Tried the Blue Flame, will be looking at another way to heat

I think of the high/low venting as at least partly for air movement/circulation.

Do keep your own experience with the Wave in mind...sounds like you "survived" all right, as have thousands of other users that know how to follow the simple venting requirements.

I'm also a member of that group- now on my second (a Wave) due to having somehow damaged the face of the blanket on the one I'd been using for five or six years.