Our entryway and hallways are 12" ceramic tile set in thinset which is
over 1/2" cement board set in thinset and screwed into 3/4' ply
subfloor. We would like to remove the existing tile and replace with
different ceramic tile.

Do I have to remove all the way down to the sub or can I just remove the
tile and thinset under it.

What is the best way to remove the material?

Thanks

kb