Ice probe chiller, thermostat, and a cooler..end of problem. It runs about 5 to 7 hours a day in the middle of summer, Runs up your electric bill $1.10 a month, mine stays at 68 all year round even if its a 95F+. No moving parts besides a fan and the ice probe has a life of over 100,000 hours. You can even make your own ice probe for under $25 and if you already have an old cpu heat sink then your over half way there, hit me up for details. This system is basically set it and forget it, no ice cubes, bottles, or bs.