German economy minister Robert Habeck plans to increase installation of the devices to a rate of more than 500,000 per year from 2024, to a total of six million by 2030.
Spiralling energy costs
Pumps have also become more appealing in a time of spiralling energy costs, due in part to the Ukraine conflict, and could be particularly appealing if teamed with rooftop solar panels and with storage batteries as homes go turn to green energy.
Pausder said purchasing heat pumps could be prohibitively high while the contracting model created an alternative that would help modernise existing homes.
Thermondo, which has partnered with LG Electronics as a supplier, calculates that six million households are suitable to be changed to heat pumps already.