Agree.hi there sorry to here that. for the little one i know she was overheated but when they are wet you should not put her in front of the fan. i am not trying to tell you what to do but they chill off very fast and keep there tempertures its ok to cool off in water though. they get like a chest cold and get real raspby well good luck
You'll also want to be careful lowering the temperature too much by using an AC unit. Doing so can cause them to become heat stressed at a much lower temperature than normal after they get acclimated to the cooler temps from the AC unit. It's hot here in TX 3 seasons out of the year. Unless you are willing to keep up an AC unit forever and make sure that nothing happens to shut it down (like a brown out due to ERCOT being overtaxed with electrical usage), you could risk the chickens getting heat stressed and dying at temps in the 80s and 90s. Better to keep air moving with a fan, offer cool water, lots of shade, ice bottles for them to lay next to, water down the ground in the run for them to lay on, etc.