Get a counter current air exchanger. It vents cool inside air to the outside along a heat conducting surface that contacts the hot outside air to the inside, wi

Get a counter current air exchanger. It vents cool inside air to the outside along a heat conducting surface that contacts the hot outside air to the inside, with only 5-8% heat import. Here are some explainers as well as some DIY methods. https://www.youtube.com/results?search_query=make+counter+current+air+exchanger https://www.youtube.com/results?search_query=make+counter+cu...