Using a swamp cooler

The basic problem with using swamp coolers in areas where they work well, in an RV, while off the grid, is the quantity of water that they use on a daily basis. For example, at +95 degrees F and 20% humidity (typical desert environment where water is scarce) it wouldn't be unusual to use 3 to 5 gallons of water per day to cool a +-300 sq. ft. RV. If the humidity remains low, expect no more than a 20F drop in temperature. How much water do you typically carry in your RV?

If you happen to have a convenient readily available soft water source, . . . . no problem. If not, well, . . . . now you know why it's not a more popular idea.

Chum lee