Don't buy a Vaillant Central heating boiler - they're crap

[Doctor Drivel]

You are a known plantpot. ATAG make a 51kW "domestic" combi matching the performance of an unvented cylinder. You have never heard of ATAG or Intergas. Now you know...plantpot

[Doctor Drivel]

I've been researching for a new boiler (waiting for the warmer weather before purchasing/ installing) and have come to the conclusion that WB boilers look good, however, I was interested to note that even WB offer a choice of Stainless steel or Aluminium heat exchangers

- with copper heating tubes. Now with 'slightly acidic' condensate', I would've thought copper and aluminium would not be a good electro-potential combination.

[geoff]

Where are you going to find one of them then ?

[geoff]

In message , Doctor Drivel writes

Like you, eh ?

[Skipweasel]

Once again we seem to be becoming uk.get-a-little-man-in

[Nightjar]

Of course I have; we went through all this when you made the suggestion last time. As usual, you were the only person who believed what you posted.

Colin Bignell

[John Stumbles]

Oi!

[YAPH]

They have a 'kebab' shaped primary heat exchanger in the iJunior, iSystem and Ri models, and a brick-like machined lump in the CDi models, but both are aluminium - with some sort of silicon passivation to protect the metal from corrosion.

I'm not a chemist or metallurgist so I can't comment on Bosch's choice of materials but I guess if they've invested £loadsa (and their reputation) into the design of these things they've thought about that.

[The Medway Handyman]

In the latter case you will pay an awful lot to have a light fitting or switch changed - assuming you can get a registered body electrician interested in the job.

[geoff]

Oil?

He said gas ...

[rjones1950s]

[Brian Gaff]

2011 to now, one might have thought if they were this bad, they would be out of business in 6 years or so. Brian