I don't know about France, but domestic AC is almost unknown in the UK. I wonder if "heating water" implies that coolant is being plumbed through buildings to

I don't know about France, but domestic AC is almost unknown in the UK. I wonder if "heating water" implies that coolant is being plumbed through buildings to heat them, which could be dangerous to the occupants of those buildings if they were already too hot. Or maybe France is suffering a drought at the moment.