Vapour Injection Heat Pump - Technical Details for 2025 Mach E, applicable to Lightning design (?)

[Albern]

I found this link from a post on X which leads to the Mach-E forum. It's a detailed technical analysis of the vapour injection heat pump (VIHP) that is coming to the Mach-E for the 2025 model year. It's my assumption that this is the same if not similar functionality and design as what is on the 2024 and above Lightning.

Information about how the VIHP has been sparse to date so this is appreciated. Anyone with a more technical background on the subject care to comment on how this design works?

Interestingly, there is also a PTC heater that acts as a backup and one member on the thread indicated that with the current Michigan climate, the PTC doesn't appear to come on very often - it's mostly been the VIHP that has been providing heat. Also, the frunk for the 2025 Mach-E had to be redesigned and is shallower to accommodate the diagonally mounted condenser.

From my read, it seems to work similar to a cold-climate heat pump which pulls energy from the air - I wonder if coefficient of proficiency (COP) can be calculated for the Lightning's thermal management as a result.

Full link here - https://www.macheforum.com/site/threads/2025-mach-e-heat-pump-technical-info.42304/

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[Grumpy2]

WOW, that is very complex, .... I had no idea. Service by a dealer when it isn't performing will be painful. Another very complex system to repair with many valves, fittings, etc. Certainly not a Tesla system.

So much added complexity especially since the informal results that have been posted so far seems to be less than a significant increase of travel range.

 

[TaxmanHog]

Thanks for sharing!!!!

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