Look for the Energy Star

ENERGY STAR is a widely recognised and trusted label on products that meet strict energy-efficiency requirements set by the U.S. Environmental Protection Agency (EPA). ENERGY STAR certified products are third-party certified and subject to ongoing verification testing. These appliances help consumers save money on operating costs, by reducing energy use without sacrificing performance, as well as protect the environment.
Home appliances, including refrigerators, hot water heaters, dishwashers and clothes dryers consume a lot of energy. Consider purchasing appliances with the Energy Star rating (see below) if you’re in the market for new appliances or are looking to upgrade.
Smarter, more connected homes>
Automated control systems for air conditioning units, lighting and other systems that access data, such as outside air and room temperature, humidity, light level and occupancy, will boost home energy efficiency. New electronic devices and appliances can now be linked to the internet to provide real-time data that makes it easier to understand and lower energy use.
Some systems control smart appliances, for instance turning on an oven so it’s already pre-heated when you get home; turning off a coffee maker you accidentally left on; or closing a garage door or gate at your command.