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Nordsyn Study on Air-to-Air Heat Pumps in Humid Nordic Climate

image of Nordsyn Study on Air-to-Air Heat Pumps in Humid Nordic Climate

This study was performed for Nordsyn sponsored by Nordic Council of Ministers. The aim was to analyse if the energy labels of air-to-air heat pumps give consumers in Nordic countries sufficient information on energy performance, since declared performance was suspected to be higher than in reality. Due to very few field measurements available, this suspicion could not be confirmed nor rejected. It was found that many heat pumps are declared for lower capacities compared to their intended use in the Nordic countries, to obtain a higher SCOP value on the energy label. Market surveillance tests show that it has become rarer that heat pumps defrost during the laboratory tests. Altogether the study shows that the current energy label does not give clear guidance to the consumer. Recommendations for field measurements as well as suggestions for standard and regulation developments are given.

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Recommendations

First of all, stronger incentives should be created to label air-to-air heat pumps sold on a Nordic market (possibly with an exception for Denmark) for the Cold climate. As it is now, the arrows are just left out and the figures are replaced with an X. Since other performance data for colder and higher capacities are often declared in the marketing, much data is probably available for the manufacturer or importer, but due to competition reasons, performance data for the cold climate is left out (since it would show a lower efficiency). Therefore, we recommend that if the heat pump is not declared for any of the climate a text should be added on the label stating for example

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