WTF? You know you want one... An off grid "rocket mass heater" - http://www.survivalistdaily.com/off-grid-heating-rocket-mass-heaters/
Survival: Shelter, Warmth, Cooling, Clothing
Rocket Mass Heater maximum efficiency in burning and heating.
rocket per riscaldare
beautiful rocket mass heaters (rocket stoves forum at permies)
Rocket mass heater by francis jonckheere / ony one, via Flickr
For the Home of the future
what are rocket mass heaters | Rocket Mass Heater
rocket+mass+heater | Woman built a rocket mass heater to heat the floor of her yurt, and ...
Rocket mass heat
Temperate Climate Permaculture: Rocket Mass Heater - I want one or maybe more of these ... headed off grid
Rocket Mass Heaters Plans for blacksmithing | Flickriver: Photoset 'Rocket Mass Heater' by francis jonckheere / ony ...
Rocket Mass Heaters and Rocket Stoves at Wheaton Labs (with pics!)