Hi Bazzy,
If you ask 10 plumbers you will most likely get 10 different boiler models
However, I can safely say that you ant go wrong with Vaillant boilers.
An acreddited Vaillant Installer can supply 10 years of warranty that can be achieved via fitting the Vaillant proctection kit or you can buy it.
I would always go with the protection kit which is a brass magnetic filter to keep the central heating clean.
The aftercare is top notch never had any problem with Vaillant. I can highly recommend them.
The parts inside the green IQ 627 are brass and Stainless steel but not to forget at the end of its life the boiler can be recycled to 85%
The combi storage has the same brass and stainless steel parts.
Me personally I would go with baxi, biasi, ideal but that’s my personal opinion.
Vaillant
Viessman
These are the ones I would go with. Vaillant is market leader so I hope that will answer your question in regards to “ how do Vaillant stack up against ..”
Both viessman or Vaillant are great boilers. If you had the space I probably would choose the green IQ 627 with a cylinder.
The boilers I mentioned are bale to modulate which means these boiler wont use the full amount of kilo watts if they do not require. For instance in the summer you may need 4-5kw to heat the hot water that means you will Safe a lot on your gas bill.
These are very quiet running boilers. My personal heart is with Vaillant but if you ask some other engineers you may get different opinions.
If you want something good ( Vaillant or viessmann).
About the prices I cannot give you an answer as it depends on many factors.
Where you based ?
Hi Matchless Plumb!
Thanks again for the really great info & confirming Valliant have great aftercare service - that really gives peace of mind!
I presume you meant to say that you would NOT personally go with a Baxi/Ideal etc? I know this may sound bad coming from a total neophyte like me but there is something about them that puts me off!
It seems that Valliant & Viessmann are the most highly regarded so will concentrate on these two brands then - as not many have mentioned either ATAG or Intergas. Also if Valliant/Viessmann are more prevalent then it makes me question how much more expensive parts/servicing might be on an ATAG/Intergas if their network is not as big.
I am so grateful I was able to learn about this modulating issue as I had no idea about it & it certainly sounds like it is a very important feature to have!
I am based in NW London & called Valliant - they got in touch & one of their approved installers is coming round this week to assess things.
Do I have to now buy from them if I get a Valliant or can I shop around & get second opinions & compare prices as they say always get 3 quotes - I am happy to pay for a proper qualified & vetted professional but also do not want to pay over the odds! I am very weary of contacting plumbers from my local Gumtree as I have read some horror stories of shady folks using fake credentials & paperwork!
How can I, as a novice determine if any prices quoted are competitive/reasonable?
I went onto the Vallaint website but it seems there are two versions of Eco Plus models - is the 938 the best/top one may I ask? How big is the storage tank in it?
On a couple of other points - I have already bought a brand new Filter - a Fernox Omega - can I have this fitted instead of the older version Spirotech one that Valliant offer as part of their protection kit & still get the 10 years warranty?
Must I also have a Power Flush Done as well to get the full 10 year warranty? Reason I ask, is our Rads are really old as is all our pipework which is under the floorboards & we have solid flooring & I am concerned that a power flush may cause leaks or splits at weak joints at pipes under floorboards etc & that would be a nightmare to deal with. Could I instead, opt for say New Radiators throughout the house & have a chemical clean/gentle flush instead? How much would any installer charge for a power flush anyway?
You have been great so again, I really am deeply grateful & appreciative!
Many Kind Thanks!
Bazzy!