This unit does not use a condensing coil or create vapor. It is rain curtain over a baffle with a strong fan cooling the rainfall water. It fills the basin and then gets sent back to mix with the pool water via the plumbing. No vapor is created. The true HVAC style chillers/heat pumps would seem to pose a greater risk for such than this. But I am not an expert on that subject.
Hmm, that does make much sense, the heat that is being rejected has to go somewhere. I suspect it operates like a smaller version of a cooling tower. The warmer water flows down over the top of an evaporative media, a fan draws air through that media in the opposite direction. The air picks up the heat from the water, so hot air gets blown out the top and colder water goes down to the basin where it gets pumped out. I suspect you will find that hot air gets blown out of the top of that thing.
Just as susceptible to legionella as a cooling tower, but maybe the chemicals used in a pool are good at preventing that from happening. Now I’m curious and I’m going to fixate on this until I read up on it.
For anyone who read all that and needs PDHs just dm me your email I will be sending out certificates this afternoon
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The fan is at the top and is where the air is drawn in. Air escapes out the side where the removable covers are.