Thanks for all the replies. I cannot find a model number for my Remstar CPAP, but I did find a part #1018547. I looked at the Respironics site and there was no match. It is definitely a "pre-M" series and it is NOT a C-Flex. My wife only noticed my non breathing once. I will ask her if it was early...

Thanks for all the replies. I cannot find a model number for my Remstar CPAP, but I did find a part #1018547. I looked at the Respironics site and there was no match. It is definitely a "pre-M" series and it is NOT a C-Flex. My wife only noticed my non breathing once. I will ask her if it was early ...

This morning, my wife informed me that I had stopped breathing while wearing nasal pillows. Is there a difference in the pressure settings between the nasal pillows and a regular mask? To me it seems that there is less pressure in the airstream. I have had the nasal pillows for a couple of years and...