England and Wales: 1983-1990
marketed sale
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 17% of fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Mostly double glazing
double glazing installed during or after 2002
Programmer, TRVs and bypass
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully triple glazed
triple glazing
Programmer, room thermostat and TRVs