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I presume it would help a lot if we had some rain for a change?
Yeah, that would bring a lot of pollutants out of the air. Air pollution itself can prevent cloud water from condensing into raindrops and snowflakes, though. I’m not sure how much of a role that plays here, if any.
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Don’t read Chinese but it seems designed for 30 sqm? Anything about filter replacements?
Right, it’s designed for a bedroom. Filters are replaceable although I’m not sure what the cost is exactly.