My S9 displayed "heated tube failure. replace tube.". Called cpap.com where i got it from they asked me to send it back in and now they are asking me to send back in my humidifier. I guess that would be an indication I thought maybe you noticed some rainout. It is still pretty warm where I live in ...

I'm curious. How do you know the tube has failed? I've had my S9 with the Climateline hose for about two weeks now. Right now I have the hose set to 80 degrees and the house set to 68.