Now that the weather is very hot in most part of the country, many people intends to buy air conditioners and refrigerators. But what factor do you consider when buying a particular model or brand? Most people I know buy by the brand names. They prefer appliance brands they have grown up with. That's not necessarily bad. But have you ever considered looking at that yellow paper sticking in front of the displayed unit in the mall? I'm referring to the document containing the EEF or the Energy Efficiency Factor (EEF).