Finally, check your furnace. Replace the filters every month and have it serviced each year. Consider buying a new furnace if you feel it is too out-of-date. Also check to ensure all pipes and ducts are insulated. You should also insulate your attic and basement properly. A minimum R25 rating is suggested for under-floor insulation. Add additional insulation to the attic or floors if you feel your home is under-insulated.
Next check your water heater, it consumes 17.7% of your energy. Changing the elements can improve its efficiency, especially on older water heaters. Newer energy star rated heaters consume less energy, so consider buying one if yours is older than ten years. You can also insulate pipes leading to the heater, or wrap the unit in insulation.
Electricity is the other half of your energy bill. Your appliances and electronics consume about 34% of your in-home energy, according to EIA statistics, and the average cost is 12 cents per kilowatt.
Check lights to ensure energy saving bulbs are in use. Compact florescence bulbs can save 75%. Consider replacing older appliances like refrigerators with newer, more energy-efficient models.
You can save money without making any improvements to your home. If you are in a deregulated state, compare your current electricity supplier with others in you area. It may lead you to find a cheaper provider. Sites like energysavings.com let you make comparisons side-by-side. Simply choose which one offers lower rates.
Simple, inexpensive improvements like adding curtains to windows cut energy costs. So, make this part of your initial audit as well.