England and Wales: 1967-1975
none of the above
System built, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in 60% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Mostly double glazing
double glazing installed before 2002
Programmer and room thermostat
none of the above
System built, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in 60% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Mostly double glazing
double, known data
Programmer and room thermostat