If space is an issue, and you can't use a full sized fridge, I used a 4.4 cu. ft. all fridge unit that I got at hhgregg for about $190. It can fit under counter, and with removing the shelves on the door and replacing it with plexiglass, you can fit two corny kegs and a CO2 canister in it. That is what I did when I built my bar and have been very happy with the set up.