called out to a ferolli optimax today, not working, no surprises there. But its only 7 yr old and the state of the soldering was horrendous - drips n snots everywhere, vertical flue nicely sloping and then the custard lets me know which team installed it, just a pair of bathroom fitters, no tickets so no insurance and when it broke down the first time no warranty, so customer not impressed with his cheap boiler! the 2 guys involved swear blind they dont touch gas, but Ive come in behind them before, but none of their customers want to shop them as they are such nice lads!!!!!!! So until they kill or injure someone nothing will be done!!