I didn't realize our JK had a cabin filter. Seemed silly on a vehicle with an open top and rarely doors.
...anyway, I thought our AC was messed up on a long hot summer drive and after troubleshooting found out it was only a VERY clogged cabin filter. TBH, I felt kinda stupid for missing it.
It's amazing how ugly these filters look when you pull them. I know we have pollen from the trees and flowers, but you have sporting molds and mildews and the occasional leaf that somehow makes its way to one side.
Ever since they put these into vehicles, I've often wondered how nasty the inner workings of the HVAC system really are. Of course if you have forced air heating and cooling in your house, I'm sure you are grossed out every time you change the filter on that thing. It's worth the small price to have the system steamed and vacuumed out every decade or so, depending or not on if you have bad allergies. Luckily we have a ranch style house and the ducts are fairly in two big lines. One local steam cleans it for $80. For the record dub-contractors put all sorts of things into places you would never expect. When cleaning the sump pump pit after a pump died out we had a load of change, bent-nails and screws, not to mention a few other items like a 5 year old ATM receipt.
If you have people you know in construction ask them. Many people working in basements use the sump pit as a urinal rather than getting out of the house to use the port-a-potty.
Pretty nasty and unprofessional considering the price one pays for a new house.
Definitely change these out. At minimum inspect them each year. It's easy to access them and the air that passes through them is what you breathe. Even in a JK during colder months with the top on and doors attached. It helps stop that film from appearing in the inner wind screen.
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