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Why Air Filters Inside Central Air-Conditioning Units Matter
Air filters inside central AC units trap airborne pollutants, support efficient operation, and protect key components, helping maintain cleaner indoor air and reliable system performance.
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Understanding Filter Media in Fresh-Air Air Conditioners
Filter media are the heart of fresh-air air conditioners. Learn how prefilters, HEPA media, and activated carbon work, when to replace them, and how to maintain them.
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How many grades are there for air filters, such as H12?
Air filter classification is mainly based on international standards, with the core indicator being the filtration efficiency of particles of a specific size. Common classification systems and key grades are as follows: 1. European EN 1822 standard (most commonly used). This is for high-efficiency filters (HEPA filters).
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Removing Formaldehyde from a New Home: Why Composite Filters Work Best
Formaldehyde can off-gas for years after renovation. Composite filters combine rapid adsorption with chemical decomposition for more reliable long-term removal.
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How to Choose a Pre-Filter for a Home Air Purifier
Choosing the right pre-filter extends the life of the main filter and improves purification. Focus on material, structure, and ease of maintenance.
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Multi-Industry Applications of Pre-Filters
Pre-filters capture large particles in residential, commercial, industrial, and specialized environments, with designs tailored to each setting.
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Prefilter Materials and Structures: A Core Analysis
Prefilter performance depends on matching material and structure to the application while balancing capture efficiency, airflow resistance, and service life.
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A Basic Guide to Antibacterial and Antiviral Additives in Air-Filter Media
Antibacterial and antiviral additives let filter media not only trap airborne microbes but also inhibit or deactivate them, reducing secondary contamination risks.
Company landline
010-60770969
Sales Phone/WeChat: 15601000090
Purchasing Management/WeChat: 13331060986
Company Phone: 010-60770969
Address: Room 1708, Building B, Jinyu International Center, Longyu East 1st Road, Huilongguan Street, Changping District, Beijing
©2026 Kelan Filtration Technology(Beijing) Group Co., Ltd. All rights reserved
Record Number: Jing ICP No. 2022016037-2
Technical Support: Suyuan Network
Sales Phone/WeChat: 15601000090
Purchasing Management/WeChat: 13331060986
Company Phone: 010-60770969
Address: Room 1708, Building B, Jinyu International Center, Longyu East 1st Road, Huilongguan Street, Changping District, Beijing
©2026 Copyright Beijing Kelan Fresh Air Technology Co., Ltd. All rights reserved
Record Number: Jing ICP No. 2022016037-2
Technical Support: Suyuan Network
