Cost – $5-15 per window/door
Savings – $50-100/year[1]
Installation time – 30-60 minutes per window/door
Tools needed – Weatherstripping, utility knife, tin snips or hacksaw, measuring tape, soap and water, finishing nails, hammer
Maintenance – None
Instructions
Due to the differences between types of windows, the confusing names of window parts, and the different kinds of weatherstripping, the best way to learn how to install weatherstripping is by watching a video of the particular type. Products vary from peel and stick foam, to aluminum and rubber, to metal strips. For advice on what type of weatherstripping is best, ask at your local hardware store or consult http://energy.gov/energysaver/articles/weatherstripping
General weatherstripping
http://www.youtube.com/watch?v=IO1QnvAjr-I
Single and double hung windows
http://www.dummies.com/how-to/content/how-to-install-weather-stripping.html
Doors
[1] http://energy.gov/energysaver/projects/savings-project-how-weatherstrip-double-hung-or-sash-windows