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Products description

Air filter pockets G4, F5, F6, F7, and F8 refer to different levels of air filters commonly used in HVAC systems, particularly in the context of Air Handling Units (AHUs). Here's a breakdown of each:

G4 Filter

Efficiency: The G4 filter is a basic filter with a nominal efficiency of around 30-40%. It's designed to capture larger particles like dust, pollen, and some mold spores.

Usage: Suitable for residential or commercial environments where basic filtration is required. It's often found in areas where air quality is relatively good and the primary concern is preventing large debris from entering the system.

Features: Typically has a coarse weave and can be made from synthetic materials or fibers. It offers minimal resistance to airflow, which helps maintain energy efficiency.

F5 Filter

Efficiency: An F5 filter offers moderate filtration efficiency, capturing about 40-50% of particles. It's more effective than a G4 filter at trapping smaller particles.

Usage: Commonly used in residential and light commercial settings. It provides a good balance between filtration and airflow resistance. It can effectively remove common allergens like pet dander, pollen, and some dust mites.

Features: The filter media is finer compared to a G4 filter, allowing it to capture smaller particles. It still maintains relatively low resistance to airflow, ensuring efficient operation.

F6 Filter

Efficiency: With an efficiency of approximately 60-70%, the F6 filter is considered a mid-range filter. It can trap finer particles compared to G4 and F5 filters.

Usage: Ideal for environments where better air quality is desired, such as in schools, offices, or commercial buildings. It's also suitable for use in residential settings where occupants have allergies or respiratory issues.

Features: The filter media is denser, enabling it to capture smaller particles. It may start to have a noticeable impact on airflow resistance, so it's important to consider the HVAC system's capabilities.

F7 Filter

Efficiency: An F7 filter has a high efficiency rating of around 70-80%. It's designed to capture very fine particles, including many bacteria and viruses.

Usage: Often used in healthcare facilities, laboratories, and other environments that require strict air quality standards. In residential settings, it's typically only necessary if someone has severe allergies or a compromised immune system.

Features: The filter media is even finer, providing excellent filtration performance. However, it can significantly restrict airflow, so it's essential to ensure that the HVAC system can handle the increased resistance.

F8 Filter

Efficiency: The F8 filter is one of the most efficient filters available for general HVAC applications, with an efficiency of about 80-90%. It can trap extremely fine particles, including submicron particles.

Usage: Primarily used in critical environments such as hospitals, clean rooms, and other areas where sterile conditions are required. In residential settings, it's very rarely used due to its high cost and potential impact on airflow.

Features: The filter media is very dense and offers exceptional filtration capabilities. It must be used with caution as it can greatly reduce airflow and may require significant modifications to the HVAC system to accommodate.

When selecting an air filter pocket for your AHU bag filter, consider factors such as the surrounding environment, the specific air quality needs of the space, and the capacity of the HVAC system to handle the chosen filter's resistance.

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Advanced equipment

We adopt advanced equipment and instruments to implement standardized management

7*24-hour after-sales service

We offer 7*24-hour after-sales service to ensure customer satisfaction with our products.

Customized as needed

We can customize filters of different specifications and models according to user requirements.