Yes, Diana
the 'back-boiler' so-called
because it sits at the back of a hearth
is a cast iron boiler [tank] with feed and outlet pipework
that goes to an insulated storage tank
Here, in Britain we have 'smoke control'
It is, against the law, to burn wood or coal
in distinct areas...
Housing, built since a certain date, are built to specifications
that do not include a chimney flue, or even a fireplace
since your original post,
'draughtproofing and insulation' have come to the fore
as primary factors to your cold conditions
With these 'sorted and out of the way'
you could 'limit the expense'
that you will eventually have-to, extend to
Larger rooms, are notoriously HARD TO HEAT [expensive]
Perhaps,
following draught-exclusion measures
you could consider heating a smaller cosier room ... A DEN [?]
with infra red lamps/heaters... instantly perceivable warmth
so, avoiding 'more-expensive' whole house heating and insulation
Where, in-Summer...
these procedures will become redundant
and the house will be stiflingly hot
alternatively... move to a more-temperate area [?]
Anyone here in Britain, with solid fuel ranges and fireplaces
could soon find themselves with a mountain of expense
to convert to gas or elctric fueled heating systems
Rising Gas Costs...
pose a different order of problems for-users as-is
Where I live, it is illegal to burn garden waste
where, the only legitimate disposal process
is to mulch and inter it, as compost
Even Farmers have to turn-in their waste
[after harvesting]
Firework-Night 'bonfires' are, just a memory [?]
'GOING GREEN'
will soon become GOING BLUE -WITH COLD
dave