Ah, the tragedy of any in-joke. If not everyone is in on the joke, eventually it stops being a joke.

Eh, I think you might think heat pumps are more complicated than they are. I think they’re about as complicated as a furnace. At the end of the day, in both your just pumping a gas from one place to another, changing the state of the gas, and then running that past air to heat or cool it.

I would say that it’s too early for anyone to know what a more solidified etiquette will be. So for now just do whatever you want so long as you pay attention to any changes in public opinion or rule changes.