Back in my single days at my bachelor pad house I owned I really wanted a fireplace. I ended up installing a fireplace in a closet area in the center of the house. The closet went away but I had a fireplace that was open on two sides. I was a pyromaniac and had a lot of fires. I could heat the entire house easily with it. During an electrical outage I could keep warm
but I had to watch TV in the dark.
We I got married Mrs Carrera had a bigger house with a two car garage so I made my house a rent house and moved. That house had a heat-a-lator built in to the fireplace. It had heat recovery fins and a electric fan that exhausted from slots built into the brick work. It would heat the living room with just a small fire.