De'Longhi Portable Evaporative Air Cooler - White | Energy Efficient Cooling for Home, Office & Outdoor Use | Perfect for Bedrooms, Patios & Small Spaces

I use this to cool a small working area in a garage loft. The air temperature coming out is about 8 degrees cooler than the ambient room temperature (measured with a professional Kestrel weather instrument). That means, when the loft is 85 degrees, the air coming out is 77 degrees - and that's a very comfortable difference. At just 60 watts power draw (vastly less power than an air conditioner, which matters since my house is powered by solar PV), this is an economical way to cool a small space like that. It is also easily repositioned on its roller wheels as needed. I found the fan sound is fine and not too loud for my loft area.I live in a high desert area in the inland Pacific Northwest. Summer time temps range typically from upper 70s to mid 90s. Relative humidity is usually 20 to 25% outdoors. I've read some reviews from others saying they live in a dry climate but the unit doesn't work for them - if that's the case, check your INDOOR humidity. In our house, the indoor humidity is often 40-45% while outdoor is running 20%. The humidity makes a huge difference in performance of an evaporative cooler. Coolers like this won't do much at all at 50% or higher humidity. Where I use this swamp cooler - in the garage loft - the RH is around 20-25% and it works just fine.