This is theoretical at this time. Setting up to for brewing in about a month. Since I live in Florida the AC runs about year round and my house will never be below 70 even with the new AC unless I was paying a premium every month. I am thinking a small refridgerator with a controller may be my best bet as I am sometimes gone for up to 3 or 4 days. The kit is a gift and will have 2 mini kegs with the provided supplies. I want to thank everyone for their replies and more. This is something I wanted to do for a while and I appreciate the community here.