>>2930966Evap coolers are absolutely dog ass in Arizona. You don't live here, otherwise you'd know that.
Surprise surprise, the effect of evaporative cooling is significantly diminished by the presence of humidity, and in 115° weather, your swamp cooler will raise your house to 60%+ humidity in only an hour or 2.
Also, evaporative coolers are recommended for anything below 71° degrees wet-bulb temperature.
At 110° f and 10% humidity, the wet-bulb temperature is 73° F.
I can test the actual wet bulb temperature in a few hours, when the day peaks, to give you a non-theoretical wet bulb temperature, but in my experience, swamp coolers do not work here, despite the theory. Infact, the theory says we are just out of range of an evaporative cooling system.