1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Replacement for Vaillant Ecotec Plus 937?

Discussion in 'Plumbing and Central Heating' started by dunder101, 2 Sep 2021.

  1. dunder101

    dunder101

    Joined:
    1 May 2006
    Messages:
    15
    Thanks Received:
    1
    Location:
    Kent
    Country:
    United Kingdom
    Hello all. We have a Vaillant Ecotec Plus 937 combination boiler in our house. It was here when we moved in five years ago and is coming up for ten years old. Since we moved in, we've had it repaired four times for various things, including a dip tube replacement, replacement diverter valve, replacement DHW heat exchanger and - last winter - a replacement PCB. Most of these repairs have been via Vaillant's fixed price repair and, whilst we've always got our money's worth out of this service, we've now spent around £1000 on repairs + the costs of having it serviced most years.

    Whilst it's working fine at the moment we won't be spending any more money on repairs so, next time it breaks down, we will replace it. But, when this happens, I want to be ready to go online and confidently order the right sort of replacement installation - which is where I'd appreciate advice ...

    We have a four bedroom house over three floors wih ten radiators and two bathrooms - one with a bath and shower over, the second with a shower only. There's just myself, my wife and our son. The Ecotec Plus 937 has hot water storage tanks built-in and supposedly offers hot water at some 19 litres per minutes. But given we have no particular need for running both showers or bath + shower at the same time, I am not sure we need the expense or complexity of this sort of boiler in a replacement. The likes of heatable and iheat recommend regular combi boilers, with no in-built tanks, around 30kw with around 14 litres per minute hot water. Would this sort of boiler be okay for us?

    Thanks in advance.
     
  2. Sponsored Links
  3. muggles

    muggles

    Joined:
    28 Oct 2005
    Messages:
    13,242
    Thanks Received:
    3,038
    Location:
    Daventry
    Country:
    United Kingdom
    What's your incoming mains flow rate? Normally you'd select a combi to maximise the use of the available incoming mains, but also ensure that it can modulate low enough to be efficient when running the central heating.
     
  4. Mottie

    Mottie

    Joined:
    27 Feb 2017
    Messages:
    18,302
    Thanks Received:
    1,858
    Location:
    Essexshire
    Country:
    United Kingdom
    Whatever you get, if you are having it serviced, you should get something with a 7 or even 10 year guarantee.
     
  5. dunder101

    dunder101

    Joined:
    1 May 2006
    Messages:
    15
    Thanks Received:
    1
    Location:
    Kent
    Country:
    United Kingdom
    Thanks for this - I have checked and we're getting about 12 litres per minute from the mains and, having checked the commissioning record for the current Vaillant boiler, it states 11 litres per minute. So I'm guessing this 20 litre per minute flow rate on the current boiler is meaningless, and spending extra on a new boiler that delivers much higher than 12 litres per minute would be a waste of money.
     
  6. dunder101

    dunder101

    Joined:
    1 May 2006
    Messages:
    15
    Thanks Received:
    1
    Location:
    Kent
    Country:
    United Kingdom
    Definately! Thank you.
     
  7. muggles

    muggles

    Joined:
    28 Oct 2005
    Messages:
    13,242
    Thanks Received:
    3,038
    Location:
    Daventry
    Country:
    United Kingdom
    Exactly. If you want something that's the polar opposite in terms of complexity to what you have now, look at the Intergas Xclusive 30. Only 4 moving parts, no diverter valve or plate heat exchanger, 12 year warranty when fitted with the Intergas system filter. Put a decent OpenTherm based control on it and you'll enjoy great heating efficency too
     
  8. Sponsored Links
Loading...

Share This Page