Model X humming noise with heater

[SupriyoM]

Does Model X make a low humming sound when you turn the heat on? I am in Toronto and I am finding the noise from the car when it is put on high heat 22 / 24c.
The car is a 2022 Model X.

 

[strider]

Yes. The heat pump makes a variety of noises depending on which mode the octo-valve is in. IIRC the new MX does not have resistive heat at all so if the entire car is cold (can't take heat from the battery or motors) and it is too cold outside for the heat pump to extract from the air, it will do some wacky thing where it will run the compressor hard and extract heat from that. I don't recall the details but it can be pretty loud in this mode.

I found this video helpful: