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      12-06-2022, 09:50 PM   #5
cruzer666
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Drives: 2023 BMW i4 M50
Join Date: Nov 2019
Location: Los Angeles, California

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2023 BMW i4 M50  [10.00]
Quote:
Originally Posted by kbsilver View Post
I have also noticed as high as 15KW (momentarily) while preconditioning. There are two 7KW electric heaters. I only charge the car when needed, it's not kept plugged in. As the car has instant heat, I've not yet felt the need to precondition (garaged in NJ). The extra energy use from the battery to condition the car while driving is insignificant unless the beginning of a long trip.
I4 has 2x 9kW continuous flow heaters to assist the 2kW heat pump in extremely low temperatures. That’s a total of 20kW combined theoretical heating capability. In practice it would take extremely low temperatures to use it fully. That’s 68,000 BTUs.

To appreciate the overengineering level, that’s enough to provide heating for a 1400sqft house in a colder area of the country.
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