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Understanding an Air Purifier's CCM Rating
2023-10-27 10:16:51
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CCM measures the cumulative amount of pollution a filter can remove before it reaches the end of its useful life. A higher CCM generally means a longer-lasting filter.
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Under the current Chinese national standard, P4 and F4 are the highest CCM classes and are useful baseline indicators for a good air purifier. P refers to particulate matter, while F refers to formaldehyde.
Like CADR, CCM uses separate rating systems for different pollutants. Particulate-matter CCM is graded from P1 to P4, while formaldehyde CCM is graded from F1 to F4. In both systems, Class 1 is the lowest and Class 4 is the highest.
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©2026 Kelan Filtration Technology(Beijing) Group Co., Ltd. All rights reserved
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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
