Thanks Pugsy, I have had my old machine for a long time about 16 years. It had been making a little noise. So I found a machine on line. It was a up grade from my. I thought it would work. A new machine was cost me more than I could do. But I will use the one I bought for parts. According to the lin...

Have been a cpap for over 20 years. My last machine lasted 17 years. I purchased this one online. Can't set it to where I need it. The highest I can get is 18.5. it's a hc221le. How do I get it higher. Have reset it several times but it goes back to 18.5. any suggestions...

Have hc221le but pressure is not enough. How can I turn it up. It's on 18.5 now. Tried resetting it but it goes back to 18.5. Is that the highest it will go.