He recommended that if I'm looking at that level of quality that I investigate Worcester Bosch as there were more installers, efficiency is nearly equivalent.
I don't think reliability is anywhere near Vaillant though, although it's a while since I researched boilers. All the good installers seem to recommend Vaillant.
I'd look at the guarantee length, but have two properties with different valiant boilers both have had the same issues common issues with combi boilers of the diverter valve and the pressure sensor.
I don't think reliability is anywhere near Vaillant though, although it's a while since I researched boilers. All the good installers seem to recommend Vaillant.