AC/Heat Install Question - Defender Source
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  #1  
Old July 17th, 2012, 01:35 PM
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AC/Heat Install Question

When you install AC in a truck, won't it cover up the lower dash heat vents? Or is the back side of the evaporator open to allow heat to enter it?

I ask because the aftermarket AC kit I can get has a option for heat and even defrost.

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  #2  
Old July 17th, 2012, 01:58 PM
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I was just wondering the same myself.

Curious to see replies....
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Old July 17th, 2012, 01:59 PM
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the 94 unit has holes cut in the back
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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Old July 17th, 2012, 02:00 PM
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Mike Barnett
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The factory plenum has notches in it for the heat vents. I imagine aftermarket units would cover them up as you said.
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Old July 17th, 2012, 02:04 PM
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nothing a hole cutter can't cure
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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Old July 17th, 2012, 03:04 PM
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The Elite AC kits have a foam-sealed opening to the heater vents. The heat blows out two vents that are built into the bottom of the plenum. likely any other under dash kit intended for defenders would be the same way.
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Old July 17th, 2012, 09:36 PM
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On the LHD for the aftermarket kits they cover the rH vent but re-direct it down lower. The good part is you can also use the fan on the A/c unit to blow heat out of all the vents. Works great.
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Old December 11th, 2016, 07:45 PM
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Quote:
Originally Posted by Capt Milks View Post
On the LHD for the aftermarket kits they cover the rH vent but re-direct it down lower. The good part is you can also use the fan on the A/c unit to blow heat out of all the vents. Works great.
Curious if there needs to be any modifications to the ducting to do this. When I have the heat on and turn on just the fan for the AC vents it doesn't blow heat, just ambient air.
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Old December 11th, 2016, 09:03 PM
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My to-be-installed CoolAir unit has pass-thru ducts, with foam backers to the stock heater air box, and goovy circular adjustable flaps so you can move the heat wherever you want.
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