Weatherization using weather stripping, caulk, insulation and outlet covers can help keep your homes energy efficiency high and protect you from the elements. Electrical outlets and light switches that are not properly insulated could be responsible for up to 5 percent of energy loss in your home. However, insulated or foam outlet covers and wallplates can seal to protect against the loss of warm or cool air. These outlet covers are inexpensive and very simple to install. Although outlet covers are small, when combined throughout your home, the amount of small breezes or drafts they allow when used without outlet covers or wallplates can be significant. For larger drafts, window draft protection can be achieved through window weathersealing which is another quick and easy way to boost insulation in your home while increasing energy efficiency.