If you are only running your dash air on a hot day the dash air may not be able to keep up with the volume of air it needs to cool. Recirculation mode isn't much different than bringing in outside air unless you are also running bus air or OTR air.
Senior Member
If you are only running your dash air on a hot day the dash air may not be able to keep up with the volume of air it needs to cool. Recirculation mode isn't much different than bringing in outside air unless you are also running bus air or OTR air.
Gil and Durlene
2003 H-3 Hoffman Conversion
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