I have owned and run a log gasification boiler for ten years. In that time I have gone through four different companies to help me maintain it and it has been one thing after another with one engineer saying one thing and another saying something different. The only thing they all had in common was that no one could solve the problems we have had running it. We even had to send the boiler back to poland to be refurbished! I signed on with the AB Energy Centre just over a year ago and they understood exactly what to do. Unlike all the other repairs and even though green energy parts etc are very expensive, it didn't cost thousands either. I reckon what their engineer recognised almost immediately has been wrong since it was first installed and everything else was a result of that fault. It runs perfectly now as I always imagined it should. What's more is that they are there to help. Finally there is someone who supports me. In this world of a myriad of green energy options, it seems reliable true experts are hard to find. Many want to sell you systems but not many have actually run them. These guys have. I cannot recommend them highly enough. They have changed my bio mass life entirely!! lol