[kkfx]

Heat pumps move heat, the small extra amount from the compressor does not change the game. On the other hand, things change significantly with the huge thermal mass of reinforced concrete buildings exposed to the sun, large glass facades exposed to the sun, and bare earth exposed to the sun.

Heat rises and dissipates from the atmosphere, so the point isn't the heat moved from a closed bit of atmosphere to an open one heading towards space, but rather the massive thermal mass of buildings constructed without ventilated facades, and fields and deserts without photovoltaic panels to stop the heat from massively warming the ground.

However, people don't like saying this; they don't like saying that it's the dense city that increases global warming and isn't ecological at all. They don't like it because the city serves to extract wealth from the many for the few.