If you really want to package the draught beer the final time correctly, you need a glycol system. Too many times individuals forget that beer has gas. You heat a gas and it will expand, chill it and it will contract. Glycol systems maintain temperature between the cooler and the faucets. Therefore no temperature issues. For a system that is 6-7 feet, try it with forced air. Be certain that there are no air leaks anywhere and you have return air. No guarantees that the temperature will maintain to the faucet or your refrigerator can handle additional demand. If it does the job, great!
Scott Zuhse, Instructor
Micro Matic Dispense Institute