The Pre-filters and HEPA filters are mainly using in the Air Shower. The efficiency of the pre-filters is between (G1-G4) in generally. According to the data analysis of the air shower users, for general users, the pre-filter should be maintained once in about 6 months based on 8 hours of work per day. To be noticed that the pre-filter is washable, but should not be washed exceed 3 times, means the longest life span is generally 2 years, and it has to be replaced.
The air shower is generally equipped with H13 (99.99%) HEPA filter. It usually needs to be replaced every 1-2 years, according to the management of ordinary clean rooms. But the HEPA filter in the air shower is different. If it using in the same condition as the first item above, the HEPA filter in the air shower can generally be used for 2 years or even longer. The premise is the normal maintenance, including frequent cleaning of the air shower, no dust etc. if you want the HEPA be used for a longer time.
The above is about: "How often is the filter cotton in the air shower room replaced?" I hope everyone can understand, please feel free to contact us if you having any questions!
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