Remodeling advice sought-3 direct vent FPS from 1992
We're in the middle of remodeling our 1992 house which has 3 direct vent FPs made by Majestic Co. They've not worked for years. We'll see if they can be repaired, but we're rebuilding the entire face and surrounding structures of 2 of them, anyway. We want to bring the fam room FP further out into the room as it's presently recessed back even with the back of the built-ins on each side instead sitting parallel or further ahead of them. The built-ins were obviously an afterthought and overwhelm the FP as they are 2 feet deep.
We're wondering if we can use an elbow and safely pull out the fireplace a couple of feet and then build a false wall around it to the ceiling so the new built-ins fit better.
Another option is to switch to a ventless FP box, but I'm concerned the room would get too hot while using it.
I'm open to any advice about Fire places, advantages or disadvantages of vent vs ventless, wisdom from remodeling experience, etc.