Thanks to all for your kind answers, yes the technician said best distilled water, but my father never used it and now getting headaches. Right, might be a coincidence. But gonna find that soon. Other thing might be the switch to the new machine? Does the air pressure change in someway even it the s...

Hello all, I am from europe, sorry for my english. My father is a CPAP user of resmed s9 for a long time now. Recently we decided to change it to the new Resmed Airsense S10 AutoCpap. We had the technician that migrated the pressure settings to the new machine. On the first 3 days, no problems. Put ...