On 01/04/2018 16:38, Harry Bloomfield wrote:
ARW expressed precisely :
What were you expecting the gas costs to be? A serious question, I am
not taking the ****.

I a few years ago out of curiosity - asked how inefficient the usual gas
radiant type room heaters were, compared to running the central heating.
The suggestion was, that they were very inefficient, but no actual
figures given as to just how inefficient. Heating the one room by that
means, versus heating the whole house. Someone had raised the question
before me, in their attempts to save money. I was more interested in
maybe using the heater to supplement the central heating. The heater had
never been used, apart from to check it, since it was installed.

To answer your question - I was expecting such an heater to be much more
efficient/ less costly to run than it has proven. I expected the bill to
be 1/3rd of the cost of running the* central heating. I appreciate that
a lot of the heat produced, goes straight up the flue.

IIRC the efficiency (in terms of heat going into the room rather than up
the flue) depends a lot on the type of fire - especially on whether or
not it is outset. Outset can achieve over 80 per cent. But there is
naturally still the buggeration of the cold air sucked in to feed it.

Also tricky to make such comparisons when the house takes time to cool
down after the central heating going off. Seems to me yours probably
did if the boiler failed midweek but if it's in the baronial style with
3 foot walls...

--
Robin
reply-to address is (intended to be) valid