Most household domestic AC units (when working correctly) will not
lower the temperature below 32 F, for  the simple reason that the
condensation will freeze at that temperature, which will ice up the
heat exchanger (evaporator). If an AC is icing up, it is usually due
to too little refrigerant. The low pressure switches on our Vanagons
should prevent that from occurring. However, if the ambient air
temperature isn't very warm but has a high humidity factor, you can
ice up (this usually should only occur in ambient temps in the 60s or
lower.)

On Jul 10, 2006, at 4:08 PM, John Bange wrote:

> Anyone know offhand what temperature the AC thermostat "clicks" at
> when you
> set the system to max cold? Maybe I'm being ridiculous, but my air
> outlet
> temperature is only 46 degrees 6 inches in front of the evaporator
> and the
> thermostat cycles the compressor to keep it there. I guess it
> shouldn't go
> much lower, as freezing becomes a problem, but couldn't it go
> lower?  I'm
> working on a half-assed scheme to pipe it up to the front vents and
> I want
> it as cold as I can reasonably get it...
> --
> John Bange
> '90 Vanagon - "Geldsauger"