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Upgrade your appliances
Upgrade your appliances
Potential annual savings: $150

While we're on the eco-friendly bandwagon, using compact fluorescent light bulbs saves about $30 in electricity costs over each bulb's lifetime.

But to really impact your bottom line, consider upgrading an old appliance like a refrigerator or dishwasher. Newer energy efficient appliances can save $50 to $150 a year in energy costs, according to Energy Star.

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Last updated October 20 2008: 2:10 PM ET
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