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My installation is the main point of this 'review' so far. So far so good. I have not had it in operation more than a few days, but it's working just fine in that short period of time. One of the reasons for the review this early was to post some pictures of what I am doing. It seems to be working, even though I've decreased the 5" hose to a 4" exit. I dont see any negative effect on the AC unit itself. I will follow up with any changes if anything does change during the summer months. I'm using a Dryer Vent with a galvanized 5 to 4 inch coupler I found on Amazon for 10 bucks. There are photos with temperature readings. The readings are after running for 5-10 minutes while the unit cycles on. The hose gets very warm, but so far I've not seen more than 120F while its running.