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How Often Should Air Purifier Filters Be Replaced?
2023-10-26 17:01:19
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Typical replacement intervals are 6–12 months for HEPA filters, 3–6 months for activated-carbon filters, and about one year for photocatalytic filters.
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A HEPA filter is a high-efficiency filter that captures fine airborne particles such as dust, bacteria, and viruses to help keep indoor air clean. Under normal conditions, a HEPA filter lasts from six months to one year. The actual replacement interval should be adjusted according to use.
2. Activated-carbon filters
Activated-carbon filters adsorb odors and harmful gases to help keep the air fresh. Because their adsorption capacity is limited, they must be replaced regularly. A typical activated-carbon filter lasts three to six months, although the interval should be adjusted according to actual use.
3. Photocatalytic filters
Photocatalytic filters can remove harmful gases and odors and also provide antibacterial and disinfection effects. Because they require prolonged ultraviolet exposure to work, their service life is generally somewhat longer than that of ordinary filters, typically about one year.
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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
