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undrdash a/c whats needed

Posted By: Dakota_Don

undrdash a/c whats needed - 04/13/09 12:58 AM

HI all what is used for an underdash a/c unit..

reason why i ask is, I am looking at a used underdash unit and I want to make sure i get everthing.
I mostly just want the inside items only..
thanks
Posted By: dartphil

Re: undrdash a/c whats needed - 04/13/09 01:32 AM

Most underdash units are self contained with everything needed. Just run the hoses through the firewall to the engine components.
Posted By: stumpy

Re: undrdash a/c whats needed - 04/13/09 02:01 AM

There should be an evaporter and fan assembly and the controls.Then just the hoses as stated above.
Posted By: SeventySatellite

Re: undrdash a/c whats needed - 04/13/09 03:01 AM

Is your car an original A/C car?
Posted By: Dakota_Don

Re: undrdash a/c whats needed - 04/13/09 03:52 PM

no my car didnt come with a/c..

so everything i need will be in the underdash unit.
Even the expansionvalve? and if so can i purchace a new valve for the unit?
Posted By: stumpy

Re: undrdash a/c whats needed - 04/13/09 03:59 PM

What are you planning for the condenser,compressor etc?
Posted By: Anonymous

Re: undrdash a/c whats needed - 04/13/09 04:08 PM

Quote:

no my car didnt come with a/c..

so everything i need will be in the underdash unit.
Even the expansionvalve? and if so can i purchace a new valve for the unit?



I've only seen a few---10 or so--hang on units, and had one on my old 70 RR. The dash unit should be pretty much self contained, only needing hoses to the compressor, receiver--dryer and condenser. It's possible on any unit that the TXV might be a proprietary unit and difficult to find a replacement for. Keep in mine that with older units you need to be able to upgrade to modern refrigerants.

(Back "in the day" after a major overhaul, I used engine vacuum!!!! to evacuate the hang on unit and then recharging)
Posted By: Dakota_Don

Re: undrdash a/c whats needed - 04/13/09 06:58 PM

as far as compressor i want to use a sanden unit..
Posted By: ScottSmith_Harms

Re: undrdash a/c whats needed - 04/13/09 07:03 PM

I just removed this from my 57 Plymouth. Pretty basic setup, AC compressor, engine brackets, condensor, evaporator, rubber lines, and under dash blower/cooler unit. Every single item is shown here. Modern versions are basically the same short of cosmetic differences.

Attached picture 5161963-CoolCarAirConditioning.jpg
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