Change a light If every American home replaced just one light with an ENERGY STAR light, we would save about $700 million in annual energy costs while preventing 9 billion pounds of greenhouse gas emissions, equivalent to the emissions from about 800,000 cars.

Heating and Cooling If every American household serviced their heating and cooling systems and changed their air filters, inspected their ducts for leaks and programmed their thermostat for energy savings while they're away or asleep, we would save $14 billion in annual energy costs while preventing more than 160 billion pounds of greenhouse gases, equivalent to the emissions from 14 million cars.

Sealing and Insulation If every American household added insulation to their attic, we would save more than $1.5 billion in annual energy costs and prevent nearly 25 billion pounds of greenhouse gases, equivalent to the emissions from 2 million cars.

Home Office If every home office product purchased in America this year were ENERGY STAR qualified, we would save $75 million in annual energy costs while preventing 1 billion pounds of greenhouse gases, equivalent to emissions from 90,000 cars.

Home Theater If each TV, DVD, and home theatre system purchased in the U.S. this year were ENERGY STAR qualified, we would more than $240 million in annual energy costs, while preventing more than 3 billion pounds of greenhouse gases, equivalent to the emissions of 270,000 cars.

Appliances If every refrigerator, dishwasher and clothes washer purchased in America this year were ENERGY STAR qualified, we would save $640 million in annual energy costs while preventing 4.5 billion pounds of greenhouse gases, equivalent to the emissions of 385,000 cars.

Holiday lights If every decorative light string purchased in America this year were ENERGY STAR qualified, we would save $262 million in annual energy costs, while preventing 3.5 billion pounds of greenhouse gases, equivalent to the emissions of 296,000 cars.