England and Wales: 1967-1975
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 30% of fixed outlets
Pitched, 100 mm loft insulation
No system present: electric heaters assumed
Electric immersion, standard tariff
To be used only when there is no heating/hot-water system
Room heaters, mains gas
Partial double glazing
double glazing installed before 2002
non marketed sale
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 92% 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 during or after 2002
Programmer, room thermostat and TRVs