[CaptainGizmo]

@Jack Houpe - I don't think I've read an "average" time without the compressors running, but from a few posts I've run across, 25 minutes doesn't seem to be that bad.

In the original videos I linked, I included one from Steve Vance where he covers the Amprobe which is expensive; however, there are plenty of less expensive alternatives:
https://www.youtube.com/watch?v=-eSohberHHQ

Thank you for referring my Amprobe video.  The one you linked, is actually the “short version”, here is the prior one that is a bit more detailed:
https://youtu.be/_Z15V0CGS1Q

I know it’s one of those stupidly expensive tools, but I gotta tell ya, it’s ridiculously valuable to find an air leak..and here’s why!  It’s so sensitive and precise that you can merely POINT IT at a compartment and it’ll tell you if there’s an air leak in there..yes, ya gotta open the door though. LOL

Yes, bubbles work well WHEN you can access each fitting…one at a time.  You’ve also gotta deal with the mess/water.  Definitely the cheapest way to go.  However, for speed, accuracy, blind/tight locations, and mess-free use, the Amprobe can’t be beat.

Geesh, you’d think I was a salesman for Amprobe…right?  But nope.  ;-)