Swamp cooler in a shop? It's very dry here (humidity rarely reaches 30%) After considering an air conditioner while wiring my shop; I was thinking with a humidity level that is so low; why not a small swamp cooler? All the blanks I so carefuly packed when moving here, have mostly cracked due to the shock of being in Northern California. Maybe the swamp cooler will boost up the humidity a bit, while cooling the shop. Plus, they are very cheap to run. Any ideas? My over sized two car garage is 25x29 with finished walls and ceiling.