On Oct 22, 6:24*pm, "Dave Plowman (News)"
wrote:
In article
,
* *NT wrote:

Very expensive mod to zone off this one room from the rest of the house.
It would cost, but can be done quite cheaply.

Maybe at installation time, but pretty expensive afterwards. If you're
paying for labour. *

Valve, timer, stat, plus 2nd valve, timer, stat.

Portable heating would add cost too, mainly in greater fuel cost.

Capital cost are low.

sure, but total costs higher.


And a normal boiler might run at reduced efficiency when just heating
one small room.
not by much

We don't know what boiler the OP has. Older ones can be horribly
inefficient when working at a small part of capacity.

If its cast iron, I'd agree. But most of those are gone now. Maybe the
OP can look and see if the boiler heat exchanger is a cast iron lump
or pressed/bent metal.


NT