GreggB
Thank you for taking the time and trouble to respond. I felt, on reading VW response, that:
... Auxiliary heaters have the task of heating the vehicle interior. Auxiliary heaters work in connection with the heating/ air conditioning system. Auxiliary heaters can be used when the vehicle is stationary, to pre-heat the vehicle interior when the engine is switched off, or during the journey (e.g. during the engine's warm-up phase). If the auxiliary heater is switched on while the vehicle is stationary and the engine is not running, the engine may also be pre-heated. Auxiliary heaters heat the coolant, which in turn heats the air in the heat exchanger. The heated air then flows into the vehicle interior and heats it.
VW were telling me that I had the sort of heater that you are calling the Cabin Heating Auxiliary Heater/Cabin Heating unit. I feel VW have been confusing and shall indeed continue my research into getting one of those. I am supposing these are also other names for a Parking Heater.
Attached is the photo I took this morning showing the controls for my heaters.
View attachment 39469
thank you.
The controls at the bottom are to operate the rear heater, simply a second heater unit and fan linked to the engine and cab heater system, only operating with ignition on.
A parking heater will operate completely separately from the engine and cab system, usually by burning fuel and blowing hot air out of their own vents, ideally powered from leisure battery with independent operation. The auxiliary heater can perform this function but by heating the engine cooling system and using the standard blower motor, obviously less efficient and risks a flat starter battery if run off that.
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