As of 1 January 2019, suppliers (manufacturers, importers or authorised representatives established in the EU) must register their products in the European Product Registry for Energy Labelling (EPREL). For air conditioners in particular, this obligation applies to products in the scope of Delegated Regulation (EU) 626/2011 on the labelling of air conditioners. All air conditioners in scope, either of single duct, double duct or other categories should be labelled. There is no priority ranking amongst these categories.
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