Cooling is a big issue but heating I would use a oil filed heater like: https://www.amazon.com/Kismile-Oil-Filled-Adjustable-Thermostat-Protection/dp/B08G4RZXCD/ref=sr_1_8?crid=25SH0ZQ0U6JCA&keywords=oil+filled+radiator&qid=1653840717&sprefix=oil+filled+raditor%2Caps%2C89&sr=8-8