I have seen several similar setups on this site, mostly putting the freezer in the basement and running the lines. do some searching and I 'm sure you can find them.
I would think you would have to insulate the beer lines between the garage and the kitchen.
Hey, careful, man, there's a beverage here! - The Dude
I don't understand the purpose of the line, "I don't need to drink to
have fun." Great, no one does. But why start a fire with flint and
sticks when they've invented the lighter?