After the mortgage payment, the largest homeowner expense is for utilities and the major component is energy. Contributing factors include air leaks, insulation, heating and cooling equipment, water heaters and lighting.

Computers, monitors, TVs, cable and satellite boxes, DVRs and power adapters are spinning your electric meter even when they’re not being used. Even though they only represent a small percentage of a home’s total energy consumption, about 3/4 of the electricity is used when the products are turned off.

Unplugging devices can actually make a difference in the size of your electric bill. Plugging several of these offenders into a power strip with a single on/off switch may make the task easier. Most computers have options to put them into sleep mode or even turn when not in use.

The Department of Energy has an Energy Saver Guide and do-it-yourself suggestions.