will kick out a fuck tonne more carbon

Not if that installed A/C also functions as a heat pump that reduces gas furnace use in the winter. Especially if decent cooling also incentivizes better insulation (which would further reduce energy use at both extremes).

Carbon emissions from heating account for about 4 times as much as carbon emissions from cooling, worldwide. Replacing gas furnaces with heat pumps will greatly improve overall annual carbon emissions, even if they blast the A/C all summer.

Okay. You fix it your way.

No no no, you don't understand, the American said to just do what you want, obviously there's no need to think about it or apply logic if there's something out there you can have but don't currently own. OBVIOUSLY the American has thought ahead about the consequences for their actions and would never do anything to contribute to climate change