England and Wales: 1976-1982
marketed sale
Cavity wall, as built, partial insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, 100 mm loft insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, coal
Mostly double glazing
double glazing installed before 2002
Automatic charge control
marketed sale
Cavity wall, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in 50% of fixed outlets
Pitched, 300 mm loft insulation
Boiler and radiators, LPG
From main system
LPG (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs