England and Wales: 1996-2002
marketed sale
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 29% of fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, mains gas
Mostly double glazing
double glazing installed before 2002
Programmer, TRVs and bypass
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, limited insulation (assumed)
Low energy lighting in 30% of fixed outlets
Pitched, 150 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs