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[–]magnora7[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Haha I might try it out on my AC. I mean I could literally just spray it with my hose sprayer by hand and measure the efficiency difference I think, to test it out. Then build a little control circuit with one of those electronic water hose switch boxes and a hose to the spigot

If it works that'd be amazing. I guess the efficiency from rain is already proven. It's just a matter of if it's more cost effective for the water use vs energy savings