I see a similar thread half way down the page.

I apologize, but maybe some additional info might come available for both of us.

One-hose models exhaust air from the room to cool the condenser. That means you are continuously sucking in outside air to make that up. That can make for a damp, clammy-feeling room. The efficiency loss is obvious It is kind of like heating a house with a open fireplace or stove. Two-hose models draw outside air through the condenser more analogous to a sealed combustion device.

IIRC, most of these units evaporate the condensate to aid in cooling. In addition, they have a tank with a float switch safety in case of very humid weather.

I'm a homeowner,not a HVAC tech, but I have found mine very acceptable for cooling. You have to drain the water into a bucket or drain but it works when you have no other options. I bought mine at Home Depot. If I remember to look up the brand, I'll re-post but it has been good for the last few years.