Energy efficiency

Energy efficiency

The familiar efficiency labelling of fridges, washing machines and televisions has now been extended to cover heating equipment. Both individual products and complete heating systems will be given energy efficiency labels.

The thinking: The labelling complies with European Union (EU) directives and is designed to give consumers a basis for comparison and thus to help them make informed decisions when buying heating systems. Consistent, standardised practice will be ensured by the predefined methods of calculation that have been laid down by the EU Commission.

Product label: Every boiler will receive what is known as a product label. This will state the energy efficiency for space and, where applicable, water heating. Other figures – such as sound power levels –  might also be given, depending on the heating system.

System label: If a complete system is being installed, e.g. a boiler with a temperature controller and a DHW cylinder, there will be a system label to show the energy efficiency of that system as a whole. This is usually better, as all the components have been matched to one another and expansions to the system, for example with solar collectors, have been taken into account.

Usefulness: The labels show the energy efficiency as defined by certain standards. However, this shouldn’t be the be-all and end-all when it comes to domestic heating. Many factors influence the energy efficiency and consumption of a heating system: How warm should the house be? How much hot water will be used? Is there underfloor heating? Purchasing decisions should therefore not be made solely on the basis of the energy efficiency label.

SystemEnergy efficiency class*
WWP LS 8-B, R-E A++ / A++
WWP LS 10-B, R-E A++ / A+
WWP LS 10-B, R A++ / A++
WWP LS 13-B, R A++ / A++
WWP LS 16-B, R A++ / A++
WWP LS 8-B, R-E-K A++ / A++ / A**
WWP LS 10-B, R-E-K A++ / A+ / A**
WWP LS 10-B, R-K A++ / A++ / A**

*Per EU Regulation No. 811/2013 seasonal space heating energy efficiency under average climate conditions, low-temperature (35 °C) / high-temperature (55 °C) applications

**Water heating energy efficiency, tap profile XL.

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