England and Wales: 1930-1949
rental (social)
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 150 mm loft insulation
No system present: electric heaters assumed
Gas boiler/circulator
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing installed before 2002
rental (social)
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 89% of fixed outlets
Pitched, 200 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