On Sun, 19 Aug 2012 00:27:11 +0100, wrote:

On 18 Aug,
Roger Mills wrote:


BTW, a 30-year-old boiler ain't going to modulate!

The house I rented 34 years ago had a modulating boiler. It wqs a hugh wall
mounted one, IIRC servowarm. It's only control was the modulation to keep
water temperature (approximately) constant, the pump was permanently on. I
remember little else about it.



That's sounds pretty well like what Mum has then except it's quite
small. ;-)

It's also pretty quiet in that you can only really tell it's on when
it first fires up.

And if you subtract all the attention it hasn't had over the last ~30
years from any efficiency downsides then she still might be quids in.
;-)

Cheers, T i m