Here are two more modifications to the inside of the unit.
We added some black filter inserts to the furnace vents on the floor. We didn't like the way the ducting was visible through the vent, and we were concerned about stuff falling into the vent and going down the ducting. So I bought some black furnace filter material from Home Depot and cut pieces to size. I also added this to the cold air return.
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Here is the other interior mod. This is purely "cosmetic", pun intended.
My wife wanted to have a lighted makeup mirror in the bedroom. She bought a small mirror with a suction cup mount. However the suction cup would not stick on the side of the wooden dresser. So we bought a 50¢ tile at Home Depot and mounted it to the wall with Command velcro strips. Now the suction cup mount holds securely to the tile, which is securely attached to the side of the dresser.
We also put command hooks and two small puck lights above the TV to hold and light another mirror.
These items come down for travel, or if we want to watch the bedroom TV.
HWHL