England and Wales: 1996-2002
none of the above
Timber frame, as built, insulated (assumed)
Solid, limited insulation (assumed)
Low energy lighting in 70% of fixed outlets
Roof room(s), insulated (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs
none of the above
Timber frame, as built, insulated (assumed)
Solid, limited insulation (assumed)
Low energy lighting in 70% of fixed outlets
Roof room(s), insulated (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs