RE: Do we change filter driers on units that have them inside the condenser?
I don’t do service a ton anymore, but I did work on Lennox for many years. When I had to do repairs I would remove them and sweat a straight piece of copper in their place and move them to a more convenient location for future repairs. When I was doing it was during rashes of bad outdoor txv’s so I had to remove the total charge anyway.
I would also agree with everyone else here that Yes, you should always replace the drier.