Okay we are really dumb and we have a neighbor that has the structure for a walk in cooler but is a 3 phase which they told us is very expenisve to get hooked up and running but we would like to get the structure and convert it somehow. Is this possible? Could we use two central air units. Our barn is full of heifers and two cow calf pairs we are nursing along so unfortunately we cannot get the our show heifers even under a fan and it is getting very warm here in Minnesota now. We reached over 90 degrees today and really need to get the hair growing on our cattle. Any suggestions would be greatly appreciated!!!