Because the heat in your Jeep is a byproduct of the internal combustion engine, and the AC is driven by the engine.
There’s more: A belt attached to your internal combustion engine also turns the alternator which generates electricity that charges your battery while also providing energy for your headlights, stereo, etc...
That’s why your battery is depleted when you turn off your motor but leave your lights on.
Electric Cars don’t have alternators. What’s in the battery is all you’ve got.
“Electric Cars don’t have alternators”
I assumed they did. My error; thanks.
Well that’s all true.
I just figured they knew that.