Cold drafts can have many sources — from fireplaces to windows to your attic — and the older your house, the more drafty it will most likely feel. Few things are more disconcerting than when you are sitting in your warm home during the winter, comfortably ensconced in a chair or by the fire, and seemingly from nowhere you feel a cold draft blow through the house. Fixing drafts can even help keep you healthy during the winter months. Scientific research indicates that, while colds are spread through viruses, being chilled can reduce your defenses, leaving you more susceptible to sickness.
Check to ensure that windows and doors in your home are tightly closed. Inspect windows on all levels of the house. A draft you feel downstairs might be coming from a cracked window upstairs.