Had to look that up!🤣 Essentially the same thing. I used foil tape and secured the fan to the end of the hose, inside a modified square Tupperware container the same size, to give it some stability and not look so jankey. That pulls in cool air and the exhaust fan keeps it flowing too. Seeing that Peltier idea has me thinking I should figure out…

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Almost identical set up here. I’m using an older 69 w/o WiFi. I have an AC Infinitiy cpu cooling fan “adhered” to a 4” inlet hose that pulls cool lung room air in and has helped me keep temps down too. 🤘🏼

Big Lake, Minnesota! NW of Twin Cities