@www{EHPAmarket,
title={European heat pump market data},
author={European Heat Pump Association and others},
url={https://www.ehpa.org/market-data/},
urldate={2023-10-10},
annote={Quote as of 2023-10-10: "The European heat pump market broke a new record in 2022 according to data from 21 markets [Austria, Belgium, Czechia, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Lithuania, the Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Switzerland, UK], with around 3 million units sold.  Figures gathered by the European Heat Pump Association indicate growth of 39\%, more than the previous year's unprecedented rise of 34\% in annual sales.  The total number of connected heating heat pumps (both air-to-air and 'hydronic' or water-based) and hot water heat pumps in Europe is now around 20 million."},
}