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Cleaner conditioners needed, says association

FEWER than 1 percent of the air-conditioning units in Shanghai are cleaned regularly, says the Shanghai Indoor Environment Purifying Association.

There are more than 15,000 commercial and public buildings with central air-condition systems in the city, but only 50 of them are cleaned regularly, according to a Shanghai Morning Post report today.

Last year the association conducted air quality tests on commercial buildings, hotels, shopping centers, schools, entertainment venues, cinemas and theaters, libraries and internet cafes. Only 10 venues achieved an excellent rating for air quality.

The high cost of cleaning is probably the reason for the poor figures, an industry insider said. It costs up to hundreds of thousand yuan to clean major air-conditioning units.

The Ministry of Health issued rules for the cleaning of central air-condition systems in public areas in 2003, and this means the cooling towers of air-conditioning systems must be cleaned every six months and the amount of dust on the surface of the air ducts must not be greater than one gram per square meter.


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