I've been following these guys for over six years now giving their stoves a serious workout and showing them at the Mother Earth News Fairs and Permies.com Rocket Heater Jamborees. I've even installed them for clients where it was a good fit for their heating needs. I have the bragging rights to pairing the Liberator with a thermal mass bench before they did. It works very nicely btw.
At last count I had around 30 Liberator videos on my Uncle Mud channel. Somewhere around here you can even find an early video of the tour I did of the shed where they produced their first UL listed Rocket Heater (https://youtu.be/lEOYX_lCcfU). This factory the Liberator folks are rebuilding in central Missouri is a little piece of the work that needs doing to rebuild manufacturing in the US and keep valuable manufacturing machinery (and know-how) out of the waste stream.
The Liberator isn't perfect but 1) it works and 2) it burns pellets or wood scraps without needing electricity and 3) it is actually in production, and 4) your insurance company and your code guy will not have a problem with it. It is currently the only UL safety tested EPA approved rocket heater woodstove in the US . Those are major milestones for commercial, wide scale adoption of clean burning rocket heater technology. Mine helped me reduce my heat bill in my doublewide trailer home in Cleveland Ohio from $1000 some months for propane to less than $100 per year in hardwood flooring scraps.
Drop me a line at firstname.lastname@example.org if you are interested in how a Liberator or other Rocket Heater might work for you. And buy Local, whether its the heater or the fuel you put in it.