England and Wales: 1950-1966
marketed sale
System built, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 38% of fixed outlets
Pitched, no insulation
Room heaters, mains gas
Electric immersion, standard tariff
mains gas (not community)
Room heaters, mains gas
Fully double glazed
double glazing, unknown install date
Appliance thermostats
none of the above
System built, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in 78% of fixed outlets
Pitched, no insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing, unknown install date
TRVs and bypass