There are many refrigerators that are very energy efficient. One of the most energy efficient models is the Jenn-Air JCD2290HE, which costs just $58 a year to run.
In recent years, LG appliances have been made to be energy efficient. LG claims that it's third generation refrigerator compressor is the most energy efficient in the world.
A frost free refrigerator is not energy efficient. The most efficient refrigerators are the modern type but the ones that have a manual defrost. The mechanism that keeps the freezer free of frost uses a good deal of energy.
I think it would be side by side because it is bigger and septet.
Whirlpool makes the most energy efficient freezers for the average homes, only costing approximately $29 per year to run.
Zalman makes a very energy efficient computer case.
Well, the current top, most energy efficient refrigerator in today's market would be Frigidaire, which can be purchased at about $716. Please refer to this site for more information: http://www.toptenusa.org/Top-Ten-Refrigerators/Top-Ten-Large-Refrigerators
Believe it or not, your refrigerator uses an incredible amount of energy. If the interior of your appliance is metal, chances are it draws more energy than one that is energy efficient designed.
Woodway Treadmills claim to be the most energy efficient.
LEDs are the most energy-efficient lights as of 2016.
Any dishwasher that is Energy Star Rated is energy efficient.
ATP is the most efficient molecule
A smart house is as efficient as the home owner makes it. If you have used recycled wood, plastic, glass to build your home. If you've placed the most energy efficient appliances in your home. Then you have a pretty efficient home.