England and Wales: before 1900
non marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 36% of fixed outlets
Pitched, 50 mm loft insulation
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, coal
Mostly double glazing
double glazing installed before 2002
Programmer, TRVs and bypass
marketed sale
Sandstone or limestone, with internal insulation
Solid, insulated
Low energy lighting in all fixed outlets
Pitched, 350 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs