Had a Firebird Heatpac Consenser Oil Boiler installed by polish plumber who is also a neighbour of mine. He installed it very badly and did other work very badly also, and became very intimidating when I confronted him about the work, so can't ask him back. Since then the bioler (new in August 08) has gone through two burners. The first burner stopped working because there was water in the oil tank. A plumber then installed a second burner, which was apparently the older model of the burner he removed. He said there were a lot of problems with the newer model burners, and the old model was better. However, this burner had to be removed about 2 months later as there was a soot build up in the boilder and it stopped working. Apparently in the old model burner the fan wasn't strong enough to blow the soot away. All this has cost a forutne. My question is is that possible that the old model burner didn't have a strong enough fan to blow away the soot, or is there another problem with the biolder. The latest burner which is the model designed specifically for my boiler was installed by a guy who is supposed to be an 'expert' on burners, but very wary of 'experts' now too. It is currenlty working fine, and he did a computerised test on it and showed me the results which he said were correct. However, now plumber who installed the old model burner said he wants to take a look at the boiler again, as he feels the soot build up could not be due to the older model of the burner being installed in my new boiler, and there could be a problem with the flue or the 'baffles'. Any advice from any 'plumbing' experts out there, really appreciated.