The mantra with modern downdraft gasifiers like the EKO, Tarm, Econoburn, etc. is that they are best operated full-out, both for the sake of efficiency and longevity. That raises the question in my mind about whether the absolute optimum way to run one of these boilers would be full-out, 24/7 for (let's say) the life of the boiler. Would a boiler run this way outlast one operated in a more typical, heat-and-cool pattern over time? If I can get 20 years out of an EKO under normal use, in other words, would my neighbor, running his full-blast all the time expect his to last as long? Or longer? Or, would the boiler that is run more aggresively simply produce more btus over its (shorter) lifetime? Presumably, it would be possible to design a system with a high enough heat load and enough storage to run a boiler run in this fashion.