I am renovating a small house from 1930 I recently bought (well, I bought most of it) just outside Paris proper. The current energy rating is F, so obviously there's a lot of work to be done on that. I will get to work on the insulation (separate question) and replacing the gas heater by a heat pump.   Then there is the question of what kind of heat pump to install, and where to put it. The current heater is in an oversized laundry room that will be turned into an actual room. We will