Glenn Herbert wrote:Built by a professional to code? Somewhere in the $10-30,000 range I would suspect.
Julie Reed wrote:Len Ovens: “Some people however, would feel a line has been crossed and the heater is now a masonry heater even though it uses the same principles in it's operation.“
Are you meaning same principles as RMH, or same as masonry heater?
I’m barely at novice level for knowledge about either of these, but from the masonry heaters I’ve seen (Russian Fireplace, etc) the principles don’t seem to be the same, aside from heating a mass. The masonry heaters appear to be a firebox beneath a zigzag flue which eventually exits a vertical stack as cool gasses (co2, h2o). The mass has time to absorb the heat, but is there a high temp and/or secondary burn such as occurs in the RMH? The one I knew the most about was built by an ‘old country’ German couple, and they ran a hot fire for about 3 days, then the entire mass was warm and they built daily small fires to maintain that level. After the initial burn it didn’t use much wood to heat their large chalet style house, but the heater was probably 6’ square and occupied the center of both levels. I did various work for them in my late teens, and learned early the value of thermal mass.