I remember the hotel rooms have individual AC units.

来源: borisg 于 2025-10-28 09:30:39 [档案] [博客] [旧帖] [给我悄悄话] 阅读数 : (223 bytes)

回答: 空调的空气入口是新鲜空气，还是楼内循环？如果是楼内循环，VOC等如何除掉？由 gracee 于 2025-10-28 08:44:19

If there is nobody and the AC is off, the air is stale. When the fan is on, air is drawn from outside and heated/cooled. So when you come to a room you need to turn the fan on for sometime to replace the stale air.

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• 我就是进去就开fan。饭店不让开窗真是大问题，每次我一开门就能马上可以分辨前客人是男是女何时离开的房。 -今年苹果树- ♂ (0 bytes) () 10/29/2025 postreply 09:22:26

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