When I built my house three years ago, I put in masonry fire places. My wife didn't really want a wood stove so I left them open. For the last three years we have used a heat pump and burned the fireplace from time to time mostly for ambience. This January, after three years of freezing to death at about $400 a month in the winter I went to the factory and bought the last H2 unit to roll of the assembly line. For the last 4 months I have worked on installing it in my spare time. Yesterday I put a fire in it and took a hot shower. Feels good to wrap up this project.