I Should Have Looked More Closely...
At the model on the lot.
If I had, I would have told them to not install the in house water filter. It had to have been installed prior to the cabinets being installed. It's at the back of one of the base cabinets in a corner...
Now I'm hoping that by using an external filter the house filter will last longer and I won't have to change it but once a year - or less.
One more thing on the winterizing checklist!
FOR SALE 2014 BOSS 6.2L F350
2012 Surveyor SV264