You may have leaky ducts if you have stuffy rooms or rooms that are too hot or cold.
Keeping your freezer full uses less energy than an empty freezer.
If using a tank water heater, change your the heat setting from 140° to 120°.
When batteries are completely charged or not in use, unplug the battery charger.
Over-drying your clothes wastes energy, and can result in extra static and wrinkling.
For optimal efficiency, keep your refrigerator temperature set between 30° and 42°F.
Shut the flue in your fireplace and install glass doors to keep in the warm air.
Change your air conditioner air filters at least once a month for HVAC peak performance.
Turn ceiling fans counter-clockwise in the summer; in the winter run clockwise on low.
Tankless water heaters heat water on-demand without using a reservoir.