England and Wales: 1983-1990
none of the above
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Room heaters, electric
Electric immersion, off-peak, plus solar
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer and appliance thermostats
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Boiler and radiators, oil
From main system, plus solar
oil (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs