21 August 2020
Switzerland has been a pioneer in the development and commercialization of heat pumps. Until the 1980s, mainly large heat pumps were sold. Since the 1990s, the availability of reliable and efficient small devices as well as environmental aspects have been driving forces. In a ten-year period from 2007 onwards, almost 20,000 units were sold year after year. Since 2018, sales have risen again, reaching 23,980 units in 2019. Of these, 85% are small systems up to 20 kW heating capacity for single-family homes. Future challenges lie in the retrofitting of heat pumps in existing multi-family buildings and in office buildings in urban environments.