This is probably not totally DIY, but has anyone got any comments on condensing boilers. My present (old fashioned) one is over 20 years old - now that was a DIY install - but is suffering from an intermittent fault and SWMBO wants her warmth. Comments on reliability would be welcome, as on the complexity of installing. How much of the kitchen & plumbing needs to be rebuilt? (for instance)
Fault is that it's tripping out. This morning I could hear localised boiling within the boiler and then it cut out. Any idea what's causing that boiling? Do I simply need to add some more corrosion inhibitor?