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Energy-efficient water heaters


Energy related Products directive


The Ecodesign or Energy related Products Directive 2009/125/EC is a framework directive which primarily focuses on energy in use. It does this by setting minimum requirements for certain energy consuming products.


This initiative, by all member states of the European Economic Area, is to assist the EU’s achievement of its 20-20-20 target to reduce the use of energy by 20% by 2020.


What has happened so far?

The scheme was initiated in 2009 and it has already manifested itself in the area of white goods, such as washing machines, freezers refrigerators and tyres.

You will already, no doubt, be familiar with the sight of these energy rating labels shown alongside these products at their point of sale. 


How does the rating work?


For directly heated water heaters, the rating is based upon the efficiency of the product delivering against a defined usage pattern. The rating will be on a scale from A to G, with A being the most energy efficient.


Indirectly heated water heaters, however, are rated according to their heat loss.


All Zip water heating products that are liable to be rated in this way are shown in the following pages and have their rating displayed under the heading of ‘ErP rating’.