Everyone knows the secret to staying warm is bundling up. The same goes for your house: It needs adequate insulation to help it keep out cold air. Perform a basic check of your attic insulation to make sure you have enough. The amount of insulation your home needs will depend on the region in which you live and your home's heating system. Consult a local expert, or refer to an online insulation map to help you determine whether or not to add more insulation to your home this fall.