When you are living in your own house you will need to purchase lots of appliances. First make a list of what all appliances you may require and then do a little bit of research to find out which unit is best for you. Whatever appliances you purchase check for the ones that have energy stars. Energy star rated appliances may have higher upfront cost but the annual savings that you are going to make from the energy bill is going to compensate the extra amount within one year. The Consortium for Energy Efficiency is the organization that rates the appliances, lighting as well as HVAC systems. There is website for CEE from where you can get a list of products that the organization has approved for labeling energy star ratings. Before shopping for a product check whether it is listed.
The CEE does not approve energy stars for products that are poor in quality and that consume more energy. Again these appliances are further divided into those that meet the minimum requirements and those that are highly efficient. Of course the cost of the most efficient unit will be more but it can be compensated from your annual energy bill. You can rely on the energy star rating as they are genuine ratings given after checking efficiency. The CEE energy standards are made more stringent every two years so that it matches the new standards of manufacturing. The energy stars are now printed on top of the appliances. Check the product and the energy star rating to ensure higher efficiency.