In the EU we have this energy efficiency rating system on a lot of things. The implementation of the system varies in each country, though. On some products the energy rating system is imposed by EU legislation and on other products each country has its own system - or no system at all.
In Denmark we use the system for cars, light bulps, refrigerators, freezers, tumble dryers and other items with a potentially large energy "impact". A is always best.
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