AC Infinity AIRTITAN T8-N, Crawlspace Basement Ventilator Fan, WiFi App-Compatible Temperature Humidity Controller, IP-55 Rated, Intake

When I lived there I had 2 vents on the side of the house at the top and bottom. I installed a inlet and exhaust fan to move some of the heat and it made a big difference. That plus the insulation panels people mentioned would help a lot. These are the ones I ended up using. I would just unplug them during the winter. https://a.co/d/05vY6m0j