Energy efficiency in the home is not just about saving resources, making less of an impact on the environment, and “greener” living – though all of those things a great in themselves. It’s also about saving money on heating and cooling your home to make it comfortable to live in.
The most likely source of drafts coming into your home is gaps around windows and doors. Other draft causes could include missing siding or insulated glass that has that has sprung a leak. In general, as a home wears, the more likely it is to develop drafts and air leaks.