Well, it looks worse than I thought: https://insideevs.com/news/452464/tesla-model-y-heat-pump-system-details/amp/ https://insideevs.com/news/452464/tesla-model

Well, it looks worse than I thought: https://insideevs.com/news/452464/tesla-model-y-heat-pump-system-details/amp/ https://insideevs.com/news/452464/tesla-model-y-heat-pump-sy... With home air-to-air heat pumps I took COP of 2-3 as a base for heating, it seems that COP=1 is a big deal in a car.