Return to the water heater and set the temperature of the thermostat by turning the screw clockwise. While turning the screw towards a hotter setting listen for a CLICK when the thermostat reaches the temperature in the tank. This means power is now going to the heating element and the water inside is getting hotter.
Evaporative cooler. An evaporative cooler (also swamp cooler, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling differs from typical air conditioning systems, which use vapor-compression or absorption refrigeration cycles. Evaporative cooling works by exploiting water's large enthalpy of vaporization.
Evaporative Coolers. Evaporative coolers, also called swamp coolers, are well suited for climates where the air is hot and humidity is low. They combine the natural cooling properties of water with a steady breeze to lower indoor temperatures.