England and Wales: before 1900
ECO assessment
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, no insulation
Boiler and radiators, smokeless fuel
From main system
smokeless coal
Room heaters, smokeless fuel
Fully double glazed
double glazing installed before 2002
TRVs and bypass
ECO assessment
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, no insulation
Boiler and radiators, smokeless fuel
From main system
smokeless coal
Room heaters, smokeless fuel
Fully double glazed
double glazing installed before 2002
TRVs and bypass