I bought a chest freezer about a year ago when they were on-sale and fits 2 carboys nicely. About 2 months ago I finally had a reason to use it to do a double batch of a lager that a buddy wanted to try. About an hour before the end of the boil we set the temp on the Johnson Controller that was going to control the freezer, then put the sanitized carboys in the freezer. After wort finished chilling down in the boil kettle wheeled the brew station over to the freezer and transferred right into the two carboys sitting in the freezer. Worked great.