Thank you for the tip! Although we have been looking at a lot of YT videos for van conversion ideas, I never thought to look for videos about the CPAP (duh!).
I use a CPAP machine while sleeping. My DH just finished setting up a d/c system so we can go camping. He tested it with a d/c oscillating fan and it ran just fine. But when we hooked up the CPAP machine, it did not work correctly. Although the pressure read as being correct, it was not as much...