Here are some simple ways by which you can significantly lower your utility bills:
Turn your thermostat down eight degrees before you go to bed (or install a programmable thermostat to do so automatically). Use heated mattress pads or heated blankets to keep yourself toasty while you sleep. This could easily yield savings of 10%.
Turn your thermostat way down when no one is home. Yes, it will feel chilly for a few minutes when you come back home, but avoiding all the wasted heat during the hours or days while you are gone will translate into big savings.
Turn the temperature on your water heater down to 120°F. Chances are yours is set as high as 145°F, which is hotter than you need for most personal and household uses. Hold the temperature at 120° and enjoy savings of up to 10%.
Get an insulation jacket for your water heater (assuming it’s not recommended against by the manufacturer of your particular model). By wrapping up your water heater, you can cut heat losses by 25% or more. A simple wrap kit from a home improvement store will pay for itself in less than a year.
Replace your water heater if it’s more than 12 years old. Water heating is the second biggest contributor to a typical home’s energy costs, so replacing an old water heater will give you a bigger bang for your buck than replacing an old refrigerator or other appliance.