24 June 2014
The number of sold air-to-air heat pumps in Sweden has increased over the last years. This paper presents the results from independent tests performed by SP on behalf of
the Swedish Energy Agency of air-to-air heat pumps sold on the Swedish market during 2004-2013. The heat pumps were evaluated in terms of efficiency and capacity for space
heating as well as noise emissions. The objective of the tests was to compare the performance of the different test objects. The results show that the efficiency of the best
performing heat pumps have improved considerably since the year of 2004, but also that there is a large spread in the performance of the heat pumps sold today. In comparison to the requirements in the new Eco-design and energy labelling regulations within the EU, some of the tested heat pumps would probably not pass the requirements while others would
obtain an A++ energy label (second best class).