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Change Air Filters Monthly: Heating accounts for half of your home's energy use. Replace dirty air filters to improve air flow and take some strain off your heating system.

Wrap Your Water Heater: Water heating consumes up to 25% of the energy used to heat your home. Buy an insulation blanket to reduce your water heater's energy consumption by as much as 10%.(Source: National Renewable Energy Laboratory - Technology Fact Sheet: Water Heating, and U.S. Department of Energy)

Install Door Sweeps:  Doors are the culprits for 11% of your home's air leakage. Install weather stripping to seal the bottom of exterior doors to keep warm air in and cold air out. (Source: Keep Warm Illinois)