiding large particle contamination and blockage of medium and high-efficiency filters, effectively prolonging the service life of high-end filter materials.
6. Multiple Frame & Structure Customization
Support paper frame, aluminum frame, galvanized frame and other frame materials, flat and pleated structures optional. All sizes can be customized to perfectly match various brands of ventilation and purification equipment.
Explanation and answers regarding incomplete dust removal.
Q1：A large number of large particle dust in fresh air and HVAC systems causes rapid blockage and scrapping of medium and high-efficiency filters?
EN Solution：Medium and high-efficiency filters are expensive and only suitable for fine dust filtration, which are easily blocked and damaged by large particles such as hair and floccules. Our G1-G4 primary filters intercept all coarse dust in advance, forming a front protective barrier, avoiding premature failure of high-grade filters and reducing replacement frequency.
Q2：Disposable primary filters need frequent replacement, resulting in high long-term consumable costs?
EN Solution：Ordinary disposable non-woven filters cannot be cleaned, requiring regular integral replacement. Our synthetic fiber primary filter supports repeated water washing and reuse, with no deformation or efficiency attenuation after cleaning. It effectively saves long-term procurement costs of filter consumables.
Q3：High filter wind resistance leads to insufficient air volume of air conditioners and fresh air systems and high energy consumption?
EN Solution：Low-quality dense filter materials have excessive wind resistance, increasing equipment load and power consumption. Our primary filter adopts high-breathability gradient structure, which ensures coarse dust interception efficiency while maintaining ultra-low resistance, ensuring sufficient air volume and reducing system operating energy consumption.
Q4：Ordinary filters have low dust holding capacity, causing frequent blockage and repeated cleaning in a short time?
EN Solution：Uniform single-layer filter structure has limited dust storage space and is easy to block. Our gradient loose-tight fiber structure greatly improves dust holding capacity, prolongs the service cycle of a single filter, reduces cleaning and maintenance frequency, and saves labor costs.
Q5：：Workshop ventilation dust is complex, and universal filters have mismatched sizes and poor adaptability?
EN Solution：We support full-size customized primary filters with multiple frame and structure options. Customized according to the actual size of on-site ventilation equipment, the filter fits tightly without gap air leakage, ensuring complete pre-filtration effect.
Q6：Mismatched filter grades lead to excessive or insufficient filtration accuracy, affecting air purification effect?
EN Solution：Complete G1-G4 grade system covers all coarse filtration demands. G1-G2 for simple ventilation dust prevention, G3-G4 for industrial workshop and HVAC high-demand pre-filtration. Accurate grade matching avoids resource waste and insufficient purification.
