Quote:
Originally Posted by rowiebowie
Most class b air conditioners are 9000 to 13,500 BTU. 5000 BTU's sounds inadequate in all but the most mild heat conditions. As far as running on 12V, you'd need a huge battery bank to get long run times. Then, you'd need plug in, run a generator, or drive for extended periods to recharge.
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Older post I know, but personally we've found the 12k BTU unit we have works excellent to (1) cool down the van initially and (2) easily keep it as cold as we like. It also has a great throw of air, even on middle speed you can feel cool airflow at the front seats. This is nice when we are camped and have the seats turned facing the back.
I'm not sure how less than half of that BTU capacity would work, I think I would agree that on hot days it would be taxing that capacity to maintain a moderate temp.