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Janelle wrote:Well, I don't live in exactly frigid climes, but my rainout problem was solved quite easily and inexpensively with just a hose cover made of the artic fleece material. This was in a 62 degree room.

I've just never really seen a reason to consider a heated hose after trying the cover.

Janelle,

A 62 degree room in TX must be a lot warmer than a 62 degree room in WI. Without my heated hose I would get something you might more acurately refer to as monsoon-out rather than rain-out. I've tried the fleece cover and even made a short cover for my aura, but without the heated hose these do not solve the problem for me.

I really find this interesting. I have not had to put anything over my hose of any kind and other than a few little drops that were in the folds of my Activa, I have never had rainout of any kind. This is in TX where I live but I also travel a great deal and it has not been an issue anywhere I have been. I wonder if the machine type and humidifier type has something to do with it as well. I just spent two weeks in NC where they guys I was with kept the house freezing and it still was non existant for me.

I think there might be a fix for the 420E users:

It appears that this interface will not work with the 420E. It only works with a special hose that they provide, so there is no small diameter pressure tubing line for the flow sensor.

The sensor tube inside of the 420E hose is nothing more than plastic tubing that you can buy at Home Depot -->same size, same everything.

So, one could purchase around 7 feet of this small diameter tubing from Home Depot.
Drill a small hole in the side of the Comfort Curve tube down near the end where it attaches to the flow generator and feed the small tube through, leaving about 4 inches of small tube hanging out (like the 420E tube) AND, having the other end of the small tube ending up in the "Y" connection of the Comfort Curve hose.
Create a seal around the hole where the small tube dangles out with some silicone caulking.

In essence, build a 420E compatible hose out of the hose that comes with the Comfort Curve simply by adding a pressure line. Plug the sensor tube and the main tube into the appropriate holes on the 420E and voila!

What do you all think? Possible?

I had a Polaris by Invacare as my first machine. I never had rainout with it even with the h/h at it's full setting. I recently purchased a RemStar auto and have it set at 4 for my FF with no problems, but I have to turn it down to 2 for any type of nasal interface or I get serious rainout problems. Werid.