A vibration loop is the old way - more expensive and difficult, more permanent.
I have to question your "more expensive and difficult" part. It's just an extra foot or two of tubing and eliminates a fitting, so really can't be more expensive, IMO. I guess it would be more expensive if you need to go out and buy a tubing bender.
Although the original installation used a short ( ~6") length of rubber hose.
