Sadly, no you can not because of the amount of water vapour
#1 - You will probably qualify for free loft insulation.
Despite what some say, it DOES make a big difference in that less heat
is required AND you do not get the same cold air plunging down from
the ceiling (particularly the hall). It does matter that the
installers do it right (I have just drilled the upstairs ceiling in 6
places and I am met by a howling gale in my mouth).
#2 - If you have chimney's do you have a working gas fire?
If so, you can heat a house off 1 radiant gas fire, many people right
through to their 90s do. It is not as cheap to run as GCH but it gives
you radiant warmth.
#3 - You may qualify for GCH or E7 Storage heaters under ?StayWarm?
Yes, they also install E7 heating which is low capital and relatively
low running cost - if you have both Loft AND Cavity Wall Insulation
(assuming you have a cavity wall).
Heat only the areas you need to.
#1 - Heat the living area to 19oC minimum, ideal is more like 21oC.
#2 - Heat the bedrooms to about 12oC minimum, ideal is about 14oC.
#3 - If you see black mould anywhere you need to a) increase heating
or b) increase ventilation (and increase heating a little).
#4 - Wear more clothing (look around now in the charity shops or Ebay
for "Fleece" sweatshirts and ideally jog pants which you can slip over
#5 - Use a high TOG duvet
#6 - If single glazed, open the window on the upstairs bedroom for
30min every morning. That will clear the water (mop up the rest) and
get fresh air into the house.
#7 - Draught excluder is cheap and effective, letterbox brush, door
floor-level brush, windows & doors.
You can get Gas Wall Heaters for about £190-250. This would be ideal
if you do not have a chimney in the living room. They are 90%
efficient, they draw in cold air from *outside* and so do not create a
howling draught through the house like a roaring gas fire with class-1
chimney, they are reliable and no CO or oxygen depletion risk. They
are great as a standalone backup solution which at 1.5-2kW output is
quite capable of heating a house (48kW in a day without drawing in
freezing cold air to do it).
Do not try to heat a house by a gas oven. If you need an oven cheaply
beware buying second hand without knowing how to check things work
(especially for gas). However do not try to heat a house by it.
A colleague lived in the box-room of his house last winter having had
to put up so much money due to the "credit crunch" for a business
which was still operating fine, just high leverage (plant hire
company, "UK & Dubai PLC stopped building"). He glued 50mm celotex to
the walls for a neat foil-coloured wallpaper effect, added felt on top
of carpet underlay as it rockets the TOG rating, the loft insulation
was ok, cost very little to heat it over the winter. Heat from a
laptop was welcome, crunching the numbers so the business is now
booming (in business you often do not have to do more than survive
your competitors, because you get their business when they fail).