I called my building inspector the other day to ask him some questions about the gasification with heat storage that I am planning on installing and he asked if the boiler was UL approved. I am looking into either an EKO or Tarm and it appears that neither one is UL approved! Has anybody ever heard of a problem like this? I can't find anywhere in the Massachusetts building code where it says a boiler has to be UL approved. Can my inspector legally insist that the boiler be UL approved?