I don't see this anywhere else on the forum. Saw this on a Lippert advert email today.
Looks promising, for those of us not full timing and taking the rig in and out of storage any given time. A quick way to winterize without all the antifreeze sounds interesting.
I'd be hesitant if I lived further north, but in Charlotte NC area it is maybe only one or two days a winter we stay below freezing all day. Even the cold nights, days are usually in the 40s and things tend to thaw during the day. For not as much of a freeze worry, this might be a good solution to quickly blowing out the water lines without all the in & out with the antifreeze.

Has anyone checked this thing out yet?