England and Wales: 1967-1975
rental (social)
Cavity wall, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 40% of fixed outlets
Flat, limited insulation (assumed)
No system present: electric heaters assumed
Electric immersion, off-peak
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing installed before 2002
none of the above
Cavity wall, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 60% of fixed outlets
Flat, insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs