It took me all of one day to make and mount this heater, window is vacuum sealed, 17- 3/4″ PVC water hose 51″ long, pine frame inside window, oven thermometer, 12 volt computer fan, 12 volt charger, convection heat. It was a cheap experiment and it works, I want to ad another 12 vollt charger( sun movement), another computer fan inside would be nice too. Thanks for Watching
