England and Wales: 1930-1949
none of the above
System built, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, 50 mm loft insulation
Room heaters, wood logs
Electric immersion, off-peak
wood logs
Room heaters, electric
Partial double glazing
double glazing, unknown install date
Appliance thermostats
none of the above
System built, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 400 mm loft insulation
Boiler and radiators, dual fuel (mineral and wood)
Electric immersion, standard tariff
dual fuel - mineral + wood
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs