I say not very hard. At least no more difficult than a conventional wood-fired boiler, which I also used for many years. I think people read about some of the problems people have getting their gasification boilers set up and running correctly, and assume that they're somehow more difficult than some of the alternatives (OWBs, indoor boilers, furnaces and wood stoves). I don't think so. But let's hear what you have to say. I realize that there are different brands, designs and ranges of interest and technical expertise (not to mention dumb luck). Let's ignore all that for the moment and just vote. You can qualify or embellish your vote with a post if you like.