I am a hot guy, temperature wise that is. In order to sleep I need my bedroom to be cold. Closing the heating vent doesn't cut it. I need the window open with a fan in it, even in the dead of winter. My main concern with this is that there is a constant amount of cold air leaking out from the bottoms of my bedroom doors. This then cause the rest of the house to start to cool down, making my heater kick on more and more frequently. Thus costing me more money to heat the house. So here is my simple fix.
Step 1: Tools and supplies
Marker (I used red because you can see the shine of it pretty easy on the dark inner tube)
Used Inner Tube
Double Stick Tape