Also, something that size is useless for anything but a broom closet. You’d want a unit that is window mounted to be effective, or if you are trying to cool, say, a garage or house, something larger like one of these.
I lived in a house with an evap cooler, and under the right circumstances, it worked quite well for the two or three months that those circumstances existed each year. The rest of the summer time I had to reply on the A/C unit. (which was really just a heat pump)
