There are certain shopping strategies that one would be wise to follow when looking to buy a new appliance. Firstly, measurements of the size of space intended for the machine must be made. Ensure too that the space in which the appliance door will open is large enough.
Second, and perhaps most important, is to ensure good a good broad knowledge of different brands and models. Identify those features that are necessary for your own personal buying. Are the machines noisy or do they vibrate? What safety features do they have? How much water do they consume? How energy efficient are they?
The cost of operation is another important feature not to be ignored. The more energy an appliance uses, the more expensive running it will be. If an appliance is going to last ten to twenty years, utility bills are an important consideration, then an appliances energy rating can make a big difference.
There are also things you can do after purchasing an appliance to reduce your energy bills. If your refrigerator is close to the stove, dishwasher or heat vents, try to move it away. This will reduce the heat flow near the machine and thus reduce the energy needed to cool it. Try to vacuum the coils on the back of your refrigerator every three months to eliminate dirt build that reduces efficiencies. Also, check the door gasket for air leaks. Finally, defrost the your freezer when more than a quarter-inch of ice builds up.
A pre-rinse of dishes is generally not necessary for many machines that automatically per-rinse or has a rinse / hold cycle. Use the 'energy saver' option found on many of the machines.
In terms of clothes washers, ensure that the water level used in the washing machine is compatible to the load of clothes. A small load does not require the whole tub filled. And finally, clean your dryers after each use or as necessary.
Small things like this can be very significant in terms of energy conservation. Remember to check the energy rating and to compare the features of each appliance available. Your own personal preferences may vary greatly from others, so careful consideration is important when deciding what to buy.