England and Wales: 1967-1975
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 67% of fixed outlets
Pitched, 300+ mm loft insulation
Warm air, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, mains gas
Mostly secondary glazing
secondary glazing
Programmer and room thermostat
none of the above
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 83% of fixed outlets
Pitched, 300 mm loft insulation
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