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 should pre-filters, medium-efficiency filters and HEPA filters be combined in HVAC and cleanroom systems? This guide explains filter efficiency, airflow, pressure drop, service life and application requirements to help engineers and buyers select the right multi-stage air filtration solution.

How to choose top air supply, side air supply and bottom return air in a clean room? This article analyzes the applicable scenarios of different air supply and return methods from aspects such as ISO cleanliness level, air flow organization, room size, process pollution sources and building conditions, and introduces the matching ideas of HEPA, FFU, high-efficiency air supply vents and HVAC dampers, providing a selection reference for clean room engineers and buyers.

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.