Industry Insights & Technical Resources

Bag filters are commonly used medium-efficiency filters for AHU air-conditioning units, covering F5-F9 efficiency levels. They rely on multi-bag structures to achieve large filtration area and high dust holding capacity. The selection requires attention to efficiency level, number of bags, bag depth, air volume and resistance. It is widely used in commercial HVAC, industrial plants, and clean room pre-filtration to protect the back-end high-efficiency filters, reduce system energy consumption, and extend the service life of filter materials.

High-efficiency filters with partitions are commonly used terminal air filtration equipment in clean rooms, pharmaceuticals, medical, electronics and high-end HVAC systems. Based on actual engineering selection, this article introduces in detail the differences between H13 and H14 filtration efficiency levels, as well as key parameters such as initial resistance, rated air volume, dimensions, installation methods, and clean room levels. Through the analysis of different application scenarios, it helps engineers and buyers to reasonably determine filter specifications, take into account system energy consumption, service life and procurement costs while meeting cleanliness requirements, and provide practical reference for the selection and procurement of high-efficiency filters.

How to choose industrial air filter? This article starts from three common industrial pollution sources: dust, oil mist and chemical pollutants, analyzes the filtration characteristics of different pollutants, and introduces the applicable scenarios of primary-efficiency, medium-efficiency, high-efficiency, HEPA and activated carbon filters. It also summarizes the key technical parameters that need to be confirmed when purchasing industrial filters to help factories, engineering companies and HVAC purchasers develop more reasonable filtration solutions.

This article analyzes the common causes of increased noise after filter replacement from the perspective of HVAC system design and maintenance, and provides targeted troubleshooting and solutions to help engineers and equipment purchasers reduce system operating noise.

There are significant differences between ISO 5, ISO 7 and ISO 8 cleanrooms in terms of air filtration, terminal HEPA configuration, airflow organization and air circulation volume. From the perspective of engineering design and procurement, this article introduces the three common cleanliness levels of primary-efficiency, medium-efficiency, HEPA filters and FFU configuration methods to help cleanroom engineers, equipment purchasers and manufacturing companies choose appropriate air filtration systems.

This article introduces the differences between H13 and H14 HEPA filters in terms of filtration efficiency, penetration rate, MPPS testing and application scenarios, and explains the selection and purchasing considerations for H13 and H14 HEPA filters.

This article analyzes in detail the performance differences, applicable scenarios and selection methods of F5, F6, F7 and F8 air filters, introduces the application of different filtration levels and HEPA filters, and provides selection reference for HVAC, clean room and industrial air treatment systems in terms of filtration efficiency, air volume, resistance and purchasing parameters.

G3 and G4 are common primary air filter grades, mainly used for front-end filtration of HVAC air conditioning systems, fresh air systems and air purification equipment. Both are used to intercept larger particles in the air, but there are certain differences in filtration efficiency, resistance and applicable scenarios. For foreign trade procurement and engineering projects, correctly distinguishing G3 and G4 helps to choose the appropriate filtering solution.