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
Only 20 percent of homes built before 1980 are properly insulated. You can increase the comfort of your home while reducing heating and cooling needs up to 10 percent by investing in proper insulation and sealing air leaks.