Are these advertised products frauds?

[ParallelLines]

Our prior thread on the mini-swamp coolers as a scam:

Chillwell A/C units. Do they work or is it a scam?

Based on everything I’ve seen about them, it’s not . . . totally a scam. What it seems to be is a micro swamp cooler, like maybe, one smallish rooms worth. If a swamp cooler works with your climate, then, yeah, it would cool you a bit. Especially for the brief time you add ice to the unit. If your climate is humid, or the temps are high enough, nope, does nothing more than a multi-speed fan would. But for the small coverage area, they seem quite expensive, so I’m leaning towards over-hyped …