Anyone know anything against Viessmann boilers? Specifically Vitodens
100-W.Plumber has probably just done a training course:-)
I note their 5 year warranty only works if it is installed by one of their trained operatives!
regards
Hope he passed with flying colours for setting it up - especially for weather compensation. Unless they've simplified things over the 200 series. Luckily, their technical people are very helpful even to the owner.
The expensive parts are 5 years regardless.
The latest edition of Which? magazine has a members' survey of gas condensing boiler reliability. The first figure is the percentage of people whose boiler malfunctioned over the first years after installation. The second is the percentage of people who would recommend one to someone else. The number in brackets is the number of respondees. The results are: Vaillant(426) 26 66 Worcester(927) 29 66 Alpha(64) 42 52 Baxi(250) 38 49 Glow-worm (287) 39 51 Potterton (188) 36 47 Vokera (34) 29 62 British Gas(203)36 37 Ferroli(34) 41 50 Halstead (30) 53 50 Ideal (163) 44 36 Keston (34) 76 26
Viessman not mentioned.
What struck me was how b****y awful the reliability figures are. For even the best ones a quarter failed in the first four years. Is it because these condensing things are relatively new and the manufacturers are still experimenting?
Peter Scott
Peter Scott wibbled:
Viessmann are fairly new to the domestic market so that may explain the lack of data.
I agree though - the figures seem pathetic in terms of failure rates. Although I wonder how those break down into maintanance items (eg thermocouples) and more serious faults?
Cheers
Tim
In message , Peter Scott writes
It doesn't inspire much confidence.
Presumably *faults* would include system design/installation errors rather than just defects within the boiler itself?
My wife has just been bitten by the Potterton cct. board bug. Letting agent called in a plumber who changed the board for 200ukp!
regards
I would say that most failures were caused by installation faults . Earlier ecoTEC's for e.g. 3 years old are suffering from split hoses, faulty Wilo pumps and pressure switches, however all issues have been resolved now.
The training course is free and you also get lunch.
The newer Viessmann Vitodens 100-w is said to be a great improvement compared to the earlier Vitodens 100.
However I would spend a little extra and get the Vitodens 200.
We installed a Vitodens 100 last year and we have no complaints. You would probably go for a worcester-bosch as thats what most suppliers/plumbers know. However Viessmann have been producing energy efficient boilers both Industrial and domestic in Europe for ages. The track record is good, and we have had no problem with it. Hope this helps
David coughed up some electrons that declared:
That's interesting.
Any particular reason?
Cheers
Tim
In message , Tim S writes
Yes. Why?
regards
Tim Lamb coughed up some electrons that declared:
Curiousity...
I had it on my plans to install a heat only 100 (now 100-w).
Just wondered if I'm missing something with the 200. I can't see it on the face of it though.
Cheers
Tim
Yes, the V100 is the watered down version for the UK market. The V200 and V300 are more rugged and have better/more options available.
HTH
And also the interface the 200 is different, has a lambda sensor that can automatically detect the fule given. e.g no need for lpg conversion. Also the weather comp and additional controls are more sophisticated, as to been given more options
David coughed up some electrons that declared:
Hmm - I'm intrigued by the "more rugged" bit.
I was looking at the 100 as it's a) tiny; b) simple - I only need heat on an open vented system into a heatbank. I doubt it's even going to modulate.
Weather compensation is likely to be moot as that could be better implemented at the heatbank (ie don't fully charge the whole store in summer.
Or does weather compensation allow the boiler to run more efficiently at lower outputs in modulating mode?
The 100 has a stainless steel heat exchanger (I presume many decent boilers do) - so are there any weak points left?
Cheers
Tim
Oooh I don't know much about heat stores.
Don't get me wrong the Vitodens 100-w is a very nice simple boiler.
Sophisticated? Is that another name for unfathomable? ;-)
Dave Plowman (News) coughed up some electrons that declared:
It's marketing speak for "when the warranty runs out... your arse belongs to us"
In message , Tim S writes
... Or me
Oh, my 200 looks like it would be easy enough to repair. It's programming it that's the difficult bit. I keep hoping to come across an idiot's guide. Basically, to alter anything uses multi-press keys. If only they'd fitted a serial etc port so it could be programmed via a PC.
That sounds like my sort of boiler:-)
How do they organise by-pass? Or is it not required?
My under floor system is split into 3 separate circuits each having a local thermostat. There are no radiators at present and no towel rail.
At some future date, I may decide to feed an additional radiator load in an adjoining room.
regards
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