England and Wales: 1930-1949
none of the above
System built, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 18% of fixed outlets
Pitched, 300+  mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs
ECO assessment
System built, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 18% of fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs