Philip wrote:
> In fact, A/C systems start cycling the compressor at no less than 38 degrees
> F. SO... when the air coming into the evaporator reaches this low
> temperature, the compressor is cycled or shut OFF if the air temperature
> entering the evaporator continues to drop. Otherwise the evaporator would
> become a block of ice, which would prevent any air from reaching the heater
> core (in nearly all cases).

Now THIS makes perfect sense. (I'd have to look up the temp at which
refrigerants go liquid to confirm or deny Steve G's belief.) I'm almost
certain that the A/C on my old 85 Pontiac would cycle at any temp,
though. I'll check up with the Honda soon.

Anyway, I doubt it would be that difficult (in the original design) to
construct an airflow system that would shunt warmer air around the evap
unit when the temp dropped in winter, in order to preserve the
dehumidifying characteristics of an A/C-based system.