SoundGuy .... thanks much for the link.
That is a VERY interesting technology!
Most interesting to me was the efficiency numbers for their various models. Do these efficiency ratings translate into way less propane being used for heating motorhomes when not on hookups? It certainly seems like it should. However, 12V power usage of their models when on high heat settings seems to be about the same as the classic RV propane furnaces - in the 5-6 amp range, probably for the blower.
Another nice plus for these units is that - if I'm reading the info right - they seem to operate at variable heating levels ... instead of just ON full blast or completely OFF, as is the case with the classic RV propane furnace when it's cycling.
I'll bet they heat very quietly, too - and I like the capability of linking their control with a rooftop air conditioner's control - so you just set a desired inside temperature for your RV and the two systems automatically work together to do what they have to do to keep the inside temperature at whatever temperature you set (assuming you're on hookups for the air conditioner). NICE!
At least some of their models also seem to be able to mix the amount of outside/new air you want mixed in with the internal circulating air.
As it reads, this technology seems like a no-brainer for use in U.S. RVs ... the sooner the better.