Government aid is being put in place to facilitate the installation of air/water heat pumps. If you are eligible for all these aids, you can largely finance your heat pump.
The amount of assistance granted varies according to household income, the location of the dwelling and the nature of the work to be carried out. The zero-rate eco-loan (eco-PTZ) is a loan that makes it possible to finance energy renovation without paying interest, under certain conditions. To find out if you're eligible for MaPrimeRénov' you can do your simulation online on primerenovation.org.