first commercially available all electric RV

Skibane wrote:
Perhaps I missed it, but didn't see any mention of how they heat or cool it.

14.3 KWH of battery energy is just slightly under 50K BTU - Enough to run a 12K BTU air conditioner for around 4 hours a day (assuming perfect efficiency, 100% battery discharge, and no other electrical loads being used).

I assume they would use some sort of heat pump for heating, since resistance electric heat is very energy-inefficient.

Typically, you get less sunlight in cold climates and during cold seasons - so there would often be less solar panel output available for heating. On rainy or completely overcast days, you either make do with whatever's still in the battery, or do without.

Mentioned an under the bed AC unit and detailed about the insulation that helps keeps things cooler (or warmer).