It's cold out there. We love most of the 1930's details of our house - the built-ins, crown molding, six inch tall baseboard, even the original kitchen cabinets. One thing we don't love, especially in this weather, are the original single paned drafty windows. Since we rent, replacing them really isn't an option. So for the second winter in a row we've put up insulating window film to help us keep the heat in the house. It's simple to put up, you just put the included double stick tape around the frame, stretch the film, which is a little like non-sticky plastic wrap, over it, and then hit it with a blow dryer. It magically tightens and becomes virtually invisible, most guests don't realize we have it up unless we tell them. Don't believe us? See for yourself:
As for the most important part? The house is definitely warmer than it was without the film. It's made a noticeable and big difference. We picked ours up at our local Ace Hardware, but you can also buy it from their website ($11.99 for a kit that will cover six windows,) or at your own local hardware store. There are several brands on the market, to date we have tried several and haven't noticed a difference beyond price, so recommend going with the cheapest version you can find.