England and Wales: 1930-1949
none of the above
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 33% of fixed outlets
Pitched, 75 mm loft insulation
Boiler and radiators, coal
From main system
house coal (not community)
Room heaters, coal
Fully double glazed
double glazing installed before 2002
TRVs and bypass
FiT application
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Partial double glazing
double glazing installed during or after 2002
Programmer, room thermostat and TRVs