John Rumm wrote:
On 11/03/2011 14:56, harry wrote:
On Mar 11, 9:10 am, wrote:
OK, this changes from time to time I guess.
I may be getting a new combi boiler , about 30kW.
Up to a 1000 quids.
What is the most reliable boiler around at the moment for that spec
? I.e. one that has the vaguest hope of lasting 10 years (I know its
ridiculous !)
Gas chap recommends Vaillant ...
Cheers,
Simon.

Don't bother with a combi. They are ****e of the devil. Put in a

You seem determined to steal dribble's crown harry.

conventional system ie with roof tanks and the HW storage tank (well
lagged). There's such a thing as too much technology. You will still
have to have a condensing boiler. It will cost you more but there
will be far less trouble and expense with repairs and spare parts.

Huh?

What is the difference between a system boiler, and a combi? Answer a
small PHE, and a diversion valve and a flow switch.

What do you need to make a system boiler usable with a cylinder?
Zoning valves of some description. So the overall difference in
*system* complexity is approaching nil.

This also means you can install a solar hot water roof panel which
you can't with a combi. Also your bath will fill quickly.

The problem with all these numpty responses of "combi = good all else
evil" and their inverse, is they ignore the real world. There are
plenty of cases where one type of system is going to be vastly
preferable to the other, and to blindly insist on only the one
"allowable" solution demonstrates either ignorance or stupidity.

I agree. It's horses for courses. A condensing combi suits my household
because there is only one bathroom and just the two of us. If we had an
en-suite and wanted to shower at the same time, a conventional storage
system would probably be a better bet.

--
Kev