has anyone ever done a recirc air mod?

From what i can tell earlier TJ always use 100% fresh air for the heater, so the cab never really gets toasty warm.

I was debating about cutting a hole in the inlet air plenum so that cab air can be sucked into the fan inlet. This would allow warm cab air to be reheated into warmer air verses always trying to heat cold air.

 

Hi Brian,
I think if you did that you would find that your windows would start fogging up because of the moisture inside the cabin.... it could work if you were able to adjust or turn it off some how....