Woodway Treadmills claim to be the most energy efficient.
LEDs are the most energy-efficient lights as of 2016.
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.
Any dishwasher that is Energy Star Rated is energy efficient.
ATP is the most efficient molecule
Any heater that has the Energy Star label will be very energy efficient. The Honeywell eco line, for instance, are very energy efficient.
No, but it is one of the most energy-efficient cities in the United States.
I think Bicycle is the most energy efficient transport.
the CFL
Compact fluorescent light bulbs are pretty energy efficient and are energy star rated.
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.
Gas-fired, storage-based water pumps are the most energy efficient type.