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How does Tesla's 2021 heat-pump HVAC works?
Hey gang, new to Tesla here. Just like with most vehicles, auto HVAC never works for me, so I always operate it in manual mode. But with Tesla, I'd like to know what it's doing as far as energy consumption. For instance, I never turn A/C on in winter unless defogging is needed. But with no engine, if you turn A/C off and set temp to 70, and it's 50 outside, does the system still produce heat? What's the difference between using HVAC with A/C on and off, if the heat-pump has to work anyway? So what's the most efficient way to operate HVAC on this car for minimal energy consumption at the same set temperature? Always leave it in auto mode (where A/C turns light blue all the time)? And can you change fan speed and vent selection while still in 'auto' mode, like in some cars? On others, as soon as you change anything manually, auto turns off. I can play with that, but still want to know how to operate it in the most energy efficient way. Thanks.