I have lived in the U.S. for more than 20 years and there is one thing that I can tell you, without having however a single, little doubt in our mind : The weather can change, depending on where you go, and when you go there. Here in the US, the people I was with and I have everything from mildly warm weather to blasting ice freezes, ha ha, and you can decide how to best prepare for all of them if you do your research ahead of time, just as I have. I am an avid road – tripper and have seen every state and experienced every weather pattern there is, all in all, to be as frank as I can with you. And what you ought to take note of, on that end, is the fact that your cooling or heating situation (whether in your car, in your camper, or in that new lake home you just bought down the block) both can and will be different, depending on these 2 factors I mentioned starting off. So, where are you, and at what time are you there? Do you require cooling, or heating? Do you need ONE single Heating, Ventilation & A/C expert to come out to you, for help? Or are you in a greater space or home, required several? Do you need a furnace installation or an repair? Think of all this, and method ahead, BEFORE you go out and travel the country! I had have failed to do our proper research on Heating, Ventilation & A/C cooling supplier costs and method repair settings, in advance, and paid the price.