Diagram for climate ducts

[Stefcho]

I’m disappointed in the realization that there is no cabin air filter for the 2015 Lincoln Navigator. I am hoping to find a diagram of the layout for the climate ac system. I plan on finding out if I can install some sort of makeshift filter for air coming into the cabin.

 

[FirstNavie]

This should help you, I used the Ford Parts site to look up the heating and cooling diagnostics for your 2015.

https://parts.ford.com/shop/en/us/transmission/powertrain-engine-parts/air-vent-duct-cabin-intake-inlet-p-bl3z18471a?pdp=y#/sectionId:4079638