the glowworm 30cxi is probably in my opinion about one of the worst of the new generation condensing combis.
They have continual problems with the siphon system of condense disposal, the seals at the back of the heat ex also fail on regular basis, as does the cartridge on the diverter valve I change on average 3 or 4 of these a week, the filling taps also jam in the closed position on a regular basis, we have started fitting the good old external filling loop to overcome this problem.
Would I have one in my house, not a chance you`d have to pay me first.
my recommendation would be the vailant ecomax,very reliable boiler.
They have continual problems with the siphon system of condense disposal, the seals at the back of the heat ex also fail on regular basis, as does the cartridge on the diverter valve I change on average 3 or 4 of these a week, the filling taps also jam in the closed position on a regular basis, we have started fitting the good old external filling loop to overcome this problem.
Would I have one in my house, not a chance you`d have to pay me first.
my recommendation would be the vailant ecomax,very reliable boiler.