I have a ResMed AirCurve 10 with the heated tube. Recently, for some reason, I have been waking up with an extremely dry mouth. I decided to look at the water reservoir this morning and it’s completely empty and dry, even though I filled it last night. This never happens. I have my humidity set to max (8), but this NEVER used to happen. There would still be water in it (at least half) the next morning. I also realized that I have it on the floor about 12-14″ away from a baseboard heat register. Would this effect the water being evaporated? Like, is the heater making it evaporate at an accelerated rate in combination with the BiPAP humidifier?