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Mehran, I must admit I am leaning towards the Intergas option, I really like the simpicity of design, and have discovered an outlet 10 miles from me. A couple of questions for you, In the installation manual it states If all radiators are equipped with thermostatic or radiator valves, an...

Well Gents, Thanks for all the input, certainly food for thought. Summary:- WORCESTER Awkward to work on. OK reliability Spares availability good. Spares cost maybe a little more than average. Boiler possibly overpriced VALLIANT Easy to work on OK reliability Debate on spares...

Its my understanding that a condensing boiler would require an outlet for condensate. This is usually water which is slightly acidic due to mixing with products of combustion. On combi boilers there will also be a safety valve discharge pipe. There is a safety valve on sealed system boilers...

[To be totally honest, the only advantage I see is a higher efficiency, and maybe avoiding the possibility of an unexpected gush of really hot water when opening the tap. Sorry, do you mean the higher efficiency etc of a hex or a bimanifold?

mehran Thanks, Quite like the idea of no plate heat exchanger. Had experience of these on a larger scale clogging up. Efficient but not as reliable as a tube exchanger. Had a look at the web site, certainly the design is simple and from experience simple usually equals reliability. The only...

Agile, I think I see what your getting at. Maybe some WB approved installer might be slightly biased so as 'not to bite the hand that feeds' (and to be honest who can blame them!) whereas an independant may offer more options. Fair point, however the length of warranty whether it be 3 or 5 years...

I had looked at Viessmann and now realize I dismissed them due to a schoolboy error :oops: In the installation manual the overall height quoted for mounting is 1925mm. Didn't spot this was for when installing DHW cylinder below! So it seems it will fit in the space I have. Result! Will...

True, so supposing I have a really good installer, or indeed if you were installing it yourself, which of the two mentioned would you recommend?

Had to Google *** Army :D

Hi All, I am currently researching a replacement boiler project and have narrowed my choice of boiler down to two; Valliant ecoTEC plus 831 and Worcester Greenstar 30CDi. Both seem very similar in specification and suit my requirements. I would be very interested in hearing your opinions on...