u/Conscious-Echidna116

I am exploring the idea of living in a converted cargo camper full time. But I’m wondering what the costs will be to cool and heat the space.

For example a 8.5x20 trailer that has 1 inch foam board insulation in the walls and ceiling with a 12000 btu mini split with heat pump. No insulation in floor.

How difficult/costly will it be to cool (in humid Georgia summer) and keep it warm during the winter? (I would be comfortable at 71-72 degrees in summer. It will not be in the shade unfortunately

And if the insulation is 2 inches will it make a huge difference vs 1 inch?

I’m new to this so any help would be much appreciated.