A 48v version of the super-effcient inverter mini-splits would be excellent for off-grid homes. Most off-grid folks that I've talked to, along with many Energy Fair presentations pretty much say air conditioning is out of the question but I really think that if you've got the capacity to run your stuff in the winter that you'll likely make a much more comfortable home with the additional power available in the summer without the need to use generator power.
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