[diesel_john]

if you have eve troughs, a rain barrel, old cistern, or surplus tank, a small properly sized pump, a soaker hose or two along the peak. running 24/ 7 will cool the tank back down everynight. late fall thur early spring heat the house with it. it will save enough power costs to finance a solar cell, battery and eventually run for free. You will have to monitor the water quality and add bleach when necessay. i bet, i could build it for a couple hundred. the sound of trickling water in the desert, priceless.