England and Wales: 1930-1949
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 93% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, smokeless fuel
From main system, no cylinder thermostat
smokeless coal
Room heaters, smokeless fuel
Fully double glazed
double glazing installed before 2002
TRVs and bypass
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 93% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, smokeless fuel
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass