Part of it comes down to an air conditioner just being a heat pump that works one way only, so there’s fairly easy opportunity to build in some efficient heating capacity going forward without much incremental cost by installing reversible systems.

The other thing is that a heat pump can be so efficient, that it’s net beneficial to burn nat gas at a power plant and use that electricity to run a heat pump.

But this all falls apart near and below freezing temperatures.

NYC will still want to have direct-burn natural gas heating for cold days because that’ll be more efficient than resorting to resistive heating.