England and Wales: 1930-1949
none of the above
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 50% of fixed outlets
Pitched, no insulation (assumed)
Boiler and radiators, coal
From main system
house coal (not community)
Portable electric heaters (assumed)
Fully double glazed
double glazing installed before 2002
TRVs and bypass
marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 89% of fixed outlets
Pitched, no insulation (assumed)
Boiler and radiators, anthracite
From main system, no cylinder thermostat
anthracite
Room heaters, anthracite
Fully double glazed
double glazing installed before 2002
TRVs and bypass