X2
I have a couple of industrial fans from TSC. I've been using them for 4 years without a problem. I usually turn them off for a few hours a day. I know the chickens appreciate them, because they gather in front of them. The rest of them love to sit in muddy areas, that i make under the trees.
I know what you mean, one minute they are gasping like a heat stroke is coming on. The next minute, they are laid out in the hot sun like beach bunnies.
I do not use a mister. I am in a very humid, hot climate. Think of it as getting your clothes damp, on a hot humid day. You can't cool off, because your clothes are too warm and wet. It just feels hotter.
I make mud in the shade. Sometimes I sprinkle mealworms in it. The chickens start digging...