Yeah, we're getting black mildew in the wondow frames and sweaty windows, especially in the winter when the windows are shut tight (even though I keep the house quite warm)
You can buy it through home hardware? Good to know! Is it something you can install yourself? (not me - but Drew's handy
)
edit: $349 for the 1300-1500 sq foot model. I don't see any bigger ones but I suppose you could put two in?