While I am trying to reduce my power consumption it is a good time to look at the criteria that make up a power economical fridge.
Here is the details I found
Buying Smart
Refrigerators
Refrigerators come with an EnergyGuide label that tells you in kilowatt-hours (kWh) how much electricity a particular model uses in a year. The smaller the number, the less energy the refrigerator uses and the less it will cost you to operate.
Before you go shopping, explore the Energy Star� product database. It lists high efficiency refrigerators, refrigerator-freezers, and freezers that exceed appliance efficiency standards - making it easier for you to decide which models to look for when you go shopping.
Also check with your local utility company to see if they are offering rebates on energy efficient models.
Refrigerators with the freezer on either the bottom or top are the most efficient. Bottom freezer models use approximately 16 percent less energy than side-by-side models and top freezer models use about 13 percent less than side-by-side.
Through-the-door icemakers and water dispensers are convenient and reduce the need to open the door, which helps maintain a more constant temperature; however, these convenient items will increase your refrigerator's energy use by 14 to 20 percent.
Mini-doors give you easy access to items most often used. The main door is opened less often, which saves energy.
Too large a refrigerator may waste space and energy. One that's too small can mean extra trips to the grocery store. Your best bet is to decide which size fits your needs, then compare the EnergyGuide label on each so you can purchase the most energy efficient make and model.
A manual defrost refrigerator uses half the energy of an automatic defrost model but must be defrosted regularly to stay energy efficient.
Refrigerators with anti-sweat heaters consume five percent to 10 percent more energy. Look for models with an "energy saver" switch that lets you turn down - or off - the heating coils (which prevent condensation).
Freezers
Chest freezers are usually more efficient than upright freezers. Chest freezers are better insulated and cold air doesn't spill out when the door is opened.
Automatic defrost freezers can consume 40 percent more electricity than similar manual defrost models.
