On Fri, 17 Nov 2006 00:40:31 +0000, Owain wrote:

Ed Sirett wrote:
This week I put a 31kW Vaillant Condensing Combi in. The other month I put
in a 24kW unit. As I was doing the job, I started to think is there
_anything_ in the boiler that's different between the two units? ...
I strongly suspect the 37kW unit is also the same (the fan will just go
yet faster). I did a 28kW unit about 12 month ago and that ran to the mid
400s on HW.

Then ask yourself how long a 28kW unit will last when running at 37kW?

In principle as long as a 37kW unit would.



Part of me is truly impressed with the design which makes a whole range of
models from the same production line. Part of me is wondering by
what mechanism can a the huge price differentials be maintained ( £815
versus £1009) for essentially a firmware difference.

The only way to bring a sense of competition into the matter would be
simply to buy other makes when needing higher powered units, but they of
course apply the same marketing strategy, although possibly not to such an
extent.



--
Ed Sirett - Property maintainer and registered gas fitter.
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