Properly insulating your home helps keeps your energy bill down. However, with old houses, insulation is a very costly endeavor. If you have just bought a home and do not have the capital to properly insulate the home, replace leaky windows and doors, or otherwise seal the house, there are several cheap and easy options to keep the cold out and the heat in.
Most heat in the home will be lost from poor sealing of old doors or windows. If the sealant is bad on your doors and windows air can leak in. Also, heat generated in your home will leak out. Buy draft covers, also called draft snakes, to insulate them. Draft snakes are small pieces of fabric that you can place at the bottom of door frames or windows to prevent drafts from coming in from the outside. Draft snakes are cheap, about $10 each, and can be bought at most local department stores.
Curtains and Shades
Hang heavy curtains on your windows to prevent air leaking out from the home and to prevent cold air from coming in. Cellular shades are another option. These shades cover up your window so that air will not come in while also letting in natural sunlight to heat the home. This is a distinct advantage over heavy curtains. Curtains can run $100 or more while cellular shades price from $30 to a little over $100.
Buy self-stick rubber sealing strips form your local hardware store. These strips are usually under $10 and can be put around windows and doors to seal them against drafts. They are easy to install. Clean the surface you wish to apply the rubber seal. Take a strip and run it along your window to measure it. Using a knife or scissors cut the strip so that it fits into place. Take off the protective backing from the strip to reveal its adhesive. Slowly apply the strip to your surface going from one end to the other, making sure it goes on evenly.