England and Wales: 1950-1966
none of the above
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 67% of fixed outlets
Pitched, 250 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 and room thermostat
none of the above
System built, with external insulation
Solid, no insulation (assumed)
Low energy lighting in 45% 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 during or after 2002
Programmer and room thermostat