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Oct 28, 2017
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South West
Member Type
DIY or Homeowner
Hi.

Looking to replace a 13-year old 824 with a new combi as its location is being moved, so seem like a good time to also replace. The new boiler needs to be more powerful - 30kW (as against 24kW?) - as the mains supply will also be upgraded.

The old 824 has actually had its pipes shifted to the new location, so ideally looking for the most direct swap possible. Plumbers back on Tuesday, so looking for the easiest boiler swap to 30kW. Any 'Vaillant' folks on here, who can point to a current model that'll slot directly in?

Cheers.
 
Can I ask why it needs to be a direct swap if the boiler is getting moved and have you tested the mains / water boards guess as you might not get enough
From what I understand, the old boiler has been moved, but not yet recommissioned (part of a larger kitchen refit). Advice is to have it replaced as it's old, hence looking for an 'exact' swap if possible.

Is the plus 831 still made? Or, will the pro 28/30 fit easily?
 

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