In article ,
"brass monkey" writes:
Just had a greenstar 30cdi installed.
Mother is living with us (92), we're all retired so at home most of the
time.
Are these temperatures asking for a humungous bill?
Never had CH before.

Like another poster said, that depends more on the insulation
and size of your house. Perhaps you can describe size of house,
when built, and what insulation has susequently been added
(cavity wall, loft, double glazing, etc).

I don't know what health you're all in, but I would say the
daytime temperature would generally be a bit low for someone
typical of your mother's age. OTOH, if she's never lived with
central heating before, she's probably more hardened to the
cold than most people typical of her age.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]