England and Wales: 1996-2002
none of the above
Cavity wall, as built, insulated (assumed)
Suspended, limited insulation (assumed)
Low energy lighting in 92% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs
Stock condition survey
Cavity wall, as built, insulated (assumed)
Suspended, limited insulation (assumed)
Low energy lighting in 92% of fixed outlets
Pitched, 200 mm loft insulation
Air source heat pump, radiators, electric, Boiler and radiators, mains gas
From main system, plus solar
electricity (not community)
Room heaters, mains gas
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass