How are energy star ratings calculated?

Question

I understand that energy star ratings are designed to give the consumer some idea how efficient a device is, but I want to know how they calculate their kwh per year rating? I would assume that it has to do with how many kwh's per complete cycle X so many cycles per year, but how many cycles per year is their mark to measure by.

I ask this because I acquired a kill a watt kwh measuring device and I want to know how many cycles to multiply one complete cycle of my clothes dryer by to compair its "energy star rating".

Answer 1

Energy star rating for washers is based on 392 cycles per year.  I was unaware that they gave ratings to dryers, since that is one of the most inefficient appliances.  However, I would assume that you would use 392 cycles per year since washers and dryers typically go together.

http://www.energystar.gov/index.cfm?fuse...