Packing to travel can be a pain if you have to include a CPAP/BiPAP in your luggage. No matter how tall you are, the CPAP is just one more thing to lug around. At the same time, you need to keep this expensive medical equipment safe from damage. It helps you breathe while sleeping, so no matter where you are, you will always need your CPAP. Otherwise, even just one night without it can mean a really groggy, grumpy day to say the least.
I prefer to put the CPAP in a hard sided luggage and check it in with the other luggage, but this does add some risk if your bag does not show up on time. If you choose to pack your CPAP as carry-on luggage and go through security, be prepared to have them touch all the parts that go into your nose/mouth, etc. Since it’s a medical device, it should not be counted as one of your personal carry-on luggage. My husband usually asks them to change gloves before examining the CPAP so there’s no cross contamination. However, lately they the airlines seem to have relaxed their policies around CPAPs. We remove the CPAP case from the carry-on, place it in the bin, and they haven’t questioned it.
If you consider packing it in your luggage versus as a carry on, try to pack clothing around it even if you have a hard case luggage. Packing it tightly with your clothing would help prevent it from being tossed around so much. I usually pack it at the bottom (the part that is the bottom when standing upright) towards the wheels. It’s going to most likely be the heaviest part of your luggage, so it helps to keep it there.