England and Wales: 1900-1929
none of the above
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, no insulation
No system present: electric heaters assumed
No system present: electric immersion assumed
To be used only when there is no heating/hot-water system
Partial double glazing
double glazing installed before 2002
none of the above
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, 250 mm loft insulation
Room heaters, smokeless fuel
No system present: electric immersion assumed
smokeless coal
Portable electric heaters (assumed)
Partial double glazing
double glazing installed before 2002
No thermostatic control of room temperature