If you live in a climate with high humidity, then it’s not going to work. Humidity in the air is warm and swamp cooler is also creating humidity. An actual air conditioner removes humidity while cooling at the same time. Not only do these work better outside, but it’s not supposed to cool your space but to blow cool air directly on you. I’m on my way to buy one on Offer Up for the dog house. I live in Phoenix. Using the swamp cooler outside in 105° and a small space will work perfectly fine, but not in a shed and not in climate with high humidity. That’s why you see people use swamp coolers for primarily animals like horses in hot climates. I’m a mechanical engineer. I know things. 🙃
She said she put a gallon in the bottom. But this isn't meant for cooling a shed down. It says in the manual it's not an actual AC unit like she needs. It's pretty decent for my medium size room.