England and Wales: 1976-1982
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in 15% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, LPG
From main system, no cylinder thermostat
LPG (not community)
Room heaters, LPG
Mostly double glazing
double glazing installed before 2002
Programmer, TRVs and bypass
ECO assessment
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, insulated
Boiler and radiators, LPG
From main system, no cylinder thermostat
LPG (not community)
Room heaters, LPG
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass