Vaillant, Worcester-Bosch, Viessmann boilers

StevieD54

Another_Level said:

Myser said:

Which company makes reliable boilers these days?

I've heard that the quality and reliability of Vaillant boilers have dropped.

Is it worth paying the extra for Viessmann?

Viessmann are ok, there all ok really. Its not just the boiler but how well its installed and the quality of the existing installation.
Historically their spares were hard to get in a hurry (depends on Uk location) and awfully expensive, Ok if you have viessmann warranty and they use their own factory trained service tech's.
There not a boiler i would let a jack of all boilers repairs/servicer touch or install. There ok thou, whisper quiet running.

AS already mentioned independent gas boiler installers are offered incentive schemes,     

Baxi are reliable 

AL,
which boiler are you saying is ‘whisper quiet’?  Viessmann?  This is important to me as the boiler is in an internal setting in our bungalow  (flue goes out through the roof space) 

StevieD54

I think I saw a comment on here somewhere by a gas engineer saying Intergas are popular with councils as they are very reliable.  What would any gas engineers on here really recommend?  (see my comments above about our rather disappointing Vaillant)

Ideal? Intergas? Baxi? All suggestions gratefully received.

Btw,
my sister has an old Glow Worm in her bungalow and she says it is excellent.

BUFF

StevieD54 said:

But........it’s performance is awful.  Take today, it’s cold, it’s 3° outside.  The boiler came on at 4pm, just over 2 hours ago and yet it’s just bumbling along at 54° ish on the display, when it’s max is set at 73°.  The radiators are hot-ish, certainly nowhere near boiling.  I’m calling for 22°, so why doesn’t it crank up into the upper 60’s at least and get the radiators boiling hot?  I’ve basically had enough of it and it’s replacement next year won’t be another Vaillant.  Looking at the Ideal Logic C30 as a possible replacement. 

Tbh, this sounds like a set up/controls issue. You should be able to adjust the flow temperature.

My 13+ year old WB Highflow is very quiet - when it was fitted (possibly the first of it's kind in Scotland as they had just changed models) the installers were amazed & said it sounded more like a dishwasher than a boiler. It has been ultra reliable too despite being neglected in terms of servicing.

royalmike

BUFF said:

StevieD54 said:

But........it’s performance is awful.  Take today, it’s cold, it’s 3° outside.  The boiler came on at 4pm, just over 2 hours ago and yet it’s just bumbling along at 54° ish on the display, when it’s max is set at 73°.  The radiators are hot-ish, certainly nowhere near boiling.  I’m calling for 22°, so why doesn’t it crank up into the upper 60’s at least and get the radiators boiling hot?  I’ve basically had enough of it and it’s replacement next year won’t be another Vaillant.  Looking at the Ideal Logic C30 as a possible replacement. 

Tbh, this sounds like a set up/controls issue. You should be able to adjust the flow temperature.

My 13+ year old WB Highflow is very quiet - when it was fitted (possibly the first of it's kind in Scotland as they had just changed models) the installers were amazed & said it sounded more like a dishwasher than a boiler. It has been ultra reliable too despite being neglected in terms of servicing.

Problem I have come across many times on Valiants most likely pump is running slow often caused by sludge in system, clean filter and new pump should probably get your boiler back up to standard.

Would not go with Ideal as they have proven unreliable and expensive to fix have over ten in my garage less than 7 years old  with leaking heat exchangers and uneconomical to repair  

ilikewatch2

I've always been a huge fan of Vaillant - I currently have a Turbomax Pro which must be over 20 years old, has never been serviced and in all that time has only needed attention once when the gas valve failed about 8 years ago.

Having said that I have 2 good friends who are central heating engineers, and if you ask them which brand of boiler they would buy both will tell you "the cheapest one with the longest warranty" - both of them are of the opinion that all boilers nowadays are designed with a limited lifespan and built in obsolescence, and so you should just count it as a bonus if any modern boiler outlives its warranty.

Bendy_House

I think there's a few actual GasSafes on here?

Is aluminium as a material for the mainX just daft, or is it now a perfectly reliable alternative to SS? Eg - different alloys or whatevs.

Were the problems that were caused by the early use of ali down to corrosion or cracking?

royalmike

Why ­choose a stainless steel boiler?

1. Corrosion & Oxidation Resistance

• Stainless steel belongs to a large family of alloys which vary to accommodate different system characteristics. In a heat exchanger application, chromium is the key component in stainless steel. Chromium gives stainless steel corrosion resistant properties, but the performance and quality often depend on its grade.  Stainless steel also has minimal reactions to contaminants in water systems and like all metals has a pH tolerance level. Oxygen entrained in fresh water makeup must be reduced to avoid O2 corrosion with any ferrous metal.  Stainless steel can also withstand corrosion from flue gas condensate with respect to its pH and air quality requirements. 

southcoastrgi

daveyjp said:

Rosa_Damascena said:

Silvertabby said:

A neighbour is an independant gas fitter, so we asked him which boiler he recommended.  He immediately said 'Vaillant'.

I'm certain there are big incentives for Gas Safe engineers to install Vaillants.

The reason my Vaiilant engineer moved from Worcester was because Vaillant didn't offer incentives for him to fit them.

Over the years he saw Worcester quality reduce, but the incentives increase and he didn't want to be part of it.

That's rubbish all the manu's give incentives including Vaillant