I just thought of something,

Can I unplug the AC compressor in the winter and run MAX AC with the setting to max heat so the cab heats faster/better? 180* and winter does not mix, so if it can recirculate the air from the cab, the coolant temp drop might not be as bad because it is not using cold air from the outside.

The fancy thing would be to make a switch, but i don't want to cut the wire.

BTW, what exactly does the defrost setting have to do with the AC? I know that the air is routed through the condenser so moisture does not accumulate on the windshield (thus drying the air). Is there anything else to that?

 

The idea behind running the a/c while on defrost mode is exactly that. Refrigerated air carries less moisture. (thus, making defrost a bit more efficient on those humid days....) Disconnecting the a/c during the winter won't hurt anything. And your idea is a valid one. Go for it.

P.S. My take on it is, in the winter, ALL the air is ALREADY refrigerated.... why do it twice?

 

There should be a connector around the cyl 1 valve cover that is the wire to the A/C compressor clutch. Disconnect that and you wont have to cut anything.

 

That is what i was talking about, the plastic connector behind the compressor in the engine wiring harness. Making a SWITCH (in the cab) I would need to cut the wire, run it to the switch in cab, then back to the wire.

 

yeah i did this today cause i notice that my heat was not up to par it makes a huge difference

 

The reason the ac is connected to the defrost is so that the compressor cycles periodically during the winter to maintain the seals lubrication.

You will not remove any moisture from 32*F air with your ac system. I can prove that with a psychrometric chart if required to do so.

If your heat is not up to par, May I suggest you flush your heater core and or visit www.heatertreater.net for their products.

 

With the compressor running you can clear fog off the inside of your windows a damn site faster.

 

May have to try this

 

It had been told to me about 10 years ago to periodically run your AC during the winter so the system doesn't gum up (For older cars though. I was driving a 1986 IROC). I guess the defrost thing is what manufacturers realized to change in order help those parts last longer.