An Off-Grid Electric Hot Tub
Natural Building
AUGUST 14, 2021
I started out building hot-air solar collectors and designing root cellars with sunspaces on top. For those designs, I fed air to the root cellar via a 50-foot ground tube. ” “But how to run a hot tub in an off-grid campground with a 7-year-old, 150-amp-hour battery bank? Clearly, I needed more PV and battery power.”
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