England and Wales: 1976-1982
marketed sale
Sandstone or limestone, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 78% of fixed outlets
Pitched, insulated at rafters
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, mains gas
Some double glazing
double glazing installed before 2002
Manual charge control
marketed sale
Cavity wall, as built, partial insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 100 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Room heaters, smokeless fuel
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass