humidifier and heated hose getting cold

I have the Philips System One CPAP. I was using it on the System One setting to reduce rainout for several years. This year, I started noticing that when I woke up, I was using less and less water every night. I also have asthma and it is triggered by cold dry air. I started having asthma attacks several times a night, and my water tank would be cold and full, even though the heat setting was on 5 (highest). I turned off the System One setting and tried that way. I got plenty of humidity, but even on the lowest heat setting, I would wake up with a mask full of water in an hour or 2. I called my medical supply company, and they had me come if for a heated hose, and told me to stop using the system one setting. I got that 2 weeks ago. It seemed better for a few nights, but now it is happening again. My system will preheat fine, water and hose, but as soon as I put the mask on and the system goes from preheat to normal, the water and hose get cold and stay that way. I can't get a new machine or humidifier for another year. Any tips for this?

How long have you had this machine? If a year or less, the insurance company or Medicare rented the machine from the DME. After a year, the machine in essence became yours as it is sort of a "rent to own" deal. If the machine is older than a year, the machine becomes your problem. If this is the case, you could try calling Phillips Respironics and see if they can offer any advice or support. It is probably out of warranty but they might shed some light on the least expensive course of action. You might also try getting with your PCP and explain the issue which is bad for your respiration and perhaps get a NEW prescription for a new machine... if your condition or condition of your CPAP is changed perhaps the insurance company will spring for another prior to the normal period.

The machine is 4 years old, so I would have to wait another year for a new one. I saw the pcp about it and he gave me the rx for the heated tubing conversion, but I have not yet told him it isn't working. I will try what you suggested. Thanks!

Four years in your hands means you are the defacto owner of that machine. There are repair places and google is your friend. This link makes some good suggestions:

https://blog.easybreathe.com/broken-cpap/