In message , Tim+
writes
Slomo wrote:

No reason why a well designed climate control can't have a
button which tells it to operate the way you want when getting
into the car cold and do it the way you want when you tell it to
stop doing that by unpressing that button when warm enough.



Why would you want a system to mimic idiotic behaviour?

Climate control left to its own devices does *exactly* what Tim is trying
to achieve without interference. It works to get the cabin to the preset
temp as quickly as possible. If the engine isn't hot enough no amount of
fiddling will get it to heat up faster.

Takes about 5 miles in a diesel Fiesta:-(

How difficult would it be to reverse the air con to give heat in the
cabin?

--
Tim Lamb