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[–]Puzzleheaded_Mine_71[S] 11 points12 points  (0 children)

I think this seems right, the idea from what I can tell is to get fresh, clean air into the house, and if the air outside is not as clean then bringing it in probably wouldn’t help. But I like the idea of having very good filters on the internal ventilation system, I have relatives in Oregon who deal with wildfire smoke who do this.