Who makes the best and most reliable boilers ? The reason for asking is that I presently have a Ferroli that's constantly breaking down. On average every three months. The latest problem relates to a seal going around the burner allowing the flame to get into the casing. This has also warped the heat exchanger and caused other damage. The parts are not readily available so I'm sat here in the cold writing this message. I've now reached the point whereby I need to change what is a 5 year old boiler. Are all these modern boilers the same ? Are they made to constantly breakdown ? I would be grateful for your recomendations.