Fweezal - from my personal experience, the only time I use my generator is when I am working inside the unit in the winter while stored so that I can have heat. I also might use it in the summer to run AC when I work on it as well. My dash air works great so I cannot say that I would need it while driving, but I have not gone south of Charlotte so far - so there may be times that I might "want one" in high heat conditions. That might be the only time (other than boondocking) that you might want one. It is really a cost / benefit question. But, me personally, would rather have it, than not. I hope that this helps.
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