I have just moved house and was going to put a new condensing combi in but after looking at the existing freestsnding boiler it looks pretty new and would be a waste of good money every thing is working fine.The boiler is a "Myson Marathon,"I can not find any reference on the web not saying there is not,just I can not find it.I have been left no paperwork but guess from its condition it is about 4years.CAN ANY ONE GIVE ANY ENLIGHTENMENT ON THIS BOILER.I await a money saving reply.Thank you