I live in an energy efficient home. During the 30 or so degree nights, our home will stay comfortably warm. We do have wood heat, but that's not being used in the summer. We live on a dirt road. Leave one door or window open and WOW....yes, we get dust. BUT, even with the doors/windows closed, I still have to dust every few days (yeah, well, I SHOULD dust every few days). So, I'd say given the location, those little gaps just suck the dust in. Maybe when you park it there, you can stuff the holes with something.....and see if that helps.