Check back often as more comfort solutions are coming soon! When you are undertaking work to repair, reconstruct or change the course of a drain, you should. Still have a question? ask your own! Available in outputs kw to kw, this lightweight boiler will suit the heating and hot water... Most boilers need some type of fuel to keep them running the most common fuel types are oil and natural gas, although propane is also used on occasion these fuels can be expensive and especially.