送交者: 4U4luC2 于 2005-10-13, 19:31:28:
回答: 土库昏昏各位：你们的Air Puriers 有噪声吗，特别是夜深人静时？ 由 笑笑 于 2005-10-13, 18:42:04:
very quite but I am sure if high concentration of ions are actually good or bad to your health.
So we leave if on all day long in the sitting room, but never use it in bedrooms.