In our new addition, a 36" W gas fireplace was mistakenly installed, instead of the 40" W that we ordered. We didn't realize it until after the stone went up. We don't want the mantle or tv any higher so the height must remain as is, so we have two options: keep the 36" W with 27,000 BTUs or replace it with a 42" W with only 22,000 BTUs (less heat). Does anyone have experience with Napoleon fireplaces? Will the 36" look too dinky in our great room (24' W x 16D x 13H)? If we switch it out to a 42", will we sacrifice the larger flame & more heat that the 36" offers?