Heat can use 6x as much power as A/C.
Over the past several years when I've had people who really didn't know anything about electric cars ask me questions, they did frequently ask, "How much does the air conditioning affect your range?" The first thing was to surprise them by pointing out that heating has a much bigger impact than A/C does. They are in the gas car mindset, where a gasoline engine is busy desperately trying to get rid of tons of heat energy out the radiator and tailpipe so it doesn't melt itself down. So heating the inside cabin of a gas car is always "free". An electric motor is so efficient that it doesn't have all that excess heat, so it has to run an electric heater to warm you up, and that pulls from the same battery as the "miles".
And specifically, the reason why there is such an energy consumption difference is that air conditioning is a mechanical heat pump, which is way more efficient energy conversion than a resistive heating element.
So I describe an analogy of a ranking of what items draw relative amounts of energy, descending order, but with different spacing of how much their impact is:
(1) Moving the car. Adjusting your speed makes huge differences, even by 3 or 4 mph over longer distances.
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(4) Heat. Can be very noticeable in winters, and need to plan for it.
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(22) Air conditioning. Much less than heating, but still a little noticeable--maybe 5-10% difference in range.
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(1,556) Everything else. All other things are completely unnoticeable energy draws. I've seen people talk about headlights or wipers or the stereo or the touch screen consuming energy or shutting them off to extend range, which is total nonsense. They are so small compared to driving speed or HVAC that you would never possibly be able to detect any difference from those.