hello everyone, new to this forum and only back to canals after about fifteen years away. Wow how things change, at the risk of offending anyone this seemingly in depth assasination or this type of heater seems on reflection to be slightly niave. i presume these things have become fashionable since last i dabbled, and i am bound to say having some experience of the automotive versions that they were designed to heat a relatively small space as the only altyernative to a cold and lonely existence in a truck or the like. these newer versions may have been updated but i think any one with a grain of nowse has to realise that they will always be a compromise as their miniature nature can only lead to being tempramental if the manufacturers instructions and recommendations arent met and adhered to, to the letter. In the real world this will rarely happen as with most things, and i would think that the lack of control over the varying and dubios quality of fuels that are fed to such heaters will be the most likely problem. You pays your money and takes your choice if its clinical warmth and ultra reliability you require it seems an anathema to look for it on a canalboat and not a new appartment somewhere. I hope this is seen as apositive contribution and not a particular criticism as i have entered this discussion at a late stage, regards and safe cruising, stuart