The first two nights were beautiful. The third night when I filled the water tub, water immediately poured out of it all over the counter. I noticed tons of small cracks leading up from the bottom plate and all around the seal. It was a weekend so I couldn't reach my DME company. It took them a week to respond and replace the tub. They told me to reset the machine to use it without humidification in the meantime (which my physician expressly told me not to do, and which makes me feel like my face has been pounded with bricks after I wake up, if I do).
The second water tub did the same thing after two days.
I will say that they had the heat set for 81 degrees and I changed it to 74 (I live in FL and to me breathing in 81 degrees is a little warm for sleeping). Humidity is set at 4. I only use distilled water. I've had no other problems with the machine that I can tell.
Of course, it's the weekend again and it will take forever to get the DME company to respond. I had to threaten them with notifying the physician and insurance company the last time, even though the machine is still under warranty.
Has anyone had this problem? Is the heat setting too high? Is it just a bad product?