There are many guys running their mines now located in outdoor huts using just box fans to move air. There is a a guy on YouTube that lives in central Florida and keeps his running 24/7 outside in his screened porch. Clearly, they are not affected by the humidity! Thankfully where I'm at the average temperature has been around 10F since November. My mining rigs (in my basement) have saved me about $750 in heating costs this winter already.