All modern boilers are ****te, they "all" have some issue or other, Isar/Icos pcb, Glowworm combustion seals and crap o rings, Baxi Solo igniter and door issue, Ravenheat and their like are ****te from day one, Ferroli Optimax heat Xchanger, fibre washers leak at 6 months, Gas Safe letter regarding Buderous safety issue, Keston, well no need to say anymore with their photocopied amatuer paperwork, after 40 years in this game I could go on and on, I can give you a story about lots of manufacturers being a pain regarding comeing out and fixing stuff whether it's boilers fires showers whatever, sure Ideal are not Ideal, but neither are the rest, and as far as the great God Worcester, why the fek do you have to buy a whole bloody gas valve at £200.00 plus, just to get a soddin solenoid worth about £20.00, £183.00 for 5 minutes not a spanner out and "wrong" information, customer dopey enough to pay it, all it had was a clogged DHW plate xchanger which I ended up fixeing, so yes Worcesters are affected by crap in the water.