Most utility companies perform energy audits for low or even no cost, and sometimes offer discounts and rebates to help you pay for energy-saving steps you take. Modern detergents clean well in cold water for all but the dirtiest loads. Keep sweaters and blankets in living areas, or try a cozy hot water bottle under your shirt and in your bed.
Trees also prevent heat loss from the house in cold weather.
Send pre-paid envelopes back with a request that you be taken off the sender's mailing list. To prevent the sale of your name, write the Direct Marketing Association, Box 9008 and Box 9014, Farmingdale, NY, 11735. You may be using up to six times as much clothing and dishwashing detergent as you need. Your appliance manuals will tell you how much you need for your water type. Become a regular at your local library.