Savings start at the top, which means proper insulation can make a big difference because the cost to heat and cool a home makes up more than 50 percent of energy use.
Also, set the temperature in your home to 68 degrees when it's cold out, and 78 when it's hot.
You could also save thousands of gallons of hot water by putting your dirty dishes right in the dishwasher.
"These days, I promise you, you don't have to pre-rinse; your dishwasher will do the job with that," said Dan Diclerico, with Consumer Reports.
You can save even more by using less water in the shower.
Experts say the average household spends about $2,000 a year on energy costs.