How many mystery writers does it take to replace an inefficient light bulb with an energy-efficient one?
Two: One to screw it in almost all the way, then a second to give it a good twist at the end.
Energy Efficiency Tip
Check your water heater thermostat. Many manufacturers set thermostats to 140 degrees, although most households only need a setting of 120 degrees. Each 10 degree drop in water temperature can save you between 3 and 5 percent in energy costs.