On 13/04/2018 15:56, PeteFJ wrote:

"All modern combi boilers are much more efficient than my current 20
year old model Worcester combi boiler"

Depends on your definition of "much"... they will likely be somewhat
more efficient when compared with non condensing versions, but a 20 year
old boiler is still likely relatively modern with fanned flue, premix
burner, and electronic controls etc, so the jump will be nothing like as
dramatic as it would be from a cast iron high water content lump...

"All modern combi boilers are so much more reliable than my model"

Without knowing what you have that's hard to quantify.

"You'll show a saving of up to 30% or more on gas consumption with a new
combi boiler"

Unlikely I would have thought. Comparing to an old balanced flue floor
standing conventional boiler with pilot light etc, you might be able to
demonstrate 30% - but against something a bit more modern you won't.

Look up your existing model in the SEDBUK database:

https://www.ncm-pcdb.org.uk/sap/

Replace a Worcester Boiler with a new Worcester boiler and the fitting
and installation will be negligible.

Even if you DIY you would still need to add things like a condensate
drain - which depending on the location may vary from trivial to
reasonably challenging.

"Don't hesitate as the cost will go sky high soon".

Yeah right...

All statements made by people keen to sell me a new Worcester combi
boiler, and as such naturally disbelieved by me.

Would anyone care to comment?

pfj



--
Cheers,

John.

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