[zdragnar]

Look up rocket stoves, and rocket mass heaters. Properly built, they effectively produce only co2 and steam, even all carbon monoxide is consumed.

Of course, since each rmh is custom built, you need to actually test the exhaust of every one to ensure it works as intended.

Mine is pretty swell, albeit a tad annoying to keep going if we leave for a few days and the whole mass cools. With that said, it uses about 1/10th the wood of a new high efficiency wood stove we use in a different building.

[Rendello]

For anyone looking to compare masonry heaters with rocket mass heaters, this is a nice introduction: https://www.lowtechmagazine.com/2015/03/radiant-and-conducti...

RMHs are very interesting to me, but unfortunately due to their niche status, they're currently very hard to get insured.

(PS. I would love to see a picture of your RMH, is possible!)

[zdragnar]

Not mine, but what I based mine on:

https://youtu.be/8ptwncPImuo

Reading that article, I am curious as to why they say that rmh are less efficient than tile stoves. The exhaust temp on mine is around 130-150 degrees F- cooler than a fresh cup of coffee. And yet, I get pretty complete combustion- so all of the heat from the wood is captured inside my house.

I recently saw a claim that rmh can produce less CO2 for the same heat than gas furnaces, though that was just someone on the internet, I would definitely want more research to claim that.