"New research from AAA reveals that when the mercury dips to 20 degrees Fahrenheit, the average driving range of an electric car decreases by 41 percent. When colder temperatures hit, EV owners have the same instinct as their internal combustion engine-driving brethren, which is to crank up the heat as high as it will go. This puts a serious strain on an EV’s battery, reducing the overall range and increasing the need to charge more often to minimize the chance of being stranded by a dead battery."
"Extreme heat is also a drag on electric vehicles. When outside temperatures heat up to 95 degrees Fahrenheit and air conditioning is used inside the vehicle, driving ranges can decrease by 17 percent, AAA reports. Extreme temperatures certainly play a role in diminishing driving range, but the use of the vehicle’s heating, ventilation, and air conditioning (HVAC) system in these conditions — particularly the heat — has by far the greatest effect."
"The problem is that, unlike a car with an internal combustion engine that can warm the cabin with waste heat, EVs have to tap into their batteries to power the climate control system."
The VergeIt seems you are the one who doesn't understand or who wants to conceal what they do understand. I've read accounts of people who look at their range meter and decide if they turn on the a/c or heat they will run out of battery before getting to the next charging station. Thus no HVAC for them.