How do you flush freon out of the AC?

At parts stores such as Advance Auto Parts, Checkers, etc. there is a solution called "a/c flush". If you have an a/c charge kit, you can use it with the a/c flush to install in the system. For best results undo each connection to blow out each section. After all this, be sure and replace all filters, "o" rings and the drier and use the freon oil mix to recharge. Good Luck!