"jtpr" wrote

My undertanding is that these are, or can be, ventless so I would not
have to worry about an external chimney.

They work well and are very efficient. I use one in my shop and it has been
very good.

My fantasy would be to build
a stone wall in the middle of the wall with the fireplace in it and
hang the LCD screen above the mantle.

Leave it as a fantasy. That is too high for a screen and you'll regret it
after while. There as some guides as to screen size and mounting height for
best viewing so check them out.

Saw the picture. Nice house. Looks well kept.