Problem is South Florida winters are hot as well. Imaging December and being at the beach in flip flops and shorts. I need to move to a folder area to mine with a lot of power.
you can put them underground if you have the possibility, or do somerefrigerator stuff, in the room where you hold the miners
and anyway how do you mine in summer, if in winter is already hot?
Downclocking it in the morning and overclock it slightly at night? Alternatively, place it somewhere away from the sun.
I wouldn't consider to go with refrigerant. Unless you have a backup UPS, in case of power failure, your miners can short out due to condensation forming on it.